diff options
Diffstat (limited to 'src/tdfx_texstate.c')
| -rw-r--r-- | src/tdfx_texstate.c | 2212 |
1 files changed, 2212 insertions, 0 deletions
diff --git a/src/tdfx_texstate.c b/src/tdfx_texstate.c new file mode 100644 index 0000000..fda9ce5 --- /dev/null +++ b/src/tdfx_texstate.c @@ -0,0 +1,2212 @@ +/* -*- mode: c; c-basic-offset: 3 -*- + * + * Copyright 2000 VA Linux Systems Inc., Fremont, California. + * + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF + * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +/* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_texstate.c,v 1.2 2002/02/22 21:45:04 dawes Exp $ */ + +/* + * New fixes: + * Daniel Borca <dborca@users.sourceforge.net>, 19 Jul 2004 + * + * Original rewrite: + * Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000 + * + * Authors: + * Gareth Hughes <gareth@valinux.com> + * Brian Paul <brianp@valinux.com> + * + */ + +#include "tdfx_state.h" +#include "tdfx_tex.h" +#include "tdfx_texman.h" +#include "tdfx_texstate.h" + + +/* ============================================================= + * Texture + */ + +/* + * These macros are used below when handling COMBINE_EXT. + */ +#define TEXENV_OPERAND_INVERTED(operand) \ + (((operand) == GL_ONE_MINUS_SRC_ALPHA) \ + || ((operand) == GL_ONE_MINUS_SRC_COLOR)) +#define TEXENV_OPERAND_ALPHA(operand) \ + (((operand) == GL_SRC_ALPHA) || ((operand) == GL_ONE_MINUS_SRC_ALPHA)) +#define TEXENV_SETUP_ARG_A(param, source, operand, iteratedAlpha) \ + switch (source) { \ + case GL_TEXTURE: \ + param = GR_CMBX_LOCAL_TEXTURE_ALPHA; \ + break; \ + case GL_CONSTANT_EXT: \ + param = GR_CMBX_TMU_CALPHA; \ + break; \ + case GL_PRIMARY_COLOR_EXT: \ + param = GR_CMBX_ITALPHA; \ + break; \ + case GL_PREVIOUS_EXT: \ + param = iteratedAlpha; \ + break; \ + default: \ + /* \ + * This is here just to keep from getting \ + * compiler warnings. \ + */ \ + param = GR_CMBX_ZERO; \ + break; \ + } + +#define TEXENV_SETUP_ARG_RGB(param, source, operand, iteratedColor, iteratedAlpha) \ + if (!TEXENV_OPERAND_ALPHA(operand)) { \ + switch (source) { \ + case GL_TEXTURE: \ + param = GR_CMBX_LOCAL_TEXTURE_RGB; \ + break; \ + case GL_CONSTANT_EXT: \ + param = GR_CMBX_TMU_CCOLOR; \ + break; \ + case GL_PRIMARY_COLOR_EXT: \ + param = GR_CMBX_ITRGB; \ + break; \ + case GL_PREVIOUS_EXT: \ + param = iteratedColor; \ + break; \ + default: \ + /* \ + * This is here just to keep from getting \ + * compiler warnings. \ + */ \ + param = GR_CMBX_ZERO; \ + break; \ + } \ + } else { \ + switch (source) { \ + case GL_TEXTURE: \ + param = GR_CMBX_LOCAL_TEXTURE_ALPHA; \ + break; \ + case GL_CONSTANT_EXT: \ + param = GR_CMBX_TMU_CALPHA; \ + break; \ + case GL_PRIMARY_COLOR_EXT: \ + param = GR_CMBX_ITALPHA; \ + break; \ + case GL_PREVIOUS_EXT: \ + param = iteratedAlpha; \ + break; \ + default: \ + /* \ + * This is here just to keep from getting \ + * compiler warnings. \ + */ \ + param = GR_CMBX_ZERO; \ + break; \ + } \ + } + +#define TEXENV_SETUP_MODE_RGB(param, operand) \ + switch (operand) { \ + case GL_SRC_COLOR: \ + case GL_SRC_ALPHA: \ + param = GR_FUNC_MODE_X; \ + break; \ + case GL_ONE_MINUS_SRC_ALPHA: \ + case GL_ONE_MINUS_SRC_COLOR: \ + param = GR_FUNC_MODE_ONE_MINUS_X; \ + break; \ + default: \ + param = GR_FUNC_MODE_ZERO; \ + break; \ + } + +#define TEXENV_SETUP_MODE_A(param, operand) \ + switch (operand) { \ + case GL_SRC_ALPHA: \ + param = GR_FUNC_MODE_X; \ + break; \ + case GL_ONE_MINUS_SRC_ALPHA: \ + param = GR_FUNC_MODE_ONE_MINUS_X; \ + break; \ + default: \ + param = GR_FUNC_MODE_ZERO; \ + break; \ + } + + + +/* + * Setup a texture environment on Voodoo5. + * Return GL_TRUE for success, GL_FALSE for failure. + * If we fail, we'll have to use software rendering. + */ +static GLboolean +SetupTexEnvNapalm(GLcontext *ctx, GLboolean useIteratedRGBA, + const struct gl_texture_unit *texUnit, GLenum baseFormat, + struct tdfx_texcombine_ext *env) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + GrTCCUColor_t incomingRGB, incomingAlpha; + const GLenum envMode = texUnit->EnvMode; + + if (useIteratedRGBA) { + incomingRGB = GR_CMBX_ITRGB; + incomingAlpha = GR_CMBX_ITALPHA; + } + else { + incomingRGB = GR_CMBX_OTHER_TEXTURE_RGB; + incomingAlpha = GR_CMBX_OTHER_TEXTURE_ALPHA; + } + + /* invariant: */ + env->Color.Shift = 0; + env->Color.Invert = FXFALSE; + env->Alpha.Shift = 0; + env->Alpha.Invert = FXFALSE; + + switch (envMode) { + case GL_REPLACE: + /* -- Setup RGB combiner */ + if (baseFormat == GL_ALPHA) { + /* Rv = Rf */ + env->Color.SourceA = incomingRGB; + } + else { + /* Rv = Rt */ + env->Color.SourceA = GR_CMBX_LOCAL_TEXTURE_RGB; + } + env->Color.ModeA = GR_FUNC_MODE_X; + env->Color.SourceB = GR_CMBX_ZERO; + env->Color.ModeB = GR_FUNC_MODE_ZERO; + env->Color.SourceC = GR_CMBX_ZERO; + env->Color.InvertC = FXTRUE; + env->Color.SourceD = GR_CMBX_ZERO; + env->Color.InvertD = FXFALSE; + /* -- Setup Alpha combiner */ + if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* Av = Af */ + env->Alpha.SourceD = incomingAlpha; + } + else { + /* Av = At */ + env->Alpha.SourceD = GR_CMBX_LOCAL_TEXTURE_ALPHA; + } + env->Alpha.SourceA = GR_CMBX_ITALPHA; + env->Alpha.ModeA = GR_FUNC_MODE_ZERO; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXFALSE; + env->Alpha.InvertD = FXFALSE; + break; + + case GL_MODULATE: + /* -- Setup RGB combiner */ + if (baseFormat == GL_ALPHA) { + /* Rv = Rf */ + env->Color.SourceC = GR_CMBX_ZERO; + env->Color.InvertC = FXTRUE; + } + else { + /* Result = Frag * Tex */ + env->Color.SourceC = GR_CMBX_LOCAL_TEXTURE_RGB; + env->Color.InvertC = FXFALSE; + } + env->Color.SourceA = incomingRGB; + env->Color.ModeA = GR_FUNC_MODE_X; + env->Color.SourceB = GR_CMBX_ZERO; + env->Color.ModeB = GR_FUNC_MODE_ZERO; + env->Color.SourceD = GR_CMBX_ZERO; + env->Color.InvertD = FXFALSE; + /* -- Setup Alpha combiner */ + if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* Av = Af */ + env->Alpha.SourceA = incomingAlpha; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXTRUE; + } + else { + /* Av = Af * At */ + env->Alpha.SourceA = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Alpha.SourceC = incomingAlpha; + env->Alpha.InvertC = FXFALSE; + } + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceD = GR_CMBX_ZERO; + env->Alpha.InvertD = FXFALSE; + break; + + case GL_DECAL: + /* -- Setup RGB combiner */ + if (baseFormat == GL_RGB) { + /* Rv = Rt */ + env->Color.SourceB = GR_CMBX_ZERO; + env->Color.ModeB = GR_FUNC_MODE_X; + env->Color.SourceC = GR_CMBX_ZERO; + env->Color.InvertC = FXTRUE; + env->Color.SourceD = GR_CMBX_ZERO; + env->Color.InvertD = FXFALSE; + } + else { + /* Rv = Rf * (1 - At) + Rt * At */ + env->Color.SourceB = incomingRGB; + env->Color.ModeB = GR_FUNC_MODE_NEGATIVE_X; + env->Color.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Color.InvertC = FXFALSE; + env->Color.SourceD = GR_CMBX_B; + env->Color.InvertD = FXFALSE; + } + env->Color.SourceA = GR_CMBX_LOCAL_TEXTURE_RGB; + env->Color.ModeA = GR_FUNC_MODE_X; + /* -- Setup Alpha combiner */ + /* Av = Af */ + env->Alpha.SourceA = incomingAlpha; + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXTRUE; + env->Alpha.SourceD = GR_CMBX_ZERO; + env->Alpha.InvertD = FXFALSE; + break; + + case GL_BLEND: + /* -- Setup RGB combiner */ + if (baseFormat == GL_ALPHA) { + /* Rv = Rf */ + env->Color.SourceA = incomingRGB; + env->Color.ModeA = GR_FUNC_MODE_X; + env->Color.SourceB = GR_CMBX_ZERO; + env->Color.ModeB = GR_FUNC_MODE_ZERO; + env->Color.SourceC = GR_CMBX_ZERO; + env->Color.InvertC = FXTRUE; + env->Color.SourceD = GR_CMBX_ZERO; + env->Color.InvertD = FXFALSE; + } + else { + /* Rv = Rf * (1 - Rt) + Rc * Rt */ + env->Color.SourceA = GR_CMBX_TMU_CCOLOR; + env->Color.ModeA = GR_FUNC_MODE_X; + env->Color.SourceB = incomingRGB; + env->Color.ModeB = GR_FUNC_MODE_NEGATIVE_X; + env->Color.SourceC = GR_CMBX_LOCAL_TEXTURE_RGB; + env->Color.InvertC = FXFALSE; + env->Color.SourceD = GR_CMBX_B; + env->Color.InvertD = FXFALSE; + } + /* -- Setup Alpha combiner */ + if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* Av = Af */ + env->Alpha.SourceA = incomingAlpha; + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceB = GR_CMBX_ZERO; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXTRUE; + env->Alpha.SourceD = GR_CMBX_ZERO; + env->Alpha.InvertD = FXFALSE; + } + else if (baseFormat == GL_INTENSITY) { + /* Av = Af * (1 - It) + Ac * It */ + env->Alpha.SourceA = GR_CMBX_TMU_CALPHA; + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceB = incomingAlpha; + env->Alpha.ModeB = GR_FUNC_MODE_NEGATIVE_X; + env->Alpha.SourceC = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Alpha.InvertC = FXFALSE; + env->Alpha.SourceD = GR_CMBX_B; + env->Alpha.InvertD = FXFALSE; + } + else { + /* Av = Af * At */ + env->Alpha.SourceA = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = incomingAlpha; + env->Alpha.InvertC = FXFALSE; + env->Alpha.SourceD = GR_CMBX_ZERO; + env->Alpha.InvertD = FXFALSE; + } + /* Also have to set up the tex env constant color */ + env->EnvColor = PACK_RGBA32(texUnit->EnvColor[0] * 255.0F, + texUnit->EnvColor[1] * 255.0F, + texUnit->EnvColor[2] * 255.0F, + texUnit->EnvColor[3] * 255.0F); + break; + case GL_ADD: + /* -- Setup RGB combiner */ + if (baseFormat == GL_ALPHA) { + /* Rv = Rf */ + env->Color.SourceB = GR_CMBX_ZERO; + env->Color.ModeB = GR_FUNC_MODE_ZERO; + } + else { + /* Rv = Rf + Tt */ + env->Color.SourceB = GR_CMBX_LOCAL_TEXTURE_RGB; + env->Color.ModeB = GR_FUNC_MODE_X; + } + env->Color.SourceA = incomingRGB; + env->Color.ModeA = GR_FUNC_MODE_X; + env->Color.SourceC = GR_CMBX_ZERO; + env->Color.InvertC = FXTRUE; + env->Color.SourceD = GR_CMBX_ZERO; + env->Color.InvertD = FXFALSE; + /* -- Setup Alpha combiner */ + if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* Av = Af */ + env->Alpha.SourceA = incomingAlpha; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXTRUE; + + } + else if (baseFormat == GL_INTENSITY) { + /* Av = Af + It */ + env->Alpha.SourceA = incomingAlpha; + env->Alpha.SourceB = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_X; + env->Alpha.SourceC = GR_CMBX_ZERO; + env->Alpha.InvertC = FXTRUE; + } + else { + /* Av = Af * At */ + env->Alpha.SourceA = GR_CMBX_LOCAL_TEXTURE_ALPHA; + env->Alpha.SourceB = GR_CMBX_ITALPHA; + env->Alpha.ModeB = GR_FUNC_MODE_ZERO; + env->Alpha.SourceC = incomingAlpha; + env->Alpha.InvertC = FXFALSE; + } + env->Alpha.ModeA = GR_FUNC_MODE_X; + env->Alpha.SourceD = GR_CMBX_ZERO; + env->Alpha.InvertD = FXFALSE; + break; + + case GL_COMBINE_EXT: + { + FxU32 A_RGB, B_RGB, C_RGB, D_RGB; + FxU32 Amode_RGB, Bmode_RGB; + FxBool Cinv_RGB, Dinv_RGB, Ginv_RGB; + FxU32 Shift_RGB; + FxU32 A_A, B_A, C_A, D_A; + FxU32 Amode_A, Bmode_A; + FxBool Cinv_A, Dinv_A, Ginv_A; + FxU32 Shift_A; + + /* + * + * In the formulas below, we write: + * o "1(x)" for the identity function applied to x, + * so 1(x) = x. + * o "0(x)" for the constant function 0, so + * 0(x) = 0 for all values of x. + * + * Calculate the color combination. + */ + Shift_RGB = texUnit->Combine.ScaleShiftRGB; + Shift_A = texUnit->Combine.ScaleShiftA; + switch (texUnit->Combine.ModeRGB) { + case GL_REPLACE: + /* + * The formula is: Arg0 + * We implement this by the formula: + * (Arg0 + 0(0))*(1-0) + 0 + */ + TEXENV_SETUP_ARG_RGB(A_RGB, + texUnit->Combine.SourceRGB[0], + texUnit->Combine.OperandRGB[0], + incomingRGB, incomingAlpha); + TEXENV_SETUP_MODE_RGB(Amode_RGB, + texUnit->Combine.OperandRGB[0]); + B_RGB = C_RGB = D_RGB = GR_CMBX_ZERO; + Bmode_RGB = GR_FUNC_MODE_ZERO; + Cinv_RGB = FXTRUE; + Dinv_RGB = Ginv_RGB = FXFALSE; + break; + case GL_MODULATE: + /* + * The formula is: Arg0 * Arg1 + * + * We implement this by the formula + * (Arg0 + 0(0)) * Arg1 + 0(0) + */ + TEXENV_SETUP_ARG_RGB(A_RGB, + texUnit->Combine.SourceRGB[0], + texUnit->Combine.OperandRGB[0], + incomingRGB, incomingAlpha); + TEXENV_SETUP_MODE_RGB(Amode_RGB, + texUnit->Combine.OperandRGB[0]); + B_RGB = GR_CMBX_ZERO; + Bmode_RGB = GR_CMBX_ZERO; + TEXENV_SETUP_ARG_RGB(C_RGB, + texUnit->Combine.SourceRGB[1], + texUnit->Combine.OperandRGB[1], + incomingRGB, incomingAlpha); + Cinv_RGB = TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandRGB[1]); + D_RGB = GR_CMBX_ZERO; + Dinv_RGB = Ginv_RGB = FXFALSE; + break; + case GL_ADD: + /* + * The formula is Arg0 + Arg1 + */ + TEXENV_SETUP_ARG_RGB(A_RGB, + texUnit->Combine.SourceRGB[0], + texUnit->Combine.OperandRGB[0], + incomingRGB, incomingAlpha); + TEXENV_SETUP_MODE_RGB(Amode_RGB, + texUnit->Combine.OperandRGB[0]); + TEXENV_SETUP_ARG_RGB(B_RGB, + texUnit->Combine.SourceRGB[1], + texUnit->Combine.OperandRGB[1], + incomingRGB, incomingAlpha); + TEXENV_SETUP_MODE_RGB(Bmode_RGB, + texUnit->Combine.OperandRGB[1]); + C_RGB = D_RGB = GR_CMBX_ZERO; + Cinv_RGB = FXTRUE; + Dinv_RGB = Ginv_RGB = FXFALSE; + break; + case GL_ADD_SIGNED_EXT: + /* + * The formula is: Arg0 + Arg1 - 0.5. + * We compute this by calculating: + * (Arg0 - 1/2) + Arg1 if op0 is SRC_{COLOR,ALPHA} + * Arg0 + (Arg1 - 1/2) if op1 is SRC_{COLOR,ALPHA} + * If both op0 and op1 are ONE_MINUS_SRC_{COLOR,ALPHA} + * we cannot implement the formula properly. + */ + TEXENV_SETUP_ARG_RGB(A_RGB, + texUnit->Combine.SourceRGB[0], + texUnit->Combine.OperandRGB[0], + incomingRGB, incomingAlpha); + TEXENV_SETUP_ARG_RGB(B_RGB, + texUnit->Combine.SourceRGB[1], + texUnit->Combine.OperandRGB[1], + incomingRGB, incomingAlpha); + if (!TEXENV_OPERAND_INVERTED(texUnit->Combine.OperandRGB[0])) { + /* + * A is not inverted. So, choose it. + */ + Amode_RGB = GR_FUNC_MODE_X_MINUS_HALF; + if (!TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandRGB[1])) { + Bmode_RGB = GR_FUNC_MODE_X; + } + else { + Bmode_RGB = GR_FUNC_MODE_ONE_MINUS_X; + } + } + else { + /* + * A is inverted, so try to subtract 1/2 + * from B. + */ + Amode_RGB = GR_FUNC_MODE_ONE_MINUS_X; + if (!TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandRGB[1])) { + Bmode_RGB = GR_FUNC_MODE_X_MINUS_HALF; + } + else { + /* + * Both are inverted. This is the case + * we cannot handle properly. We just + * choose to not add the - 1/2. + */ + Bmode_RGB = GR_FUNC_MODE_ONE_MINUS_X; + return GL_FALSE; + } + } + C_RGB = D_RGB = GR_CMBX_ZERO; + Cinv_RGB = FXTRUE; + Dinv_RGB = Ginv_RGB = FXFALSE; + break; + case GL_INTERPOLATE_EXT: + /* + * The formula is: Arg0 * Arg2 + Arg1 * (1 - Arg2). + * We compute this by the formula: + * (Arg0 - Arg1) * Arg2 + Arg1 + * == Arg0 * Arg2 - Arg1 * Arg2 + Arg1 + * == Arg0 * Arg2 + Arg1 * (1 - Arg2) + * However, if both Arg1 is ONE_MINUS_X, the HW does + * not support it properly. + */ + TEXENV_SETUP_ARG_RGB(A_RGB, + texUnit->Combine.SourceRGB[0], + texUnit->Combine.OperandRGB[0], + incomingRGB, incomingAlpha); + TEXENV_SETUP_MODE_RGB(Amode_RGB, + texUnit->Combine.OperandRGB[0]); + TEXENV_SETUP_ARG_RGB(B_RGB, + texUnit->Combine.SourceRGB[1], + texUnit->Combine.OperandRGB[1], + incomingRGB, incomingAlpha); + if (TEXENV_OPERAND_INVERTED(texUnit->Combine.OperandRGB[1])) { + /* + * This case is wrong. + */ + Bmode_RGB = GR_FUNC_MODE_NEGATIVE_X; + return GL_FALSE; + } + else { + Bmode_RGB = GR_FUNC_MODE_NEGATIVE_X; + } + /* + * The Source/Operand for the C value must + * specify some kind of alpha value. + */ + TEXENV_SETUP_ARG_A(C_RGB, + texUnit->Combine.SourceRGB[2], + texUnit->Combine.OperandRGB[2], + incomingAlpha); + Cinv_RGB = FXFALSE; + D_RGB = GR_CMBX_B; + Dinv_RGB = Ginv_RGB = FXFALSE; + break; + default: + /* + * This is here mostly to keep from getting + * a compiler warning about these not being set. + * However, this should set all the texture values + * to zero. + */ + A_RGB = B_RGB = C_RGB = D_RGB = GR_CMBX_ZERO; + Amode_RGB = Bmode_RGB = GR_FUNC_MODE_X; + Cinv_RGB = Dinv_RGB = Ginv_RGB = FXFALSE; + break; + } + /* + * Calculate the alpha combination. + */ + switch (texUnit->Combine.ModeA) { + case GL_REPLACE: + /* + * The formula is: Arg0 + * We implement this by the formula: + * (Arg0 + 0(0))*(1-0) + 0 + */ + TEXENV_SETUP_ARG_A(A_A, + texUnit->Combine.SourceA[0], + texUnit->Combine.OperandA[0], + incomingAlpha); + TEXENV_SETUP_MODE_A(Amode_A, + texUnit->Combine.OperandA[0]); + B_A = GR_CMBX_ITALPHA; + Bmode_A = GR_FUNC_MODE_ZERO; + C_A = D_A = GR_CMBX_ZERO; + Cinv_A = FXTRUE; + Dinv_A = Ginv_A = FXFALSE; + break; + case GL_MODULATE: + /* + * The formula is: Arg0 * Arg1 + * + * We implement this by the formula + * (Arg0 + 0(0)) * Arg1 + 0(0) + */ + TEXENV_SETUP_ARG_A(A_A, + texUnit->Combine.SourceA[0], + texUnit->Combine.OperandA[0], + incomingAlpha); + TEXENV_SETUP_MODE_A(Amode_A, + texUnit->Combine.OperandA[0]); + B_A = GR_CMBX_ZERO; + Bmode_A = GR_CMBX_ZERO; + TEXENV_SETUP_ARG_A(C_A, + texUnit->Combine.SourceA[1], + texUnit->Combine.OperandA[1], + incomingAlpha); + Cinv_A = TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandA[1]); + D_A = GR_CMBX_ZERO; + Dinv_A = Ginv_A = FXFALSE; + break; + case GL_ADD: + /* + * The formula is Arg0 + Arg1 + */ + TEXENV_SETUP_ARG_A(A_A, + texUnit->Combine.SourceA[0], + texUnit->Combine.OperandA[0], + incomingAlpha); + TEXENV_SETUP_MODE_A(Amode_A, + texUnit->Combine.OperandA[0]); + TEXENV_SETUP_ARG_A(B_A, + texUnit->Combine.SourceA[1], + texUnit->Combine.OperandA[1], + incomingAlpha); + TEXENV_SETUP_MODE_A(Bmode_A, + texUnit->Combine.OperandA[1]); + C_A = D_A = GR_CMBX_ZERO; + Cinv_A = FXTRUE; + Dinv_A = Ginv_A = FXFALSE; + break; + case GL_ADD_SIGNED_EXT: + /* + * The formula is: Arg0 + Arg1 - 0.5. + * We compute this by calculating: + * (Arg0 - 1/2) + Arg1 if op0 is SRC_{COLOR,ALPHA} + * Arg0 + (Arg1 - 1/2) if op1 is SRC_{COLOR,ALPHA} + * If both op0 and op1 are ONE_MINUS_SRC_{COLOR,ALPHA} + * we cannot implement the formula properly. + */ + TEXENV_SETUP_ARG_A(A_A, + texUnit->Combine.SourceA[0], + texUnit->Combine.OperandA[0], + incomingAlpha); + TEXENV_SETUP_ARG_A(B_A, + texUnit->Combine.SourceA[1], + texUnit->Combine.OperandA[1], + incomingAlpha); + if (!TEXENV_OPERAND_INVERTED(texUnit->Combine.OperandA[0])) { + /* + * A is not inverted. So, choose it. + */ + Amode_A = GR_FUNC_MODE_X_MINUS_HALF; + if (!TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandA[1])) { + Bmode_A = GR_FUNC_MODE_X; + } else { + Bmode_A = GR_FUNC_MODE_ONE_MINUS_X; + } + } else { + /* + * A is inverted, so try to subtract 1/2 + * from B. + */ + Amode_A = GR_FUNC_MODE_ONE_MINUS_X; + if (!TEXENV_OPERAND_INVERTED + (texUnit->Combine.OperandA[1])) { + Bmode_A = GR_FUNC_MODE_X_MINUS_HALF; + } else { + /* + * Both are inverted. This is the case + * we cannot handle properly. We just + * choose to not add the - 1/2. + */ + Bmode_A = GR_FUNC_MODE_ONE_MINUS_X; + return GL_FALSE; + } + } + C_A = D_A = GR_CMBX_ZERO; + Cinv_A = FXTRUE; + Dinv_A = Ginv_A = FXFALSE; + break; + case GL_INTERPOLATE_EXT: + /* + * The formula is: Arg0 * Arg2 + Arg1 * (1 - Arg2). + * We compute this by the formula: + * (Arg0 - Arg1) * Arg2 + Arg1 + * == Arg0 * Arg2 - Arg1 * Arg2 + Arg1 + * == Arg0 * Arg2 + Arg1 * (1 - Arg2) + * However, if both Arg1 is ONE_MINUS_X, the HW does + * not support it properly. + */ + TEXENV_SETUP_ARG_A(A_A, + texUnit->Combine.SourceA[0], + texUnit->Combine.OperandA[0], + incomingAlpha); + TEXENV_SETUP_MODE_A(Amode_A, + texUnit->Combine.OperandA[0]); + TEXENV_SETUP_ARG_A(B_A, + texUnit->Combine.SourceA[1], + texUnit->Combine.OperandA[1], + incomingAlpha); + if (!TEXENV_OPERAND_INVERTED(texUnit->Combine.OperandA[1])) { + Bmode_A = GR_FUNC_MODE_NEGATIVE_X; + } + else { + /* + * This case is wrong. + */ + Bmode_A = GR_FUNC_MODE_NEGATIVE_X; + return GL_FALSE; + } + /* + * The Source/Operand for the C value must + * specify some kind of alpha value. + */ + TEXENV_SETUP_ARG_A(C_A, + texUnit->Combine.SourceA[2], + texUnit->Combine.OperandA[2], + incomingAlpha); + Cinv_A = FXFALSE; + D_A = GR_CMBX_B; + Dinv_A = Ginv_A = FXFALSE; + break; + default: + /* + * This is here mostly to keep from getting + * a compiler warning about these not being set. + * However, this should set all the alpha values + * to one. + */ + A_A = B_A = C_A = D_A = GR_CMBX_ZERO; + Amode_A = Bmode_A = GR_FUNC_MODE_X; + Cinv_A = Dinv_A = FXFALSE; + Ginv_A = FXTRUE; + break; + } + /* + * Save the parameters. + */ + env->Color.SourceA = A_RGB; + env->Color.ModeA = Amode_RGB; + env->Color.SourceB = B_RGB; + env->Color.ModeB = Bmode_RGB; + env->Color.SourceC = C_RGB; + env->Color.InvertC = Cinv_RGB; + env->Color.SourceD = D_RGB; + env->Color.InvertD = Dinv_RGB; + env->Color.Shift = Shift_RGB; + env->Color.Invert = Ginv_RGB; + env->Alpha.SourceA = A_A; + env->Alpha.ModeA = Amode_A; + env->Alpha.SourceB = B_A; + env->Alpha.ModeB = Bmode_A; + env->Alpha.SourceC = C_A; + env->Alpha.InvertC = Cinv_A; + env->Alpha.SourceD = D_A; + env->Alpha.InvertD = Dinv_A; + env->Alpha.Shift = Shift_A; + env->Alpha.Invert = Ginv_A; + env->EnvColor = PACK_RGBA32(texUnit->EnvColor[0] * 255.0F, + texUnit->EnvColor[1] * 255.0F, + texUnit->EnvColor[2] * 255.0F, + texUnit->EnvColor[3] * 255.0F); + } + break; + + default: + _mesa_problem(ctx, "%s: Bad envMode", __FUNCTION__); + } + + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_ENV; + + fxMesa->ColorCombineExt.SourceA = GR_CMBX_TEXTURE_RGB; + fxMesa->ColorCombineExt.ModeA = GR_FUNC_MODE_X, + fxMesa->ColorCombineExt.SourceB = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.ModeB = GR_FUNC_MODE_X; + fxMesa->ColorCombineExt.SourceC = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.InvertC = FXTRUE; + fxMesa->ColorCombineExt.SourceD = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.InvertD = FXFALSE; + fxMesa->ColorCombineExt.Shift = 0; + fxMesa->ColorCombineExt.Invert = FXFALSE; + fxMesa->dirty |= TDFX_UPLOAD_COLOR_COMBINE; + fxMesa->AlphaCombineExt.SourceA = GR_CMBX_TEXTURE_ALPHA; + fxMesa->AlphaCombineExt.ModeA = GR_FUNC_MODE_X; + fxMesa->AlphaCombineExt.SourceB = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.ModeB = GR_FUNC_MODE_X; + fxMesa->AlphaCombineExt.SourceC = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.InvertC = FXTRUE; + fxMesa->AlphaCombineExt.SourceD = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.InvertD = FXFALSE; + fxMesa->AlphaCombineExt.Shift = 0; + fxMesa->AlphaCombineExt.Invert = FXFALSE; + fxMesa->dirty |= TDFX_UPLOAD_ALPHA_COMBINE; + return GL_TRUE; /* success */ +} + + + +/* + * Setup the Voodoo3 texture environment for a single texture unit. + * Return GL_TRUE for success, GL_FALSE for failure. + * If failure, we'll use software rendering. + */ +static GLboolean +SetupSingleTexEnvVoodoo3(GLcontext *ctx, int unit, + GLenum envMode, GLenum baseFormat) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + GrCombineLocal_t localc, locala; + struct tdfx_combine alphaComb, colorComb; + + if (1 /*iteratedRGBA*/) + localc = locala = GR_COMBINE_LOCAL_ITERATED; + else + localc = locala = GR_COMBINE_LOCAL_CONSTANT; + + switch (envMode) { + case GL_DECAL: + alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL; + alphaComb.Factor = GR_COMBINE_FACTOR_NONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_NONE; + alphaComb.Invert = FXFALSE; + colorComb.Function = GR_COMBINE_FUNCTION_BLEND; + colorComb.Factor = GR_COMBINE_FACTOR_TEXTURE_ALPHA; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_TEXTURE; + colorComb.Invert = FXFALSE; + break; + case GL_MODULATE: + alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + alphaComb.Factor = GR_COMBINE_FACTOR_LOCAL; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_TEXTURE; + alphaComb.Invert = FXFALSE; + if (baseFormat == GL_ALPHA) { + colorComb.Function = GR_COMBINE_FUNCTION_LOCAL; + colorComb.Factor = GR_COMBINE_FACTOR_NONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_NONE; + colorComb.Invert = FXFALSE; + } + else { + colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + colorComb.Factor = GR_COMBINE_FACTOR_LOCAL; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_TEXTURE; + colorComb.Invert = FXFALSE; + } + break; + + case GL_BLEND: + /* + * XXX we can't do real GL_BLEND mode. These settings assume that + * the TexEnv color is black and incoming fragment color is white. + */ + if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* Av = Af */ + alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL; + alphaComb.Factor = GR_COMBINE_FACTOR_NONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_NONE; + alphaComb.Invert = FXFALSE; + } + else if (baseFormat == GL_INTENSITY) { + /* Av = Af * (1 - It) + Ac * It */ + alphaComb.Function = GR_COMBINE_FUNCTION_BLEND; + alphaComb.Factor = GR_COMBINE_FACTOR_TEXTURE_ALPHA; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_CONSTANT; + alphaComb.Invert = FXFALSE; + } + else { + /* Av = Af * At */ + alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + alphaComb.Factor = GR_COMBINE_FACTOR_LOCAL; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_TEXTURE; + alphaComb.Invert = FXFALSE; + } + if (baseFormat == GL_ALPHA) { + colorComb.Function = GR_COMBINE_FUNCTION_LOCAL; + colorComb.Factor = GR_COMBINE_FACTOR_NONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_NONE; + colorComb.Invert = FXFALSE; + } + else { + colorComb.Function = GR_COMBINE_FUNCTION_BLEND; + colorComb.Factor = GR_COMBINE_FACTOR_TEXTURE_RGB; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_CONSTANT; + colorComb.Invert = FXTRUE; + } + fxMesa->Color.MonoColor = PACK_RGBA32( + ctx->Texture.Unit[unit].EnvColor[0] * 255.0f, + ctx->Texture.Unit[unit].EnvColor[1] * 255.0f, + ctx->Texture.Unit[unit].EnvColor[2] * 255.0f, + ctx->Texture.Unit[unit].EnvColor[3] * 255.0f); + fxMesa->dirty |= TDFX_UPLOAD_CONSTANT_COLOR; + break; + + case GL_REPLACE: + if ((baseFormat == GL_RGB) || (baseFormat == GL_LUMINANCE)) { + alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL; + alphaComb.Factor = GR_COMBINE_FACTOR_NONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_NONE; + alphaComb.Invert = FXFALSE; + } + else { + alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + alphaComb.Factor = GR_COMBINE_FACTOR_ONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_TEXTURE; + alphaComb.Invert = FXFALSE; + } + if (baseFormat == GL_ALPHA) { + colorComb.Function = GR_COMBINE_FUNCTION_LOCAL; + colorComb.Factor = GR_COMBINE_FACTOR_NONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_NONE; + colorComb.Invert = FXFALSE; + } + else { + colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + colorComb.Factor = GR_COMBINE_FACTOR_ONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_TEXTURE; + colorComb.Invert = FXFALSE; + } + break; + + case GL_ADD: + if (baseFormat == GL_ALPHA || + baseFormat == GL_LUMINANCE_ALPHA || + baseFormat == GL_RGBA) { + /* product of texel and fragment alpha */ + alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + alphaComb.Factor = GR_COMBINE_FACTOR_LOCAL; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_TEXTURE; + alphaComb.Invert = FXFALSE; + } + else if (baseFormat == GL_LUMINANCE || baseFormat == GL_RGB) { + /* fragment alpha is unchanged */ + alphaComb.Function = GR_COMBINE_FUNCTION_LOCAL; + alphaComb.Factor = GR_COMBINE_FACTOR_NONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_NONE; + alphaComb.Invert = FXFALSE; + } + else { + ASSERT(baseFormat == GL_INTENSITY); + /* sum of texel and fragment alpha */ + alphaComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL, + alphaComb.Factor = GR_COMBINE_FACTOR_ONE; + alphaComb.Local = locala; + alphaComb.Other = GR_COMBINE_OTHER_TEXTURE; + alphaComb.Invert = FXFALSE; + } + if (baseFormat == GL_ALPHA) { + /* rgb unchanged */ + colorComb.Function = GR_COMBINE_FUNCTION_LOCAL; + colorComb.Factor = GR_COMBINE_FACTOR_NONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_NONE; + colorComb.Invert = FXFALSE; + } + else { + /* sum of texel and fragment rgb */ + colorComb.Function = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL, + colorComb.Factor = GR_COMBINE_FACTOR_ONE; + colorComb.Local = localc; + colorComb.Other = GR_COMBINE_OTHER_TEXTURE; + colorComb.Invert = FXFALSE; + } + break; + + default: { + (void) memcpy(&colorComb, &fxMesa->ColorCombine, sizeof(colorComb)); + (void) memcpy(&alphaComb, &fxMesa->AlphaCombine, sizeof(alphaComb)); + _mesa_problem(ctx, "bad texture env mode in %s", __FUNCTION__); + } + } + + if (colorComb.Function != fxMesa->ColorCombine.Function || + colorComb.Factor != fxMesa->ColorCombine.Factor || + colorComb.Local != fxMesa->ColorCombine.Local || + colorComb.Other != fxMesa->ColorCombine.Other || + colorComb.Invert != fxMesa->ColorCombine.Invert) { + fxMesa->ColorCombine = colorComb; + fxMesa->dirty |= TDFX_UPLOAD_COLOR_COMBINE; + } + + if (alphaComb.Function != fxMesa->AlphaCombine.Function || + alphaComb.Factor != fxMesa->AlphaCombine.Factor || + alphaComb.Local != fxMesa->AlphaCombine.Local || + alphaComb.Other != fxMesa->AlphaCombine.Other || + alphaComb.Invert != fxMesa->AlphaCombine.Invert) { + fxMesa->AlphaCombine = alphaComb; + fxMesa->dirty |= TDFX_UPLOAD_ALPHA_COMBINE; + } + return GL_TRUE; +} + + +/* + * Setup the Voodoo3 texture environment for dual texture units. + * Return GL_TRUE for success, GL_FALSE for failure. + * If failure, we'll use software rendering. + */ +static GLboolean +SetupDoubleTexEnvVoodoo3(GLcontext *ctx, int tmu0, + GLenum envMode0, GLenum baseFormat0, + GLenum envMode1, GLenum baseFormat1) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + const GrCombineLocal_t locala = GR_COMBINE_LOCAL_ITERATED; + const GrCombineLocal_t localc = GR_COMBINE_LOCAL_ITERATED; + const int tmu1 = 1 - tmu0; + + if (envMode0 == GL_MODULATE && envMode1 == GL_MODULATE) { + GLboolean isalpha[TDFX_NUM_TMU]; + + isalpha[tmu0] = (baseFormat0 == GL_ALPHA); + isalpha[tmu1] = (baseFormat1 == GL_ALPHA); + + if (isalpha[TDFX_TMU1]) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXTRUE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + if (isalpha[TDFX_TMU0]) { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_LOCAL; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_LOCAL; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + else if (envMode0 == GL_REPLACE && envMode1 == GL_BLEND) { /* Quake */ + if (tmu0 == TDFX_TMU1) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXTRUE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE_MINUS_LOCAL; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE_MINUS_LOCAL; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + else if (envMode0 == GL_REPLACE && envMode1 == GL_MODULATE) { + /* Quake 2/3 */ + if (tmu1 == TDFX_TMU1) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXTRUE; + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_LOCAL; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND_OTHER; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + if (baseFormat0 == GL_RGB) { + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + else { + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + } + else if (envMode0 == GL_MODULATE && envMode1 == GL_ADD) { + /* Quake 3 sky */ + GLboolean isalpha[TDFX_NUM_TMU]; + + isalpha[tmu0] = (baseFormat0 == GL_ALPHA); + isalpha[tmu1] = (baseFormat1 == GL_ALPHA); + + if (isalpha[TDFX_TMU1]) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXTRUE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + if (isalpha[TDFX_TMU0]) { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + else { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_LOCAL; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_LOCAL; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + else if (envMode0 == GL_REPLACE && envMode1 == GL_ADD) { + /* Vulpine sky */ + GLboolean isalpha[TDFX_NUM_TMU]; + + isalpha[tmu0] = (baseFormat0 == GL_ALPHA); + isalpha[tmu1] = (baseFormat1 == GL_ALPHA); + + if (isalpha[TDFX_TMU1]) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXTRUE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + + if (isalpha[TDFX_TMU0]) { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } else { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_SCALE_OTHER_ADD_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + } + + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + else if (envMode1 == GL_REPLACE) { + /* Homeworld2 */ + + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + + if ((baseFormat0 == GL_RGB) && (baseFormat0 == GL_LUMINANCE)) { + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } else { + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->AlphaCombine.Local = locala; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + if (baseFormat0 == GL_ALPHA) { + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->ColorCombine.Invert = FXFALSE; + } else { + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_SCALE_OTHER; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_ONE; + fxMesa->ColorCombine.Local = localc; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_TEXTURE; + fxMesa->ColorCombine.Invert = FXFALSE; + } + } + else { + _mesa_problem(ctx, "%s: Unexpected dual texture mode encountered", __FUNCTION__); + return GL_FALSE; + } + + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_ENV; + fxMesa->dirty |= TDFX_UPLOAD_COLOR_COMBINE; + fxMesa->dirty |= TDFX_UPLOAD_ALPHA_COMBINE; + return GL_TRUE; +} + + +/* + * This function makes sure that the correct mipmap levels are loaded + * in the right places in memory and then makes the Glide calls to + * setup the texture source pointers. + */ +static void +setupSingleTMU(tdfxContextPtr fxMesa, struct gl_texture_object *tObj) +{ + struct tdfxSharedState *shared = (struct tdfxSharedState *) fxMesa->glCtx->Shared->DriverData; + tdfxTexInfo *ti = TDFX_TEXTURE_DATA(tObj); + const GLcontext *ctx = fxMesa->glCtx; + + /* Make sure we're not loaded incorrectly */ + if (ti->isInTM && !shared->umaTexMemory) { + /* if doing filtering between mipmap levels, alternate mipmap levels + * must be in alternate TMUs. + */ + if (ti->LODblend) { + if (ti->whichTMU != TDFX_TMU_SPLIT) + tdfxTMMoveOutTM_NoLock(fxMesa, tObj); + } + else { + if (ti->whichTMU == TDFX_TMU_SPLIT) + tdfxTMMoveOutTM_NoLock(fxMesa, tObj); + } + } + + /* Make sure we're loaded correctly */ + if (!ti->isInTM) { + /* Have to download the texture */ + if (shared->umaTexMemory) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj, TDFX_TMU0); + } + else { + /* Voodoo3 (split texture memory) */ + if (ti->LODblend) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj, TDFX_TMU_SPLIT); + } + else { +#if 0 + /* XXX putting textures into the second memory bank when the + * first bank is full is not working at this time. + */ + if (fxMesa->haveTwoTMUs) { + GLint memReq = fxMesa->Glide.grTexTextureMemRequired( + GR_MIPMAPLEVELMASK_BOTH, &(ti->info)); + if (shared->freeTexMem[TDFX_TMU0] > memReq) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj, TDFX_TMU0); + } + else { + tdfxTMMoveInTM_NoLock(fxMesa, tObj, TDFX_TMU1); + } + } + else +#endif + { + tdfxTMMoveInTM_NoLock(fxMesa, tObj, TDFX_TMU0); + } + } + } + } + + if (ti->LODblend && ti->whichTMU == TDFX_TMU_SPLIT) { + /* mipmap levels split between texture banks */ + GLint u; + + if (ti->info.format == GR_TEXFMT_P_8 && !ctx->Texture.SharedPalette) { + fxMesa->TexPalette.Type = ti->paltype; + fxMesa->TexPalette.Data = &(ti->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + + for (u = 0; u < 2; u++) { + fxMesa->TexParams[u].sClamp = ti->sClamp; + fxMesa->TexParams[u].tClamp = ti->tClamp; + fxMesa->TexParams[u].minFilt = ti->minFilt; + fxMesa->TexParams[u].magFilt = ti->magFilt; + fxMesa->TexParams[u].mmMode = ti->mmMode; + fxMesa->TexParams[u].LODblend = ti->LODblend; + fxMesa->TexParams[u].LodBias = ctx->Texture.Unit[u].LodBias; + } + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PARAMS; + + fxMesa->TexSource[0].StartAddress = ti->tm[TDFX_TMU0]->startAddr; + fxMesa->TexSource[0].EvenOdd = GR_MIPMAPLEVELMASK_ODD; + fxMesa->TexSource[0].Info = &(ti->info); + fxMesa->TexSource[1].StartAddress = ti->tm[TDFX_TMU1]->startAddr; + fxMesa->TexSource[1].EvenOdd = GR_MIPMAPLEVELMASK_EVEN; + fxMesa->TexSource[1].Info = &(ti->info); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_SOURCE; + } + else { + FxU32 tmu; + + if (ti->whichTMU == TDFX_TMU_BOTH) + tmu = TDFX_TMU0; + else + tmu = ti->whichTMU; + + if (shared->umaTexMemory) { + assert(ti->whichTMU == TDFX_TMU0); + assert(tmu == TDFX_TMU0); + } + + if (ti->info.format == GR_TEXFMT_P_8 && !ctx->Texture.SharedPalette) { + fxMesa->TexPalette.Type = ti->paltype; + fxMesa->TexPalette.Data = &(ti->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + + /* KW: The alternative is to do the download to the other tmu. If + * we get to this point, I think it means we are thrashing the + * texture memory, so perhaps it's not a good idea. + */ + + if (fxMesa->TexParams[tmu].sClamp != ti->sClamp || + fxMesa->TexParams[tmu].tClamp != ti->tClamp || + fxMesa->TexParams[tmu].minFilt != ti->minFilt || + fxMesa->TexParams[tmu].magFilt != ti->magFilt || + fxMesa->TexParams[tmu].mmMode != ti->mmMode || + fxMesa->TexParams[tmu].LODblend != FXFALSE || + fxMesa->TexParams[tmu].LodBias != ctx->Texture.Unit[tmu].LodBias) { + fxMesa->TexParams[tmu].sClamp = ti->sClamp; + fxMesa->TexParams[tmu].tClamp = ti->tClamp; + fxMesa->TexParams[tmu].minFilt = ti->minFilt; + fxMesa->TexParams[tmu].magFilt = ti->magFilt; + fxMesa->TexParams[tmu].mmMode = ti->mmMode; + fxMesa->TexParams[tmu].LODblend = FXFALSE; + fxMesa->TexParams[tmu].LodBias = ctx->Texture.Unit[tmu].LodBias; + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PARAMS; + } + + /* Glide texture source info */ + fxMesa->TexSource[0].Info = NULL; + fxMesa->TexSource[1].Info = NULL; + if (ti->tm[tmu]) { + fxMesa->TexSource[tmu].StartAddress = ti->tm[tmu]->startAddr; + fxMesa->TexSource[tmu].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu].Info = &(ti->info); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_SOURCE; + } + } + + fxMesa->sScale0 = ti->sScale; + fxMesa->tScale0 = ti->tScale; +} + +static void +selectSingleTMUSrc(tdfxContextPtr fxMesa, GLint tmu, FxBool LODblend) +{ + if (LODblend) { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE_MINUS_LOD_FRACTION; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE_MINUS_LOD_FRACTION; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + + if (fxMesa->haveTwoTMUs) { + const struct gl_shared_state *mesaShared = fxMesa->glCtx->Shared; + const struct tdfxSharedState *shared = (struct tdfxSharedState *) mesaShared->DriverData; + int tmu; + + if (shared->umaTexMemory) + tmu = GR_TMU0; + else + tmu = GR_TMU1; + + fxMesa->TexCombine[tmu].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[tmu].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[tmu].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[tmu].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[tmu].InvertRGB = FXFALSE; + fxMesa->TexCombine[tmu].InvertAlpha = FXFALSE; + } + fxMesa->tmuSrc = TDFX_TMU_SPLIT; + } + else { + if (tmu != TDFX_TMU1) { + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + if (fxMesa->haveTwoTMUs) { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_ZERO; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + } + fxMesa->tmuSrc = TDFX_TMU0; + } + else { + fxMesa->TexCombine[1].FunctionRGB = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorRGB = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].FunctionAlpha = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->TexCombine[1].FactorAlpha = GR_COMBINE_FACTOR_NONE; + fxMesa->TexCombine[1].InvertRGB = FXFALSE; + fxMesa->TexCombine[1].InvertAlpha = FXFALSE; + /* GR_COMBINE_FUNCTION_SCALE_OTHER doesn't work ?!? */ + fxMesa->TexCombine[0].FunctionRGB = GR_COMBINE_FUNCTION_BLEND; + fxMesa->TexCombine[0].FactorRGB = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].FunctionAlpha = GR_COMBINE_FUNCTION_BLEND; + fxMesa->TexCombine[0].FactorAlpha = GR_COMBINE_FACTOR_ONE; + fxMesa->TexCombine[0].InvertRGB = FXFALSE; + fxMesa->TexCombine[0].InvertAlpha = FXFALSE; + fxMesa->tmuSrc = TDFX_TMU1; + } + } + + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_ENV; +} + +#if 0 +static void print_state(tdfxContextPtr fxMesa) +{ + GLcontext *ctx = fxMesa->glCtx; + struct gl_texture_object *tObj0 = ctx->Texture.Unit[0]._Current; + struct gl_texture_object *tObj1 = ctx->Texture.Unit[1]._Current; + GLenum base0 = tObj0->Image[0][tObj0->BaseLevel] ? tObj0->Image[0][tObj0->BaseLevel]->Format : 99; + GLenum base1 = tObj1->Image[0][tObj1->BaseLevel] ? tObj1->Image[0][tObj1->BaseLevel]->Format : 99; + + printf("Unit 0: Enabled: GL=%d Gr=%d\n", ctx->Texture.Unit[0]._ReallyEnabled, + fxMesa->TexState.Enabled[0]); + printf(" EnvMode: GL=0x%x Gr=0x%x\n", ctx->Texture.Unit[0].EnvMode, + fxMesa->TexState.EnvMode[0]); + printf(" BaseFmt: GL=0x%x Gr=0x%x\n", base0, fxMesa->TexState.TexFormat[0]); + + + printf("Unit 1: Enabled: GL=%d Gr=%d\n", ctx->Texture.Unit[1]._ReallyEnabled, + fxMesa->TexState.Enabled[1]); + printf(" EnvMode: GL=0x%x Gr:0x%x\n", ctx->Texture.Unit[1].EnvMode, + fxMesa->TexState.EnvMode[1]); + printf(" BaseFmt: GL=0x%x Gr:0x%x\n", base1, fxMesa->TexState.TexFormat[1]); +} +#endif + +/* + * When we're only using a single texture unit, we always use the 0th + * Glide/hardware unit, regardless if it's GL_TEXTURE0_ARB or GL_TEXTURE1_ARB + * that's enalbed. + * Input: ctx - the context + * unit - the OpenGL texture unit to use. + */ +static void setupTextureSingleTMU(GLcontext * ctx, GLuint unit) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + tdfxTexInfo *ti; + struct gl_texture_object *tObj; + int tmu; + GLenum envMode, baseFormat; + + tObj = ctx->Texture.Unit[unit]._Current; + if (tObj->Image[0][tObj->BaseLevel]->Border > 0) { + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_BORDER, GL_TRUE); + return; + } + + setupSingleTMU(fxMesa, tObj); + + ti = TDFX_TEXTURE_DATA(tObj); + if (ti->whichTMU == TDFX_TMU_BOTH) + tmu = TDFX_TMU0; + else + tmu = ti->whichTMU; + + if (fxMesa->tmuSrc != tmu) { + selectSingleTMUSrc(fxMesa, tmu, ti->LODblend); + } + + if (ti->reloadImages) + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_IMAGES; + + /* Check if we really need to update the texenv state */ + envMode = ctx->Texture.Unit[unit].EnvMode; + baseFormat = tObj->Image[0][tObj->BaseLevel]->_BaseFormat; + + if (TDFX_IS_NAPALM(fxMesa)) { + /* see if we really need to update the unit */ + if (1/*fxMesa->TexState.Enabled[unit] != ctx->Texture.Unit[unit]._ReallyEnabled || + envMode != fxMesa->TexState.EnvMode[0] || + envMode == GL_COMBINE_EXT || + baseFormat != fxMesa->TexState.TexFormat[0]*/) { + struct tdfx_texcombine_ext *otherEnv; + if (!SetupTexEnvNapalm(ctx, GL_TRUE, + &ctx->Texture.Unit[unit], baseFormat, + &fxMesa->TexCombineExt[0])) { + /* software fallback */ + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_TRUE); + } + /* disable other unit */ + otherEnv = &fxMesa->TexCombineExt[1]; + otherEnv->Color.SourceA = GR_CMBX_ZERO; + otherEnv->Color.ModeA = GR_FUNC_MODE_ZERO; + otherEnv->Color.SourceB = GR_CMBX_ZERO; + otherEnv->Color.ModeB = GR_FUNC_MODE_ZERO; + otherEnv->Color.SourceC = GR_CMBX_ZERO; + otherEnv->Color.InvertC = FXFALSE; + otherEnv->Color.SourceD = GR_CMBX_ZERO; + otherEnv->Color.InvertD = FXFALSE; + otherEnv->Color.Shift = 0; + otherEnv->Color.Invert = FXFALSE; + otherEnv->Alpha.SourceA = GR_CMBX_ITALPHA; + otherEnv->Alpha.ModeA = GR_FUNC_MODE_ZERO; + otherEnv->Alpha.SourceB = GR_CMBX_ITALPHA; + otherEnv->Alpha.ModeB = GR_FUNC_MODE_ZERO; + otherEnv->Alpha.SourceC = GR_CMBX_ZERO; + otherEnv->Alpha.InvertC = FXFALSE; + otherEnv->Alpha.SourceD = GR_CMBX_ZERO; + otherEnv->Alpha.InvertD = FXFALSE; + otherEnv->Alpha.Shift = 0; + otherEnv->Alpha.Invert = FXFALSE; + +#if 0/*JJJ*/ + fxMesa->TexState.Enabled[unit] = ctx->Texture.Unit[unit]._ReallyEnabled; + fxMesa->TexState.EnvMode[0] = envMode; + fxMesa->TexState.TexFormat[0] = baseFormat; + fxMesa->TexState.EnvMode[1] = 0; + fxMesa->TexState.TexFormat[1] = 0; +#endif + } + } + else { + /* Voodoo3 */ + + /* see if we really need to update the unit */ + if (1/*fxMesa->TexState.Enabled[unit] != ctx->Texture.Unit[unit]._ReallyEnabled || + envMode != fxMesa->TexState.EnvMode[0] || + envMode == GL_COMBINE_EXT || + baseFormat != fxMesa->TexState.TexFormat[0]*/) { + if (!SetupSingleTexEnvVoodoo3(ctx, unit, envMode, baseFormat)) { + /* software fallback */ + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_TRUE); + } +#if 0/*JJJ*/ + fxMesa->TexState.Enabled[unit] = ctx->Texture.Unit[unit]._ReallyEnabled; + fxMesa->TexState.EnvMode[0] = envMode; + fxMesa->TexState.TexFormat[0] = baseFormat; + fxMesa->TexState.EnvMode[1] = 0; + fxMesa->TexState.TexFormat[1] = 0; +#endif + } + } +} + + +static void +setupDoubleTMU(tdfxContextPtr fxMesa, + struct gl_texture_object *tObj0, + struct gl_texture_object *tObj1) +{ +#define T0_NOT_IN_TMU 0x01 +#define T1_NOT_IN_TMU 0x02 +#define T0_IN_TMU0 0x04 +#define T1_IN_TMU0 0x08 +#define T0_IN_TMU1 0x10 +#define T1_IN_TMU1 0x20 + + const struct gl_shared_state *mesaShared = fxMesa->glCtx->Shared; + const struct tdfxSharedState *shared = (struct tdfxSharedState *) mesaShared->DriverData; + const GLcontext *ctx = fxMesa->glCtx; + tdfxTexInfo *ti0 = TDFX_TEXTURE_DATA(tObj0); + tdfxTexInfo *ti1 = TDFX_TEXTURE_DATA(tObj1); + GLuint tstate = 0; + int tmu0 = 0, tmu1 = 1; + + if (shared->umaTexMemory) { + if (!ti0->isInTM) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj0, TDFX_TMU0); + assert(ti0->isInTM); + } + if (!ti1->isInTM) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj1, TDFX_TMU0); + assert(ti1->isInTM); + } + } + else { + /* We shouldn't need to do this. There is something wrong with + multitexturing when the TMUs are swapped. So, we're forcing + them to always be loaded correctly. !!! */ + if (ti0->whichTMU == TDFX_TMU1) + tdfxTMMoveOutTM_NoLock(fxMesa, tObj0); + if (ti1->whichTMU == TDFX_TMU0) + tdfxTMMoveOutTM_NoLock(fxMesa, tObj1); + + if (ti0->isInTM) { + switch (ti0->whichTMU) { + case TDFX_TMU0: + tstate |= T0_IN_TMU0; + break; + case TDFX_TMU1: + tstate |= T0_IN_TMU1; + break; + case TDFX_TMU_BOTH: + tstate |= T0_IN_TMU0 | T0_IN_TMU1; + break; + case TDFX_TMU_SPLIT: + tstate |= T0_NOT_IN_TMU; + break; + } + } + else + tstate |= T0_NOT_IN_TMU; + + if (ti1->isInTM) { + switch (ti1->whichTMU) { + case TDFX_TMU0: + tstate |= T1_IN_TMU0; + break; + case TDFX_TMU1: + tstate |= T1_IN_TMU1; + break; + case TDFX_TMU_BOTH: + tstate |= T1_IN_TMU0 | T1_IN_TMU1; + break; + case TDFX_TMU_SPLIT: + tstate |= T1_NOT_IN_TMU; + break; + } + } + else + tstate |= T1_NOT_IN_TMU; + + /* Move texture maps into TMUs */ + + if (!(((tstate & T0_IN_TMU0) && (tstate & T1_IN_TMU1)) || + ((tstate & T0_IN_TMU1) && (tstate & T1_IN_TMU0)))) { + if (tObj0 == tObj1) { + tdfxTMMoveInTM_NoLock(fxMesa, tObj1, TDFX_TMU_BOTH); + } + else { + /* Find the minimal way to correct the situation */ + if ((tstate & T0_IN_TMU0) || (tstate & T1_IN_TMU1)) { + /* We have one in the standard order, setup the other */ + if (tstate & T0_IN_TMU0) { + /* T0 is in TMU0, put T1 in TMU1 */ + tdfxTMMoveInTM_NoLock(fxMesa, tObj1, TDFX_TMU1); + } + else { + tdfxTMMoveInTM_NoLock(fxMesa, tObj0, TDFX_TMU0); + } + /* tmu0 and tmu1 are setup */ + } + else if ((tstate & T0_IN_TMU1) || (tstate & T1_IN_TMU0)) { + /* we have one in the reverse order, setup the other */ + if (tstate & T1_IN_TMU0) { + /* T1 is in TMU0, put T0 in TMU1 */ + tdfxTMMoveInTM_NoLock(fxMesa, tObj0, TDFX_TMU1); + } + else { + tdfxTMMoveInTM_NoLock(fxMesa, tObj1, TDFX_TMU0); + } + tmu0 = 1; + tmu1 = 0; + } + else { /* Nothing is loaded */ + tdfxTMMoveInTM_NoLock(fxMesa, tObj0, TDFX_TMU0); + tdfxTMMoveInTM_NoLock(fxMesa, tObj1, TDFX_TMU1); + /* tmu0 and tmu1 are setup */ + } + } + } + } + + ti0->lastTimeUsed = fxMesa->texBindNumber; + ti1->lastTimeUsed = fxMesa->texBindNumber; + + + if (!ctx->Texture.SharedPalette) { + if (ti0->info.format == GR_TEXFMT_P_8) { + fxMesa->TexPalette.Type = ti0->paltype; + fxMesa->TexPalette.Data = &(ti0->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + else if (ti1->info.format == GR_TEXFMT_P_8) { + fxMesa->TexPalette.Type = ti1->paltype; + fxMesa->TexPalette.Data = &(ti1->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + else { + fxMesa->TexPalette.Data = NULL; + } + } + + /* + * Setup Unit 0 + */ + assert(ti0->isInTM); + assert(ti0->tm[tmu0]); + fxMesa->TexSource[tmu0].StartAddress = ti0->tm[tmu0]->startAddr; + fxMesa->TexSource[tmu0].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu0].Info = &(ti0->info); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_SOURCE; + + if (fxMesa->TexParams[tmu0].sClamp != ti0->sClamp || + fxMesa->TexParams[tmu0].tClamp != ti0->tClamp || + fxMesa->TexParams[tmu0].minFilt != ti0->minFilt || + fxMesa->TexParams[tmu0].magFilt != ti0->magFilt || + fxMesa->TexParams[tmu0].mmMode != ti0->mmMode || + fxMesa->TexParams[tmu0].LODblend != FXFALSE || + fxMesa->TexParams[tmu0].LodBias != ctx->Texture.Unit[tmu0].LodBias) { + fxMesa->TexParams[tmu0].sClamp = ti0->sClamp; + fxMesa->TexParams[tmu0].tClamp = ti0->tClamp; + fxMesa->TexParams[tmu0].minFilt = ti0->minFilt; + fxMesa->TexParams[tmu0].magFilt = ti0->magFilt; + fxMesa->TexParams[tmu0].mmMode = ti0->mmMode; + fxMesa->TexParams[tmu0].LODblend = FXFALSE; + fxMesa->TexParams[tmu0].LodBias = ctx->Texture.Unit[tmu0].LodBias; + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PARAMS; + } + + /* + * Setup Unit 1 + */ + if (shared->umaTexMemory) { + ASSERT(ti1->isInTM); + ASSERT(ti1->tm[0]); + fxMesa->TexSource[tmu1].StartAddress = ti1->tm[0]->startAddr; + fxMesa->TexSource[tmu1].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu1].Info = &(ti1->info); + } + else { + ASSERT(ti1->isInTM); + ASSERT(ti1->tm[tmu1]); + fxMesa->TexSource[tmu1].StartAddress = ti1->tm[tmu1]->startAddr; + fxMesa->TexSource[tmu1].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu1].Info = &(ti1->info); + } + + if (fxMesa->TexParams[tmu1].sClamp != ti1->sClamp || + fxMesa->TexParams[tmu1].tClamp != ti1->tClamp || + fxMesa->TexParams[tmu1].minFilt != ti1->minFilt || + fxMesa->TexParams[tmu1].magFilt != ti1->magFilt || + fxMesa->TexParams[tmu1].mmMode != ti1->mmMode || + fxMesa->TexParams[tmu1].LODblend != FXFALSE || + fxMesa->TexParams[tmu1].LodBias != ctx->Texture.Unit[tmu1].LodBias) { + fxMesa->TexParams[tmu1].sClamp = ti1->sClamp; + fxMesa->TexParams[tmu1].tClamp = ti1->tClamp; + fxMesa->TexParams[tmu1].minFilt = ti1->minFilt; + fxMesa->TexParams[tmu1].magFilt = ti1->magFilt; + fxMesa->TexParams[tmu1].mmMode = ti1->mmMode; + fxMesa->TexParams[tmu1].LODblend = FXFALSE; + fxMesa->TexParams[tmu1].LodBias = ctx->Texture.Unit[tmu1].LodBias; + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PARAMS; + } + + fxMesa->sScale0 = ti0->sScale; + fxMesa->tScale0 = ti0->tScale; + fxMesa->sScale1 = ti1->sScale; + fxMesa->tScale1 = ti1->tScale; + +#undef T0_NOT_IN_TMU +#undef T1_NOT_IN_TMU +#undef T0_IN_TMU0 +#undef T1_IN_TMU0 +#undef T0_IN_TMU1 +#undef T1_IN_TMU1 +} + +static void setupTextureDoubleTMU(GLcontext * ctx) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + struct gl_texture_object *tObj0 = ctx->Texture.Unit[1]._Current; + struct gl_texture_object *tObj1 = ctx->Texture.Unit[0]._Current; + tdfxTexInfo *ti0 = TDFX_TEXTURE_DATA(tObj0); + tdfxTexInfo *ti1 = TDFX_TEXTURE_DATA(tObj1); + struct gl_texture_image *baseImage0 = tObj0->Image[0][tObj0->BaseLevel]; + struct gl_texture_image *baseImage1 = tObj1->Image[0][tObj1->BaseLevel]; +#if 0/*JJJ*/ + const GLenum envMode0 = ctx->Texture.Unit[0].EnvMode; + const GLenum envMode1 = ctx->Texture.Unit[1].EnvMode; +#endif + + if (baseImage0->Border > 0 || baseImage1->Border > 0) { + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_BORDER, GL_TRUE); + return; + } + + setupDoubleTMU(fxMesa, tObj0, tObj1); + + if (ti0->reloadImages || ti1->reloadImages) + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_IMAGES; + + fxMesa->tmuSrc = TDFX_TMU_BOTH; + + if (TDFX_IS_NAPALM(fxMesa)) { + /* Remember, Glide has its texture units numbered in backward + * order compared to OpenGL. + */ + GLboolean hw1 = GL_TRUE, hw2 = GL_TRUE; + + /* check if we really need to update glide unit 1 */ + if (1/*fxMesa->TexState.Enabled[0] != ctx->Texture.Unit[0]._ReallyEnabled || + envMode0 != fxMesa->TexState.EnvMode[1] || + envMode0 == GL_COMBINE_EXT || + baseImage0->Format != fxMesa->TexState.TexFormat[1] || + (fxMesa->Fallback & TDFX_FALLBACK_TEXTURE_ENV)*/) { + hw1 = SetupTexEnvNapalm(ctx, GL_TRUE, &ctx->Texture.Unit[0], + baseImage0->_BaseFormat, &fxMesa->TexCombineExt[1]); +#if 0/*JJJ*/ + fxMesa->TexState.EnvMode[1] = envMode0; + fxMesa->TexState.TexFormat[1] = baseImage0->_BaseFormat; + fxMesa->TexState.Enabled[0] = ctx->Texture.Unit[0]._ReallyEnabled; +#endif + } + + /* check if we really need to update glide unit 0 */ + if (1/*fxMesa->TexState.Enabled[1] != ctx->Texture.Unit[1]._ReallyEnabled || + envMode1 != fxMesa->TexState.EnvMode[0] || + envMode1 == GL_COMBINE_EXT || + baseImage1->_BaseFormat != fxMesa->TexState.TexFormat[0] || + (fxMesa->Fallback & TDFX_FALLBACK_TEXTURE_ENV)*/) { + hw2 = SetupTexEnvNapalm(ctx, GL_FALSE, &ctx->Texture.Unit[1], + baseImage1->_BaseFormat, &fxMesa->TexCombineExt[0]); +#if 0/*JJJ*/ + fxMesa->TexState.EnvMode[0] = envMode1; + fxMesa->TexState.TexFormat[0] = baseImage1->_BaseFormat; + fxMesa->TexState.Enabled[1] = ctx->Texture.Unit[1]._ReallyEnabled; +#endif + } + + + if (!hw1 || !hw2) { + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_TRUE); + } + } + else { + int unit0, unit1; + if ((ti0->whichTMU == TDFX_TMU1) || (ti1->whichTMU == TDFX_TMU0)) + unit0 = 1; + else + unit0 = 0; + unit1 = 1 - unit0; + + if (1/*fxMesa->TexState.Enabled[0] != ctx->Texture.Unit[0]._ReallyEnabled || + fxMesa->TexState.Enabled[1] != ctx->Texture.Unit[1]._ReallyEnabled || + envMode0 != fxMesa->TexState.EnvMode[unit0] || + envMode0 == GL_COMBINE_EXT || + envMode1 != fxMesa->TexState.EnvMode[unit1] || + envMode1 == GL_COMBINE_EXT || + baseImage0->_BaseFormat != fxMesa->TexState.TexFormat[unit0] || + baseImage1->_BaseFormat != fxMesa->TexState.TexFormat[unit1] || + (fxMesa->Fallback & TDFX_FALLBACK_TEXTURE_ENV)*/) { + + if (!SetupDoubleTexEnvVoodoo3(ctx, unit0, + ctx->Texture.Unit[0].EnvMode, baseImage0->_BaseFormat, + ctx->Texture.Unit[1].EnvMode, baseImage1->_BaseFormat)) { + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_TRUE); + } + +#if 0/*JJJ*/ + fxMesa->TexState.EnvMode[unit0] = envMode0; + fxMesa->TexState.TexFormat[unit0] = baseImage0->_BaseFormat; + fxMesa->TexState.EnvMode[unit1] = envMode1; + fxMesa->TexState.TexFormat[unit1] = baseImage1->_BaseFormat; + fxMesa->TexState.Enabled[0] = ctx->Texture.Unit[0]._ReallyEnabled; + fxMesa->TexState.Enabled[1] = ctx->Texture.Unit[1]._ReallyEnabled; +#endif + } + } +} + + +void +tdfxUpdateTextureState( GLcontext *ctx ) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_BORDER, GL_FALSE); + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_FALSE); + + if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT) && + ctx->Texture.Unit[1]._ReallyEnabled == 0) { + LOCK_HARDWARE( fxMesa ); /* XXX remove locking eventually */ + setupTextureSingleTMU(ctx, 0); + UNLOCK_HARDWARE( fxMesa ); + } + else if (ctx->Texture.Unit[0]._ReallyEnabled == 0 && + ctx->Texture.Unit[1]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) { + LOCK_HARDWARE( fxMesa ); + setupTextureSingleTMU(ctx, 1); + UNLOCK_HARDWARE( fxMesa ); + } + else if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT) && + ctx->Texture.Unit[1]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) { + LOCK_HARDWARE( fxMesa ); + setupTextureDoubleTMU(ctx); + UNLOCK_HARDWARE( fxMesa ); + } + else { + /* disable hardware texturing */ + if (TDFX_IS_NAPALM(fxMesa)) { + fxMesa->ColorCombineExt.SourceA = GR_CMBX_ITRGB; + fxMesa->ColorCombineExt.ModeA = GR_FUNC_MODE_X; + fxMesa->ColorCombineExt.SourceB = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.ModeB = GR_FUNC_MODE_ZERO; + fxMesa->ColorCombineExt.SourceC = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.InvertC = FXTRUE; + fxMesa->ColorCombineExt.SourceD = GR_CMBX_ZERO; + fxMesa->ColorCombineExt.InvertD = FXFALSE; + fxMesa->ColorCombineExt.Shift = 0; + fxMesa->ColorCombineExt.Invert = FXFALSE; + fxMesa->AlphaCombineExt.SourceA = GR_CMBX_ITALPHA; + fxMesa->AlphaCombineExt.ModeA = GR_FUNC_MODE_X; + fxMesa->AlphaCombineExt.SourceB = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.ModeB = GR_FUNC_MODE_ZERO; + fxMesa->AlphaCombineExt.SourceC = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.InvertC = FXTRUE; + fxMesa->AlphaCombineExt.SourceD = GR_CMBX_ZERO; + fxMesa->AlphaCombineExt.InvertD = FXFALSE; + fxMesa->AlphaCombineExt.Shift = 0; + fxMesa->AlphaCombineExt.Invert = FXFALSE; + } + else { + /* Voodoo 3*/ + fxMesa->ColorCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->ColorCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->ColorCombine.Local = GR_COMBINE_LOCAL_ITERATED; + fxMesa->ColorCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->ColorCombine.Invert = FXFALSE; + fxMesa->AlphaCombine.Function = GR_COMBINE_FUNCTION_LOCAL; + fxMesa->AlphaCombine.Factor = GR_COMBINE_FACTOR_NONE; + fxMesa->AlphaCombine.Local = GR_COMBINE_LOCAL_ITERATED; + fxMesa->AlphaCombine.Other = GR_COMBINE_OTHER_NONE; + fxMesa->AlphaCombine.Invert = FXFALSE; + } + + fxMesa->TexState.Enabled[0] = 0; + fxMesa->TexState.Enabled[1] = 0; + fxMesa->TexState.EnvMode[0] = 0; + fxMesa->TexState.EnvMode[1] = 0; + + fxMesa->dirty |= TDFX_UPLOAD_COLOR_COMBINE; + fxMesa->dirty |= TDFX_UPLOAD_ALPHA_COMBINE; + + if (ctx->Texture.Unit[0]._ReallyEnabled != 0 || + ctx->Texture.Unit[1]._ReallyEnabled != 0) { + /* software texture (cube map, rect tex, etc */ + FALLBACK(fxMesa, TDFX_FALLBACK_TEXTURE_ENV, GL_TRUE); + } + } +} + + + +/* + * This is a special case of texture state update. + * It's used when we've simply bound a new texture to a texture + * unit and the new texture has the exact same attributes as the + * previously bound texture. + * This is very common in Quake3. + */ +void +tdfxUpdateTextureBinding( GLcontext *ctx ) +{ + tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx); + struct gl_texture_object *tObj0 = ctx->Texture.Unit[0]._Current; + struct gl_texture_object *tObj1 = ctx->Texture.Unit[1]._Current; + tdfxTexInfo *ti0 = TDFX_TEXTURE_DATA(tObj0); + tdfxTexInfo *ti1 = TDFX_TEXTURE_DATA(tObj1); + + const struct gl_shared_state *mesaShared = fxMesa->glCtx->Shared; + const struct tdfxSharedState *shared = (struct tdfxSharedState *) mesaShared->DriverData; + + if (ti0) { + fxMesa->sScale0 = ti0->sScale; + fxMesa->tScale0 = ti0->tScale; + if (ti0->info.format == GR_TEXFMT_P_8) { + fxMesa->TexPalette.Type = ti0->paltype; + fxMesa->TexPalette.Data = &(ti0->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + else if (ti1 && ti1->info.format == GR_TEXFMT_P_8) { + fxMesa->TexPalette.Type = ti1->paltype; + fxMesa->TexPalette.Data = &(ti1->palette); + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_PALETTE; + } + } + if (ti1) { + fxMesa->sScale1 = ti1->sScale; + fxMesa->tScale1 = ti1->tScale; + } + + if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT) && + ctx->Texture.Unit[0]._ReallyEnabled == 0) { + /* Only unit 0 2D enabled */ + if (shared->umaTexMemory) { + fxMesa->TexSource[0].StartAddress = ti0->tm[0]->startAddr; + fxMesa->TexSource[0].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[0].Info = &(ti0->info); + } + else { + if (ti0->LODblend && ti0->whichTMU == TDFX_TMU_SPLIT) { + fxMesa->TexSource[0].StartAddress = ti0->tm[TDFX_TMU0]->startAddr; + fxMesa->TexSource[0].EvenOdd = GR_MIPMAPLEVELMASK_ODD; + fxMesa->TexSource[0].Info = &(ti0->info); + fxMesa->TexSource[1].StartAddress = ti0->tm[TDFX_TMU1]->startAddr; + fxMesa->TexSource[1].EvenOdd = GR_MIPMAPLEVELMASK_EVEN; + fxMesa->TexSource[1].Info = &(ti0->info); + } + else { + FxU32 tmu; + if (ti0->whichTMU == TDFX_TMU_BOTH) + tmu = TDFX_TMU0; + else + tmu = ti0->whichTMU; + fxMesa->TexSource[0].Info = NULL; + fxMesa->TexSource[1].Info = NULL; + if (ti0->tm[tmu]) { + fxMesa->TexSource[tmu].StartAddress = ti0->tm[tmu]->startAddr; + fxMesa->TexSource[tmu].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu].Info = &(ti0->info); + } + } + } + } + else if (ctx->Texture.Unit[0]._ReallyEnabled == 0 && + ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) { + /* Only unit 1 2D enabled */ + if (shared->umaTexMemory) { + fxMesa->TexSource[0].StartAddress = ti1->tm[0]->startAddr; + fxMesa->TexSource[0].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[0].Info = &(ti1->info); + } + } + else if (ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT) && + ctx->Texture.Unit[0]._ReallyEnabled & (TEXTURE_1D_BIT|TEXTURE_2D_BIT)) { + /* Both 2D enabled */ + if (shared->umaTexMemory) { + const FxU32 tmu0 = 0, tmu1 = 1; + fxMesa->TexSource[tmu0].StartAddress = ti0->tm[0]->startAddr; + fxMesa->TexSource[tmu0].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu0].Info = &(ti0->info); + + fxMesa->TexSource[tmu1].StartAddress = ti1->tm[0]->startAddr; + fxMesa->TexSource[tmu1].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu1].Info = &(ti1->info); + } + else { + const FxU32 tmu0 = 0, tmu1 = 1; + fxMesa->TexSource[tmu0].StartAddress = ti0->tm[tmu0]->startAddr; + fxMesa->TexSource[tmu0].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu0].Info = &(ti0->info); + + fxMesa->TexSource[tmu1].StartAddress = ti1->tm[tmu1]->startAddr; + fxMesa->TexSource[tmu1].EvenOdd = GR_MIPMAPLEVELMASK_BOTH; + fxMesa->TexSource[tmu1].Info = &(ti1->info); + } + } + + + fxMesa->dirty |= TDFX_UPLOAD_TEXTURE_SOURCE; +} |