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diff --git a/src/mesa/program/prog_statevars.c b/src/mesa/program/prog_statevars.c
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-/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2007 Brian Paul 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 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
- * BRIAN PAUL 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.
- */
-
-/**
- * \file prog_statevars.c
- * Program state variable management.
- * \author Brian Paul
- */
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/imports.h"
-#include "main/macros.h"
-#include "main/mtypes.h"
-#include "prog_statevars.h"
-#include "prog_parameter.h"
-
-
-/**
- * Use the list of tokens in the state[] array to find global GL state
- * and return it in <value>. Usually, four values are returned in <value>
- * but matrix queries may return as many as 16 values.
- * This function is used for ARB vertex/fragment programs.
- * The program parser will produce the state[] values.
- */
-static void
-_mesa_fetch_state(struct gl_context *ctx, const gl_state_index state[],
- GLfloat *value)
-{
- switch (state[0]) {
- case STATE_MATERIAL:
- {
- /* state[1] is either 0=front or 1=back side */
- const GLuint face = (GLuint) state[1];
- const struct gl_material *mat = &ctx->Light.Material;
- ASSERT(face == 0 || face == 1);
- /* we rely on tokens numbered so that _BACK_ == _FRONT_+ 1 */
- ASSERT(MAT_ATTRIB_FRONT_AMBIENT + 1 == MAT_ATTRIB_BACK_AMBIENT);
- /* XXX we could get rid of this switch entirely with a little
- * work in arbprogparse.c's parse_state_single_item().
- */
- /* state[2] is the material attribute */
- switch (state[2]) {
- case STATE_AMBIENT:
- COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_AMBIENT + face]);
- return;
- case STATE_DIFFUSE:
- COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_DIFFUSE + face]);
- return;
- case STATE_SPECULAR:
- COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_SPECULAR + face]);
- return;
- case STATE_EMISSION:
- COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_EMISSION + face]);
- return;
- case STATE_SHININESS:
- value[0] = mat->Attrib[MAT_ATTRIB_FRONT_SHININESS + face][0];
- value[1] = 0.0F;
- value[2] = 0.0F;
- value[3] = 1.0F;
- return;
- default:
- _mesa_problem(ctx, "Invalid material state in fetch_state");
- return;
- }
- }
- case STATE_LIGHT:
- {
- /* state[1] is the light number */
- const GLuint ln = (GLuint) state[1];
- /* state[2] is the light attribute */
- switch (state[2]) {
- case STATE_AMBIENT:
- COPY_4V(value, ctx->Light.Light[ln].Ambient);
- return;
- case STATE_DIFFUSE:
- COPY_4V(value, ctx->Light.Light[ln].Diffuse);
- return;
- case STATE_SPECULAR:
- COPY_4V(value, ctx->Light.Light[ln].Specular);
- return;
- case STATE_POSITION:
- COPY_4V(value, ctx->Light.Light[ln].EyePosition);
- return;
- case STATE_ATTENUATION:
- value[0] = ctx->Light.Light[ln].ConstantAttenuation;
- value[1] = ctx->Light.Light[ln].LinearAttenuation;
- value[2] = ctx->Light.Light[ln].QuadraticAttenuation;
- value[3] = ctx->Light.Light[ln].SpotExponent;
- return;
- case STATE_SPOT_DIRECTION:
- COPY_3V(value, ctx->Light.Light[ln].SpotDirection);
- value[3] = ctx->Light.Light[ln]._CosCutoff;
- return;
- case STATE_SPOT_CUTOFF:
- value[0] = ctx->Light.Light[ln].SpotCutoff;
- return;
- case STATE_HALF_VECTOR:
- {
- static const GLfloat eye_z[] = {0, 0, 1};
- GLfloat p[3];
- /* Compute infinite half angle vector:
- * halfVector = normalize(normalize(lightPos) + (0, 0, 1))
- * light.EyePosition.w should be 0 for infinite lights.
- */
- COPY_3V(p, ctx->Light.Light[ln].EyePosition);
- NORMALIZE_3FV(p);
- ADD_3V(value, p, eye_z);
- NORMALIZE_3FV(value);
- value[3] = 1.0;
- }
- return;
- default:
- _mesa_problem(ctx, "Invalid light state in fetch_state");
- return;
- }
- }
- case STATE_LIGHTMODEL_AMBIENT:
- COPY_4V(value, ctx->Light.Model.Ambient);
- return;
- case STATE_LIGHTMODEL_SCENECOLOR:
- if (state[1] == 0) {
- /* front */
- GLint i;
- for (i = 0; i < 3; i++) {
- value[i] = ctx->Light.Model.Ambient[i]
- * ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT][i]
- + ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_EMISSION][i];
- }
- value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
- }
- else {
- /* back */
- GLint i;
- for (i = 0; i < 3; i++) {
- value[i] = ctx->Light.Model.Ambient[i]
- * ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_AMBIENT][i]
- + ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_EMISSION][i];
- }
- value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
- }
- return;
- case STATE_LIGHTPROD:
- {
- const GLuint ln = (GLuint) state[1];
- const GLuint face = (GLuint) state[2];
- GLint i;
- ASSERT(face == 0 || face == 1);
- switch (state[3]) {
- case STATE_AMBIENT:
- for (i = 0; i < 3; i++) {
- value[i] = ctx->Light.Light[ln].Ambient[i] *
- ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
- }
- /* [3] = material alpha */
- value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][3];
- return;
- case STATE_DIFFUSE:
- for (i = 0; i < 3; i++) {
- value[i] = ctx->Light.Light[ln].Diffuse[i] *
- ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
- }
- /* [3] = material alpha */
- value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
- return;
- case STATE_SPECULAR:
- for (i = 0; i < 3; i++) {
- value[i] = ctx->Light.Light[ln].Specular[i] *
- ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
- }
- /* [3] = material alpha */
- value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][3];
- return;
- default:
- _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
- return;
- }
- }
- case STATE_TEXGEN:
- {
- /* state[1] is the texture unit */
- const GLuint unit = (GLuint) state[1];
- /* state[2] is the texgen attribute */
- switch (state[2]) {
- case STATE_TEXGEN_EYE_S:
- COPY_4V(value, ctx->Texture.Unit[unit].GenS.EyePlane);
- return;
- case STATE_TEXGEN_EYE_T:
- COPY_4V(value, ctx->Texture.Unit[unit].GenT.EyePlane);
- return;
- case STATE_TEXGEN_EYE_R:
- COPY_4V(value, ctx->Texture.Unit[unit].GenR.EyePlane);
- return;
- case STATE_TEXGEN_EYE_Q:
- COPY_4V(value, ctx->Texture.Unit[unit].GenQ.EyePlane);
- return;
- case STATE_TEXGEN_OBJECT_S:
- COPY_4V(value, ctx->Texture.Unit[unit].GenS.ObjectPlane);
- return;
- case STATE_TEXGEN_OBJECT_T:
- COPY_4V(value, ctx->Texture.Unit[unit].GenT.ObjectPlane);
- return;
- case STATE_TEXGEN_OBJECT_R:
- COPY_4V(value, ctx->Texture.Unit[unit].GenR.ObjectPlane);
- return;
- case STATE_TEXGEN_OBJECT_Q:
- COPY_4V(value, ctx->Texture.Unit[unit].GenQ.ObjectPlane);
- return;
- default:
- _mesa_problem(ctx, "Invalid texgen state in fetch_state");
- return;
- }
- }
- case STATE_TEXENV_COLOR:
- {
- /* state[1] is the texture unit */
- const GLuint unit = (GLuint) state[1];
- COPY_4V(value, ctx->Texture.Unit[unit].EnvColor);
- }
- return;
- case STATE_FOG_COLOR:
- COPY_4V(value, ctx->Fog.Color);
- return;
- case STATE_FOG_PARAMS:
- value[0] = ctx->Fog.Density;
- value[1] = ctx->Fog.Start;
- value[2] = ctx->Fog.End;
- value[3] = (ctx->Fog.End == ctx->Fog.Start)
- ? 1.0f : (GLfloat)(1.0 / (ctx->Fog.End - ctx->Fog.Start));
- return;
- case STATE_CLIPPLANE:
- {
- const GLuint plane = (GLuint) state[1];
- COPY_4V(value, ctx->Transform.EyeUserPlane[plane]);
- }
- return;
- case STATE_POINT_SIZE:
- value[0] = ctx->Point.Size;
- value[1] = ctx->Point.MinSize;
- value[2] = ctx->Point.MaxSize;
- value[3] = ctx->Point.Threshold;
- return;
- case STATE_POINT_ATTENUATION:
- value[0] = ctx->Point.Params[0];
- value[1] = ctx->Point.Params[1];
- value[2] = ctx->Point.Params[2];
- value[3] = 1.0F;
- return;
- case STATE_MODELVIEW_MATRIX:
- case STATE_PROJECTION_MATRIX:
- case STATE_MVP_MATRIX:
- case STATE_TEXTURE_MATRIX:
- case STATE_PROGRAM_MATRIX:
- {
- /* state[0] = modelview, projection, texture, etc. */
- /* state[1] = which texture matrix or program matrix */
- /* state[2] = first row to fetch */
- /* state[3] = last row to fetch */
- /* state[4] = transpose, inverse or invtrans */
- const GLmatrix *matrix;
- const gl_state_index mat = state[0];
- const GLuint index = (GLuint) state[1];
- const GLuint firstRow = (GLuint) state[2];
- const GLuint lastRow = (GLuint) state[3];
- const gl_state_index modifier = state[4];
- const GLfloat *m;
- GLuint row, i;
- ASSERT(firstRow >= 0);
- ASSERT(firstRow < 4);
- ASSERT(lastRow >= 0);
- ASSERT(lastRow < 4);
- if (mat == STATE_MODELVIEW_MATRIX) {
- matrix = ctx->ModelviewMatrixStack.Top;
- }
- else if (mat == STATE_PROJECTION_MATRIX) {
- matrix = ctx->ProjectionMatrixStack.Top;
- }
- else if (mat == STATE_MVP_MATRIX) {
- matrix = &ctx->_ModelProjectMatrix;
- }
- else if (mat == STATE_TEXTURE_MATRIX) {
- ASSERT(index < Elements(ctx->TextureMatrixStack));
- matrix = ctx->TextureMatrixStack[index].Top;
- }
- else if (mat == STATE_PROGRAM_MATRIX) {
- ASSERT(index < Elements(ctx->ProgramMatrixStack));
- matrix = ctx->ProgramMatrixStack[index].Top;
- }
- else {
- _mesa_problem(ctx, "Bad matrix name in _mesa_fetch_state()");
- return;
- }
- if (modifier == STATE_MATRIX_INVERSE ||
- modifier == STATE_MATRIX_INVTRANS) {
- /* Be sure inverse is up to date:
- */
- _math_matrix_alloc_inv( (GLmatrix *) matrix );
- _math_matrix_analyse( (GLmatrix*) matrix );
- m = matrix->inv;
- }
- else {
- m = matrix->m;
- }
- if (modifier == STATE_MATRIX_TRANSPOSE ||
- modifier == STATE_MATRIX_INVTRANS) {
- for (i = 0, row = firstRow; row <= lastRow; row++) {
- value[i++] = m[row * 4 + 0];
- value[i++] = m[row * 4 + 1];
- value[i++] = m[row * 4 + 2];
- value[i++] = m[row * 4 + 3];
- }
- }
- else {
- for (i = 0, row = firstRow; row <= lastRow; row++) {
- value[i++] = m[row + 0];
- value[i++] = m[row + 4];
- value[i++] = m[row + 8];
- value[i++] = m[row + 12];
- }
- }
- }
- return;
- case STATE_DEPTH_RANGE:
- value[0] = ctx->Viewport.Near; /* near */
- value[1] = ctx->Viewport.Far; /* far */
- value[2] = ctx->Viewport.Far - ctx->Viewport.Near; /* far - near */
- value[3] = 1.0;
- return;
- case STATE_FRAGMENT_PROGRAM:
- {
- /* state[1] = {STATE_ENV, STATE_LOCAL} */
- /* state[2] = parameter index */
- const int idx = (int) state[2];
- switch (state[1]) {
- case STATE_ENV:
- COPY_4V(value, ctx->FragmentProgram.Parameters[idx]);
- return;
- case STATE_LOCAL:
- COPY_4V(value, ctx->FragmentProgram.Current->Base.LocalParams[idx]);
- return;
- default:
- _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
- return;
- }
- }
- return;
-
- case STATE_VERTEX_PROGRAM:
- {
- /* state[1] = {STATE_ENV, STATE_LOCAL} */
- /* state[2] = parameter index */
- const int idx = (int) state[2];
- switch (state[1]) {
- case STATE_ENV:
- COPY_4V(value, ctx->VertexProgram.Parameters[idx]);
- return;
- case STATE_LOCAL:
- COPY_4V(value, ctx->VertexProgram.Current->Base.LocalParams[idx]);
- return;
- default:
- _mesa_problem(ctx, "Bad state switch in _mesa_fetch_state()");
- return;
- }
- }
- return;
-
- case STATE_NORMAL_SCALE:
- ASSIGN_4V(value, ctx->_ModelViewInvScale, 0, 0, 1);
- return;
-
- case STATE_INTERNAL:
- switch (state[1]) {
- case STATE_CURRENT_ATTRIB:
- {
- const GLuint idx = (GLuint) state[2];
- COPY_4V(value, ctx->Current.Attrib[idx]);
- }
- return;
-
- case STATE_NORMAL_SCALE:
- ASSIGN_4V(value,
- ctx->_ModelViewInvScale,
- ctx->_ModelViewInvScale,
- ctx->_ModelViewInvScale,
- 1);
- return;
-
- case STATE_TEXRECT_SCALE:
- /* Value = { 1/texWidth, 1/texHeight, 0, 1 }.
- * Used to convert unnormalized texcoords to normalized texcoords.
- */
- {
- const int unit = (int) state[2];
- const struct gl_texture_object *texObj
- = ctx->Texture.Unit[unit]._Current;
- if (texObj) {
- struct gl_texture_image *texImage = texObj->Image[0][0];
- ASSIGN_4V(value,
- (GLfloat) (1.0 / texImage->Width),
- (GLfloat) (1.0 / texImage->Height),
- 0.0f, 1.0f);
- }
- }
- return;
-
- case STATE_FOG_PARAMS_OPTIMIZED:
- /* for simpler per-vertex/pixel fog calcs. POW (for EXP/EXP2 fog)
- * might be more expensive than EX2 on some hw, plus it needs
- * another constant (e) anyway. Linear fog can now be done with a
- * single MAD.
- * linear: fogcoord * -1/(end-start) + end/(end-start)
- * exp: 2^-(density/ln(2) * fogcoord)
- * exp2: 2^-((density/(ln(2)^2) * fogcoord)^2)
- */
- value[0] = (ctx->Fog.End == ctx->Fog.Start)
- ? 1.0f : (GLfloat)(-1.0F / (ctx->Fog.End - ctx->Fog.Start));
- value[1] = ctx->Fog.End * -value[0];
- value[2] = (GLfloat)(ctx->Fog.Density * ONE_DIV_LN2);
- value[3] = (GLfloat)(ctx->Fog.Density * ONE_DIV_SQRT_LN2);
- return;
-
- case STATE_POINT_SIZE_CLAMPED:
- {
- /* this includes implementation dependent limits, to avoid
- * another potentially necessary clamp.
- * Note: for sprites, point smooth (point AA) is ignored
- * and we'll clamp to MinPointSizeAA and MaxPointSize, because we
- * expect drivers will want to say their minimum for AA size is 0.0
- * but for non-AA it's 1.0 (because normal points with size below 1.0
- * need to get rounded up to 1.0, hence never disappear). GL does
- * not specify max clamp size for sprites, other than it needs to be
- * at least as large as max AA size, hence use non-AA size there.
- */
- GLfloat minImplSize;
- GLfloat maxImplSize;
- if (ctx->Point.PointSprite) {
- minImplSize = ctx->Const.MinPointSizeAA;
- maxImplSize = ctx->Const.MaxPointSize;
- }
- else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) {
- minImplSize = ctx->Const.MinPointSizeAA;
- maxImplSize = ctx->Const.MaxPointSizeAA;
- }
- else {
- minImplSize = ctx->Const.MinPointSize;
- maxImplSize = ctx->Const.MaxPointSize;
- }
- value[0] = ctx->Point.Size;
- value[1] = ctx->Point.MinSize >= minImplSize ? ctx->Point.MinSize : minImplSize;
- value[2] = ctx->Point.MaxSize <= maxImplSize ? ctx->Point.MaxSize : maxImplSize;
- value[3] = ctx->Point.Threshold;
- }
- return;
- case STATE_POINT_SIZE_IMPL_CLAMP:
- {
- /* for implementation clamp only in vs */
- GLfloat minImplSize;
- GLfloat maxImplSize;
- if (ctx->Point.PointSprite) {
- minImplSize = ctx->Const.MinPointSizeAA;
- maxImplSize = ctx->Const.MaxPointSize;
- }
- else if (ctx->Point.SmoothFlag || ctx->Multisample._Enabled) {
- minImplSize = ctx->Const.MinPointSizeAA;
- maxImplSize = ctx->Const.MaxPointSizeAA;
- }
- else {
- minImplSize = ctx->Const.MinPointSize;
- maxImplSize = ctx->Const.MaxPointSize;
- }
- value[0] = ctx->Point.Size;
- value[1] = minImplSize;
- value[2] = maxImplSize;
- value[3] = ctx->Point.Threshold;
- }
- return;
- case STATE_LIGHT_SPOT_DIR_NORMALIZED:
- {
- /* here, state[2] is the light number */
- /* pre-normalize spot dir */
- const GLuint ln = (GLuint) state[2];
- COPY_3V(value, ctx->Light.Light[ln]._NormSpotDirection);
- value[3] = ctx->Light.Light[ln]._CosCutoff;
- }
- return;
-
- case STATE_LIGHT_POSITION:
- {
- const GLuint ln = (GLuint) state[2];
- COPY_4V(value, ctx->Light.Light[ln]._Position);
- }
- return;
-
- case STATE_LIGHT_POSITION_NORMALIZED:
- {
- const GLuint ln = (GLuint) state[2];
- COPY_4V(value, ctx->Light.Light[ln]._Position);
- NORMALIZE_3FV( value );
- }
- return;
-
- case STATE_LIGHT_HALF_VECTOR:
- {
- const GLuint ln = (GLuint) state[2];
- GLfloat p[3];
- /* Compute infinite half angle vector:
- * halfVector = normalize(normalize(lightPos) + (0, 0, 1))
- * light.EyePosition.w should be 0 for infinite lights.
- */
- COPY_3V(p, ctx->Light.Light[ln]._Position);
- NORMALIZE_3FV(p);
- ADD_3V(value, p, ctx->_EyeZDir);
- NORMALIZE_3FV(value);
- value[3] = 1.0;
- }
- return;
-
- case STATE_PT_SCALE:
- value[0] = ctx->Pixel.RedScale;
- value[1] = ctx->Pixel.GreenScale;
- value[2] = ctx->Pixel.BlueScale;
- value[3] = ctx->Pixel.AlphaScale;
- return;
-
- case STATE_PT_BIAS:
- value[0] = ctx->Pixel.RedBias;
- value[1] = ctx->Pixel.GreenBias;
- value[2] = ctx->Pixel.BlueBias;
- value[3] = ctx->Pixel.AlphaBias;
- return;
-
- case STATE_SHADOW_AMBIENT:
- {
- const int unit = (int) state[2];
- const struct gl_texture_object *texObj
- = ctx->Texture.Unit[unit]._Current;
- if (texObj) {
- value[0] =
- value[1] =
- value[2] =
- value[3] = texObj->CompareFailValue;
- }
- }
- return;
-
- case STATE_FB_SIZE:
- value[0] = (GLfloat) (ctx->DrawBuffer->Width - 1);
- value[1] = (GLfloat) (ctx->DrawBuffer->Height - 1);
- value[2] = 0.0F;
- value[3] = 0.0F;
- return;
-
- case STATE_FB_WPOS_Y_TRANSFORM:
- /* A driver may negate this conditional by using ZW swizzle
- * instead of XY (based on e.g. some other state). */
- if (ctx->DrawBuffer->Name != 0) {
- /* Identity (XY) followed by flipping Y upside down (ZW). */
- value[0] = 1.0F;
- value[1] = 0.0F;
- value[2] = -1.0F;
- value[3] = (GLfloat) (ctx->DrawBuffer->Height - 1);
- } else {
- /* Flipping Y upside down (XY) followed by identity (ZW). */
- value[0] = -1.0F;
- value[1] = (GLfloat) (ctx->DrawBuffer->Height - 1);
- value[2] = 1.0F;
- value[3] = 0.0F;
- }
- return;
-
- case STATE_ROT_MATRIX_0:
- {
- const int unit = (int) state[2];
- GLfloat *rotMat22 = ctx->Texture.Unit[unit].RotMatrix;
- value[0] = rotMat22[0];
- value[1] = rotMat22[2];
- value[2] = 0.0;
- value[3] = 0.0;
- }
- return;
-
- case STATE_ROT_MATRIX_1:
- {
- const int unit = (int) state[2];
- GLfloat *rotMat22 = ctx->Texture.Unit[unit].RotMatrix;
- value[0] = rotMat22[1];
- value[1] = rotMat22[3];
- value[2] = 0.0;
- value[3] = 0.0;
- }
- return;
-
- /* XXX: make sure new tokens added here are also handled in the
- * _mesa_program_state_flags() switch, below.
- */
- default:
- /* Unknown state indexes are silently ignored here.
- * Drivers may do something special.
- */
- return;
- }
- return;
-
- default:
- _mesa_problem(ctx, "Invalid state in _mesa_fetch_state");
- return;
- }
-}
-
-
-/**
- * Return a bitmask of the Mesa state flags (_NEW_* values) which would
- * indicate that the given context state may have changed.
- * The bitmask is used during validation to determine if we need to update
- * vertex/fragment program parameters (like "state.material.color") when
- * some GL state has changed.
- */
-GLbitfield
-_mesa_program_state_flags(const gl_state_index state[STATE_LENGTH])
-{
- switch (state[0]) {
- case STATE_MATERIAL:
- case STATE_LIGHT:
- case STATE_LIGHTMODEL_AMBIENT:
- case STATE_LIGHTMODEL_SCENECOLOR:
- case STATE_LIGHTPROD:
- return _NEW_LIGHT;
-
- case STATE_TEXGEN:
- case STATE_TEXENV_COLOR:
- return _NEW_TEXTURE;
-
- case STATE_FOG_COLOR:
- case STATE_FOG_PARAMS:
- return _NEW_FOG;
-
- case STATE_CLIPPLANE:
- return _NEW_TRANSFORM;
-
- case STATE_POINT_SIZE:
- case STATE_POINT_ATTENUATION:
- return _NEW_POINT;
-
- case STATE_MODELVIEW_MATRIX:
- return _NEW_MODELVIEW;
- case STATE_PROJECTION_MATRIX:
- return _NEW_PROJECTION;
- case STATE_MVP_MATRIX:
- return _NEW_MODELVIEW | _NEW_PROJECTION;
- case STATE_TEXTURE_MATRIX:
- return _NEW_TEXTURE_MATRIX;
- case STATE_PROGRAM_MATRIX:
- return _NEW_TRACK_MATRIX;
-
- case STATE_DEPTH_RANGE:
- return _NEW_VIEWPORT;
-
- case STATE_FRAGMENT_PROGRAM:
- case STATE_VERTEX_PROGRAM:
- return _NEW_PROGRAM;
-
- case STATE_NORMAL_SCALE:
- return _NEW_MODELVIEW;
-
- case STATE_INTERNAL:
- switch (state[1]) {
- case STATE_CURRENT_ATTRIB:
- return _NEW_CURRENT_ATTRIB;
-
- case STATE_NORMAL_SCALE:
- return _NEW_MODELVIEW;
-
- case STATE_TEXRECT_SCALE:
- case STATE_SHADOW_AMBIENT:
- case STATE_ROT_MATRIX_0:
- case STATE_ROT_MATRIX_1:
- return _NEW_TEXTURE;
- case STATE_FOG_PARAMS_OPTIMIZED:
- return _NEW_FOG;
- case STATE_POINT_SIZE_CLAMPED:
- case STATE_POINT_SIZE_IMPL_CLAMP:
- return _NEW_POINT | _NEW_MULTISAMPLE;
- case STATE_LIGHT_SPOT_DIR_NORMALIZED:
- case STATE_LIGHT_POSITION:
- case STATE_LIGHT_POSITION_NORMALIZED:
- case STATE_LIGHT_HALF_VECTOR:
- return _NEW_LIGHT;
-
- case STATE_PT_SCALE:
- case STATE_PT_BIAS:
- return _NEW_PIXEL;
-
- case STATE_FB_SIZE:
- case STATE_FB_WPOS_Y_TRANSFORM:
- return _NEW_BUFFERS;
-
- default:
- /* unknown state indexes are silently ignored and
- * no flag set, since it is handled by the driver.
- */
- return 0;
- }
-
- default:
- _mesa_problem(NULL, "unexpected state[0] in make_state_flags()");
- return 0;
- }
-}
-
-
-static void
-append(char *dst, const char *src)
-{
- while (*dst)
- dst++;
- while (*src)
- *dst++ = *src++;
- *dst = 0;
-}
-
-
-/**
- * Convert token 'k' to a string, append it onto 'dst' string.
- */
-static void
-append_token(char *dst, gl_state_index k)
-{
- switch (k) {
- case STATE_MATERIAL:
- append(dst, "material");
- break;
- case STATE_LIGHT:
- append(dst, "light");
- break;
- case STATE_LIGHTMODEL_AMBIENT:
- append(dst, "lightmodel.ambient");
- break;
- case STATE_LIGHTMODEL_SCENECOLOR:
- break;
- case STATE_LIGHTPROD:
- append(dst, "lightprod");
- break;
- case STATE_TEXGEN:
- append(dst, "texgen");
- break;
- case STATE_FOG_COLOR:
- append(dst, "fog.color");
- break;
- case STATE_FOG_PARAMS:
- append(dst, "fog.params");
- break;
- case STATE_CLIPPLANE:
- append(dst, "clip");
- break;
- case STATE_POINT_SIZE:
- append(dst, "point.size");
- break;
- case STATE_POINT_ATTENUATION:
- append(dst, "point.attenuation");
- break;
- case STATE_MODELVIEW_MATRIX:
- append(dst, "matrix.modelview");
- break;
- case STATE_PROJECTION_MATRIX:
- append(dst, "matrix.projection");
- break;
- case STATE_MVP_MATRIX:
- append(dst, "matrix.mvp");
- break;
- case STATE_TEXTURE_MATRIX:
- append(dst, "matrix.texture");
- break;
- case STATE_PROGRAM_MATRIX:
- append(dst, "matrix.program");
- break;
- case STATE_MATRIX_INVERSE:
- append(dst, ".inverse");
- break;
- case STATE_MATRIX_TRANSPOSE:
- append(dst, ".transpose");
- break;
- case STATE_MATRIX_INVTRANS:
- append(dst, ".invtrans");
- break;
- case STATE_AMBIENT:
- append(dst, ".ambient");
- break;
- case STATE_DIFFUSE:
- append(dst, ".diffuse");
- break;
- case STATE_SPECULAR:
- append(dst, ".specular");
- break;
- case STATE_EMISSION:
- append(dst, ".emission");
- break;
- case STATE_SHININESS:
- append(dst, "lshininess");
- break;
- case STATE_HALF_VECTOR:
- append(dst, ".half");
- break;
- case STATE_POSITION:
- append(dst, ".position");
- break;
- case STATE_ATTENUATION:
- append(dst, ".attenuation");
- break;
- case STATE_SPOT_DIRECTION:
- append(dst, ".spot.direction");
- break;
- case STATE_SPOT_CUTOFF:
- append(dst, ".spot.cutoff");
- break;
- case STATE_TEXGEN_EYE_S:
- append(dst, ".eye.s");
- break;
- case STATE_TEXGEN_EYE_T:
- append(dst, ".eye.t");
- break;
- case STATE_TEXGEN_EYE_R:
- append(dst, ".eye.r");
- break;
- case STATE_TEXGEN_EYE_Q:
- append(dst, ".eye.q");
- break;
- case STATE_TEXGEN_OBJECT_S:
- append(dst, ".object.s");
- break;
- case STATE_TEXGEN_OBJECT_T:
- append(dst, ".object.t");
- break;
- case STATE_TEXGEN_OBJECT_R:
- append(dst, ".object.r");
- break;
- case STATE_TEXGEN_OBJECT_Q:
- append(dst, ".object.q");
- break;
- case STATE_TEXENV_COLOR:
- append(dst, "texenv");
- break;
- case STATE_DEPTH_RANGE:
- append(dst, "depth.range");
- break;
- case STATE_VERTEX_PROGRAM:
- case STATE_FRAGMENT_PROGRAM:
- break;
- case STATE_ENV:
- append(dst, "env");
- break;
- case STATE_LOCAL:
- append(dst, "local");
- break;
- /* BEGIN internal state vars */
- case STATE_INTERNAL:
- append(dst, ".internal.");
- break;
- case STATE_CURRENT_ATTRIB:
- append(dst, "current");
- break;
- case STATE_NORMAL_SCALE:
- append(dst, "normalScale");
- break;
- case STATE_TEXRECT_SCALE:
- append(dst, "texrectScale");
- break;
- case STATE_FOG_PARAMS_OPTIMIZED:
- append(dst, "fogParamsOptimized");
- break;
- case STATE_POINT_SIZE_CLAMPED:
- append(dst, "pointSizeClamped");
- break;
- case STATE_POINT_SIZE_IMPL_CLAMP:
- append(dst, "pointSizeImplClamp");
- break;
- case STATE_LIGHT_SPOT_DIR_NORMALIZED:
- append(dst, "lightSpotDirNormalized");
- break;
- case STATE_LIGHT_POSITION:
- append(dst, "lightPosition");
- break;
- case STATE_LIGHT_POSITION_NORMALIZED:
- append(dst, "light.position.normalized");
- break;
- case STATE_LIGHT_HALF_VECTOR:
- append(dst, "lightHalfVector");
- break;
- case STATE_PT_SCALE:
- append(dst, "PTscale");
- break;
- case STATE_PT_BIAS:
- append(dst, "PTbias");
- break;
- case STATE_SHADOW_AMBIENT:
- append(dst, "CompareFailValue");
- break;
- case STATE_FB_SIZE:
- append(dst, "FbSize");
- break;
- case STATE_FB_WPOS_Y_TRANSFORM:
- append(dst, "FbWposYTransform");
- break;
- case STATE_ROT_MATRIX_0:
- append(dst, "rotMatrixRow0");
- break;
- case STATE_ROT_MATRIX_1:
- append(dst, "rotMatrixRow1");
- break;
- default:
- /* probably STATE_INTERNAL_DRIVER+i (driver private state) */
- append(dst, "driverState");
- }
-}
-
-static void
-append_face(char *dst, GLint face)
-{
- if (face == 0)
- append(dst, "front.");
- else
- append(dst, "back.");
-}
-
-static void
-append_index(char *dst, GLint index)
-{
- char s[20];
- sprintf(s, "[%d]", index);
- append(dst, s);
-}
-
-/**
- * Make a string from the given state vector.
- * For example, return "state.matrix.texture[2].inverse".
- * Use free() to deallocate the string.
- */
-char *
-_mesa_program_state_string(const gl_state_index state[STATE_LENGTH])
-{
- char str[1000] = "";
- char tmp[30];
-
- append(str, "state.");
- append_token(str, state[0]);
-
- switch (state[0]) {
- case STATE_MATERIAL:
- append_face(str, state[1]);
- append_token(str, state[2]);
- break;
- case STATE_LIGHT:
- append_index(str, state[1]); /* light number [i]. */
- append_token(str, state[2]); /* coefficients */
- break;
- case STATE_LIGHTMODEL_AMBIENT:
- append(str, "lightmodel.ambient");
- break;
- case STATE_LIGHTMODEL_SCENECOLOR:
- if (state[1] == 0) {
- append(str, "lightmodel.front.scenecolor");
- }
- else {
- append(str, "lightmodel.back.scenecolor");
- }
- break;
- case STATE_LIGHTPROD:
- append_index(str, state[1]); /* light number [i]. */
- append_face(str, state[2]);
- append_token(str, state[3]);
- break;
- case STATE_TEXGEN:
- append_index(str, state[1]); /* tex unit [i] */
- append_token(str, state[2]); /* plane coef */
- break;
- case STATE_TEXENV_COLOR:
- append_index(str, state[1]); /* tex unit [i] */
- append(str, "color");
- break;
- case STATE_CLIPPLANE:
- append_index(str, state[1]); /* plane [i] */
- append(str, ".plane");
- break;
- case STATE_MODELVIEW_MATRIX:
- case STATE_PROJECTION_MATRIX:
- case STATE_MVP_MATRIX:
- case STATE_TEXTURE_MATRIX:
- case STATE_PROGRAM_MATRIX:
- {
- /* state[0] = modelview, projection, texture, etc. */
- /* state[1] = which texture matrix or program matrix */
- /* state[2] = first row to fetch */
- /* state[3] = last row to fetch */
- /* state[4] = transpose, inverse or invtrans */
- const gl_state_index mat = state[0];
- const GLuint index = (GLuint) state[1];
- const GLuint firstRow = (GLuint) state[2];
- const GLuint lastRow = (GLuint) state[3];
- const gl_state_index modifier = state[4];
- if (index ||
- mat == STATE_TEXTURE_MATRIX ||
- mat == STATE_PROGRAM_MATRIX)
- append_index(str, index);
- if (modifier)
- append_token(str, modifier);
- if (firstRow == lastRow)
- sprintf(tmp, ".row[%d]", firstRow);
- else
- sprintf(tmp, ".row[%d..%d]", firstRow, lastRow);
- append(str, tmp);
- }
- break;
- case STATE_POINT_SIZE:
- break;
- case STATE_POINT_ATTENUATION:
- break;
- case STATE_FOG_PARAMS:
- break;
- case STATE_FOG_COLOR:
- break;
- case STATE_DEPTH_RANGE:
- break;
- case STATE_FRAGMENT_PROGRAM:
- case STATE_VERTEX_PROGRAM:
- /* state[1] = {STATE_ENV, STATE_LOCAL} */
- /* state[2] = parameter index */
- append_token(str, state[1]);
- append_index(str, state[2]);
- break;
- case STATE_NORMAL_SCALE:
- break;
- case STATE_INTERNAL:
- append_token(str, state[1]);
- if (state[1] == STATE_CURRENT_ATTRIB)
- append_index(str, state[2]);
- break;
- default:
- _mesa_problem(NULL, "Invalid state in _mesa_program_state_string");
- break;
- }
-
- return _mesa_strdup(str);
-}
-
-
-/**
- * Loop over all the parameters in a parameter list. If the parameter
- * is a GL state reference, look up the current value of that state
- * variable and put it into the parameter's Value[4] array.
- * Other parameter types never change or are explicitly set by the user
- * with glUniform() or glProgramParameter(), etc.
- * This would be called at glBegin time.
- */
-void
-_mesa_load_state_parameters(struct gl_context *ctx,
- struct gl_program_parameter_list *paramList)
-{
- GLuint i;
-
- if (!paramList)
- return;
-
- for (i = 0; i < paramList->NumParameters; i++) {
- if (paramList->Parameters[i].Type == PROGRAM_STATE_VAR) {
- _mesa_fetch_state(ctx,
- paramList->Parameters[i].StateIndexes,
- paramList->ParameterValues[i]);
- }
- }
-}
-
-
-/**
- * Copy the 16 elements of a matrix into four consecutive program
- * registers starting at 'pos'.
- */
-static void
-load_matrix(GLfloat registers[][4], GLuint pos, const GLfloat mat[16])
-{
- GLuint i;
- for (i = 0; i < 4; i++) {
- registers[pos + i][0] = mat[0 + i];
- registers[pos + i][1] = mat[4 + i];
- registers[pos + i][2] = mat[8 + i];
- registers[pos + i][3] = mat[12 + i];
- }
-}
-
-
-/**
- * As above, but transpose the matrix.
- */
-static void
-load_transpose_matrix(GLfloat registers[][4], GLuint pos,
- const GLfloat mat[16])
-{
- memcpy(registers[pos], mat, 16 * sizeof(GLfloat));
-}
-
-
-/**
- * Load current vertex program's parameter registers with tracked
- * matrices (if NV program). This only needs to be done per
- * glBegin/glEnd, not per-vertex.
- */
-void
-_mesa_load_tracked_matrices(struct gl_context *ctx)
-{
- GLuint i;
-
- for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
- /* point 'mat' at source matrix */
- GLmatrix *mat;
- if (ctx->VertexProgram.TrackMatrix[i] == GL_MODELVIEW) {
- mat = ctx->ModelviewMatrixStack.Top;
- }
- else if (ctx->VertexProgram.TrackMatrix[i] == GL_PROJECTION) {
- mat = ctx->ProjectionMatrixStack.Top;
- }
- else if (ctx->VertexProgram.TrackMatrix[i] == GL_TEXTURE) {
- GLuint unit = MIN2(ctx->Texture.CurrentUnit,
- Elements(ctx->TextureMatrixStack) - 1);
- mat = ctx->TextureMatrixStack[unit].Top;
- }
- else if (ctx->VertexProgram.TrackMatrix[i]==GL_MODELVIEW_PROJECTION_NV) {
- /* XXX verify the combined matrix is up to date */
- mat = &ctx->_ModelProjectMatrix;
- }
- else if (ctx->VertexProgram.TrackMatrix[i] >= GL_MATRIX0_NV &&
- ctx->VertexProgram.TrackMatrix[i] <= GL_MATRIX7_NV) {
- GLuint n = ctx->VertexProgram.TrackMatrix[i] - GL_MATRIX0_NV;
- ASSERT(n < Elements(ctx->ProgramMatrixStack));
- mat = ctx->ProgramMatrixStack[n].Top;
- }
- else {
- /* no matrix is tracked, but we leave the register values as-is */
- assert(ctx->VertexProgram.TrackMatrix[i] == GL_NONE);
- continue;
- }
-
- /* load the matrix values into sequential registers */
- if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_IDENTITY_NV) {
- load_matrix(ctx->VertexProgram.Parameters, i*4, mat->m);
- }
- else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_INVERSE_NV) {
- _math_matrix_analyse(mat); /* update the inverse */
- ASSERT(!_math_matrix_is_dirty(mat));
- load_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv);
- }
- else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_TRANSPOSE_NV) {
- load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->m);
- }
- else {
- assert(ctx->VertexProgram.TrackMatrixTransform[i]
- == GL_INVERSE_TRANSPOSE_NV);
- _math_matrix_analyse(mat); /* update the inverse */
- ASSERT(!_math_matrix_is_dirty(mat));
- load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv);
- }
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-04 02:50:06 +0000