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Diffstat (limited to 'i915/i915_metaops.c')
-rw-r--r--i915/i915_metaops.c711
1 files changed, 711 insertions, 0 deletions
diff --git a/i915/i915_metaops.c b/i915/i915_metaops.c
new file mode 100644
index 0000000..1be7ac4
--- /dev/null
+++ b/i915/i915_metaops.c
@@ -0,0 +1,711 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include "glheader.h"
+#include "enums.h"
+#include "mtypes.h"
+#include "macros.h"
+#include "utils.h"
+
+#include "intel_screen.h"
+#include "intel_batchbuffer.h"
+#include "intel_ioctl.h"
+#include "intel_rotate.h"
+
+#include "i915_context.h"
+#include "i915_reg.h"
+
+/* A large amount of state doesn't need to be uploaded.
+ */
+#define ACTIVE (I915_UPLOAD_INVARIENT | \
+ I915_UPLOAD_PROGRAM | \
+ I915_UPLOAD_STIPPLE | \
+ I915_UPLOAD_CTX | \
+ I915_UPLOAD_BUFFERS | \
+ I915_UPLOAD_TEX(0))
+
+#define SET_STATE( i915, STATE ) \
+do { \
+ i915->current->emitted &= ~ACTIVE; \
+ i915->current = &i915->STATE; \
+ i915->current->emitted &= ~ACTIVE; \
+} while (0)
+
+/* Operations where the 3D engine is decoupled temporarily from the
+ * current GL state and used for other purposes than simply rendering
+ * incoming triangles.
+ */
+static void set_initial_state( i915ContextPtr i915 )
+{
+ memcpy(&i915->meta, &i915->initial, sizeof(i915->meta) );
+ i915->meta.active = ACTIVE;
+ i915->meta.emitted = 0;
+}
+
+
+static void set_no_depth_stencil_write( i915ContextPtr i915 )
+{
+ /* ctx->Driver.Enable( ctx, GL_STENCIL_TEST, GL_FALSE )
+ */
+ i915->meta.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_TEST_ENABLE |
+ S5_STENCIL_WRITE_ENABLE);
+
+ /* ctx->Driver.Enable( ctx, GL_DEPTH_TEST, GL_FALSE )
+ */
+ i915->meta.Ctx[I915_CTXREG_LIS6] &= ~(S6_DEPTH_TEST_ENABLE |
+ S6_DEPTH_WRITE_ENABLE);
+
+ i915->meta.emitted &= ~I915_UPLOAD_CTX;
+}
+
+/* Set stencil unit to replace always with the reference value.
+ */
+static void set_stencil_replace( i915ContextPtr i915,
+ GLuint s_mask,
+ GLuint s_clear)
+{
+ GLuint op = STENCILOP_REPLACE;
+ GLuint func = COMPAREFUNC_ALWAYS;
+
+ /* ctx->Driver.Enable( ctx, GL_STENCIL_TEST, GL_TRUE )
+ */
+ i915->meta.Ctx[I915_CTXREG_LIS5] |= (S5_STENCIL_TEST_ENABLE |
+ S5_STENCIL_WRITE_ENABLE);
+
+
+ /* ctx->Driver.Enable( ctx, GL_DEPTH_TEST, GL_FALSE )
+ */
+ i915->meta.Ctx[I915_CTXREG_LIS6] &= ~(S6_DEPTH_TEST_ENABLE |
+ S6_DEPTH_WRITE_ENABLE);
+
+
+ /* ctx->Driver.StencilMask( ctx, s_mask )
+ */
+ i915->meta.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK;
+
+ i915->meta.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_WRITE_MASK |
+ STENCIL_WRITE_MASK(s_mask));
+
+
+ /* ctx->Driver.StencilOp( ctx, GL_REPLACE, GL_REPLACE, GL_REPLACE )
+ */
+ i915->meta.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_FAIL_MASK |
+ S5_STENCIL_PASS_Z_FAIL_MASK |
+ S5_STENCIL_PASS_Z_PASS_MASK);
+
+ i915->meta.Ctx[I915_CTXREG_LIS5] |= ((op << S5_STENCIL_FAIL_SHIFT) |
+ (op << S5_STENCIL_PASS_Z_FAIL_SHIFT) |
+ (op << S5_STENCIL_PASS_Z_PASS_SHIFT));
+
+
+ /* ctx->Driver.StencilFunc( ctx, GL_ALWAYS, s_ref, ~0 )
+ */
+ i915->meta.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_TEST_MASK;
+ i915->meta.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK |
+ STENCIL_TEST_MASK(0xff));
+
+ i915->meta.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_REF_MASK |
+ S5_STENCIL_TEST_FUNC_MASK);
+
+ i915->meta.Ctx[I915_CTXREG_LIS5] |= ((s_clear << S5_STENCIL_REF_SHIFT) |
+ (func << S5_STENCIL_TEST_FUNC_SHIFT));
+
+
+ i915->meta.emitted &= ~I915_UPLOAD_CTX;
+}
+
+
+static void set_color_mask( i915ContextPtr i915, GLboolean state )
+{
+ const GLuint mask = (S5_WRITEDISABLE_RED |
+ S5_WRITEDISABLE_GREEN |
+ S5_WRITEDISABLE_BLUE |
+ S5_WRITEDISABLE_ALPHA);
+
+ /* Copy colormask state from "regular" hw context.
+ */
+ if (state) {
+ i915->meta.Ctx[I915_CTXREG_LIS5] &= ~mask;
+ i915->meta.Ctx[I915_CTXREG_LIS5] |=
+ (i915->state.Ctx[I915_CTXREG_LIS5] & mask);
+ }
+ else
+ i915->meta.Ctx[I915_CTXREG_LIS5] |= mask;
+
+ i915->meta.emitted &= ~I915_UPLOAD_CTX;
+}
+
+
+
+
+#define REG( type, nr ) (((type)<<5)|(nr))
+
+#define REG_R(x) REG(REG_TYPE_R, x)
+#define REG_T(x) REG(REG_TYPE_T, x)
+#define REG_CONST(x) REG(REG_TYPE_CONST, x)
+#define REG_S(x) REG(REG_TYPE_S, x)
+#define REG_OC REG(REG_TYPE_OC, 0)
+#define REG_OD REG(REG_TYPE_OD, 0)
+#define REG_U(x) REG(REG_TYPE_U, x)
+
+#define REG_T_DIFFUSE REG(REG_TYPE_T, T_DIFFUSE)
+#define REG_T_SPECULAR REG(REG_TYPE_T, T_SPECULAR)
+#define REG_T_FOG_W REG(REG_TYPE_T, T_FOG_W)
+#define REG_T_TEX(x) REG(REG_TYPE_T, x)
+
+
+#define A0_DEST_REG( reg ) ( (reg) << A0_DEST_NR_SHIFT )
+#define A0_SRC0_REG( reg ) ( (reg) << A0_SRC0_NR_SHIFT )
+#define A1_SRC1_REG( reg ) ( (reg) << A1_SRC1_NR_SHIFT )
+#define A1_SRC2_REG( reg ) ( (reg) << A1_SRC2_NR_SHIFT )
+#define A2_SRC2_REG( reg ) ( (reg) << A2_SRC2_NR_SHIFT )
+#define D0_DECL_REG( reg ) ( (reg) << D0_NR_SHIFT )
+#define T0_DEST_REG( reg ) ( (reg) << T0_DEST_NR_SHIFT )
+
+#define T0_SAMPLER( unit ) ((unit)<<T0_SAMPLER_NR_SHIFT)
+
+#define T1_ADDRESS_REG( type, nr ) (((type)<<T1_ADDRESS_REG_TYPE_SHIFT)| \
+ ((nr)<<T1_ADDRESS_REG_NR_SHIFT))
+
+
+#define A1_SRC0_XYZW ((SRC_X << A1_SRC0_CHANNEL_X_SHIFT) | \
+ (SRC_Y << A1_SRC0_CHANNEL_Y_SHIFT) | \
+ (SRC_Z << A1_SRC0_CHANNEL_Z_SHIFT) | \
+ (SRC_W << A1_SRC0_CHANNEL_W_SHIFT))
+
+#define A1_SRC1_XY ((SRC_X << A1_SRC1_CHANNEL_X_SHIFT) | \
+ (SRC_Y << A1_SRC1_CHANNEL_Y_SHIFT))
+
+#define A2_SRC1_ZW ((SRC_Z << A2_SRC1_CHANNEL_Z_SHIFT) | \
+ (SRC_W << A2_SRC1_CHANNEL_W_SHIFT))
+
+#define A2_SRC2_XYZW ((SRC_X << A2_SRC2_CHANNEL_X_SHIFT) | \
+ (SRC_Y << A2_SRC2_CHANNEL_Y_SHIFT) | \
+ (SRC_Z << A2_SRC2_CHANNEL_Z_SHIFT) | \
+ (SRC_W << A2_SRC2_CHANNEL_W_SHIFT))
+
+
+
+
+
+static void set_no_texture( i915ContextPtr i915 )
+{
+ static const GLuint prog[] = {
+ _3DSTATE_PIXEL_SHADER_PROGRAM,
+
+ /* Declare incoming diffuse color:
+ */
+ (D0_DCL |
+ D0_DECL_REG( REG_T_DIFFUSE ) |
+ D0_CHANNEL_ALL),
+ D1_MBZ,
+ D2_MBZ,
+
+ /* output-color = mov(t_diffuse)
+ */
+ (A0_MOV |
+ A0_DEST_REG( REG_OC ) |
+ A0_DEST_CHANNEL_ALL |
+ A0_SRC0_REG( REG_T_DIFFUSE )),
+ (A1_SRC0_XYZW),
+ 0,
+ };
+
+
+ memcpy( i915->meta.Program, prog, sizeof(prog) );
+ i915->meta.ProgramSize = sizeof(prog) / sizeof(*prog);
+ i915->meta.Program[0] |= i915->meta.ProgramSize - 2;
+ i915->meta.emitted &= ~I915_UPLOAD_PROGRAM;
+}
+
+
+static void enable_texture_blend_replace( i915ContextPtr i915 )
+{
+ static const GLuint prog[] = {
+ _3DSTATE_PIXEL_SHADER_PROGRAM,
+
+ /* Declare the sampler:
+ */
+ (D0_DCL |
+ D0_DECL_REG( REG_S(0) ) |
+ D0_SAMPLE_TYPE_2D |
+ D0_CHANNEL_NONE),
+ D1_MBZ,
+ D2_MBZ,
+
+ /* Declare the interpolated texture coordinate:
+ */
+ (D0_DCL |
+ D0_DECL_REG( REG_T_TEX(0) ) |
+ D0_CHANNEL_ALL),
+ D1_MBZ,
+ D2_MBZ,
+
+ /* output-color = texld(sample0, texcoord0)
+ */
+ (T0_TEXLD |
+ T0_DEST_REG( REG_OC ) |
+ T0_SAMPLER( 0 )),
+ T1_ADDRESS_REG(REG_TYPE_T, 0),
+ T2_MBZ
+ };
+
+ memcpy( i915->meta.Program, prog, sizeof(prog) );
+ i915->meta.ProgramSize = sizeof(prog) / sizeof(*prog);
+ i915->meta.Program[0] |= i915->meta.ProgramSize - 2;
+ i915->meta.emitted &= ~I915_UPLOAD_PROGRAM;
+}
+
+
+
+
+
+/* Set up an arbitary piece of memory as a rectangular texture
+ * (including the front or back buffer).
+ */
+static void set_tex_rect_source( i915ContextPtr i915,
+ GLuint offset,
+ GLuint width,
+ GLuint height,
+ GLuint pitch, /* in bytes! */
+ GLuint textureFormat )
+{
+ GLuint unit = 0;
+ GLint numLevels = 1;
+ GLuint *state = i915->meta.Tex[0];
+
+#if 0
+ printf("TexRect source offset 0x%x pitch %d\n", offset, pitch);
+#endif
+
+/* fprintf(stderr, "%s: offset: %x w: %d h: %d pitch %d format %x\n", */
+/* __FUNCTION__, offset, width, height, pitch, textureFormat ); */
+
+ state[I915_TEXREG_MS2] = offset;
+ state[I915_TEXREG_MS3] = (((height - 1) << MS3_HEIGHT_SHIFT) |
+ ((width - 1) << MS3_WIDTH_SHIFT) |
+ textureFormat |
+ MS3_USE_FENCE_REGS);
+
+ state[I915_TEXREG_MS4] = ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
+ ((((numLevels-1) * 4)) << MS4_MAX_LOD_SHIFT));
+
+ state[I915_TEXREG_SS2] = ((FILTER_NEAREST << SS2_MIN_FILTER_SHIFT) |
+ (MIPFILTER_NONE << SS2_MIP_FILTER_SHIFT) |
+ (FILTER_NEAREST << SS2_MAG_FILTER_SHIFT));
+ state[I915_TEXREG_SS3] = ((TEXCOORDMODE_WRAP << SS3_TCX_ADDR_MODE_SHIFT) |
+ (TEXCOORDMODE_WRAP << SS3_TCY_ADDR_MODE_SHIFT) |
+ (TEXCOORDMODE_WRAP << SS3_TCZ_ADDR_MODE_SHIFT) |
+ (unit<<SS3_TEXTUREMAP_INDEX_SHIFT));
+
+ state[I915_TEXREG_SS4] = 0;
+
+ i915->meta.emitted &= ~I915_UPLOAD_TEX(0);
+}
+
+
+/* Select between front and back draw buffers.
+ */
+static void set_draw_region( i915ContextPtr i915, const intelRegion *region )
+{
+#if 0
+ printf("Rotate into region: offset 0x%x pitch %d\n",
+ region->offset, region->pitch);
+#endif
+ i915->meta.Buffer[I915_DESTREG_CBUFADDR1] =
+ (BUF_3D_ID_COLOR_BACK | BUF_3D_PITCH(region->pitch) | BUF_3D_USE_FENCE);
+ i915->meta.Buffer[I915_DESTREG_CBUFADDR2] = region->offset;
+ i915->meta.emitted &= ~I915_UPLOAD_BUFFERS;
+}
+
+
+#if 0
+/* Setup an arbitary draw format, useful for targeting texture or agp
+ * memory.
+ */
+static void set_draw_format( i915ContextPtr i915,
+ GLuint format,
+ GLuint depth_format)
+{
+ i915->meta.Buffer[I915_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) | /* .5 */
+ DSTORG_VERT_BIAS(0x8) | /* .5 */
+ format |
+ LOD_PRECLAMP_OGL |
+ TEX_DEFAULT_COLOR_OGL |
+ depth_format);
+
+ i915->meta.emitted &= ~I915_UPLOAD_BUFFERS;
+/* fprintf(stderr, "%s: DV1: %x\n", */
+/* __FUNCTION__, i915->meta.Buffer[I915_DESTREG_DV1]); */
+}
+#endif
+
+static void set_vertex_format( i915ContextPtr i915 )
+{
+ i915->meta.Ctx[I915_CTXREG_LIS2] =
+ (S2_TEXCOORD_FMT(0, TEXCOORDFMT_2D) |
+ S2_TEXCOORD_FMT(1, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(2, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(3, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(4, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(5, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(6, TEXCOORDFMT_NOT_PRESENT) |
+ S2_TEXCOORD_FMT(7, TEXCOORDFMT_NOT_PRESENT));
+
+ i915->meta.Ctx[I915_CTXREG_LIS4] &= ~S4_VFMT_MASK;
+
+ i915->meta.Ctx[I915_CTXREG_LIS4] |=
+ (S4_VFMT_COLOR |
+ S4_VFMT_SPEC_FOG |
+ S4_VFMT_XYZW);
+
+ i915->meta.emitted &= ~I915_UPLOAD_CTX;
+
+}
+
+
+static void draw_quad(i915ContextPtr i915,
+ GLfloat x0, GLfloat x1,
+ GLfloat y0, GLfloat y1,
+ GLubyte red, GLubyte green,
+ GLubyte blue, GLubyte alpha,
+ GLfloat s0, GLfloat s1,
+ GLfloat t0, GLfloat t1 )
+{
+ GLuint vertex_size = 8;
+ GLuint *vb = intelEmitInlinePrimitiveLocked( &i915->intel,
+ PRIM3D_TRIFAN,
+ 4 * vertex_size,
+ vertex_size );
+ intelVertex tmp;
+ int i;
+
+ if (0)
+ fprintf(stderr, "%s: %f,%f-%f,%f 0x%x%x%x%x %f,%f-%f,%f\n",
+ __FUNCTION__,
+ x0,y0,x1,y1,red,green,blue,alpha,s0,t0,s1,t1);
+
+
+ /* initial vertex, left bottom */
+ tmp.v.x = x0;
+ tmp.v.y = y0;
+ tmp.v.z = 1.0;
+ tmp.v.w = 1.0;
+ tmp.v.color.red = red;
+ tmp.v.color.green = green;
+ tmp.v.color.blue = blue;
+ tmp.v.color.alpha = alpha;
+ tmp.v.specular.red = 0;
+ tmp.v.specular.green = 0;
+ tmp.v.specular.blue = 0;
+ tmp.v.specular.alpha = 0;
+ tmp.v.u0 = s0;
+ tmp.v.v0 = t0;
+
+ for (i = 0 ; i < vertex_size ; i++)
+ vb[i] = tmp.ui[i];
+
+ /* right bottom */
+ vb += vertex_size;
+ tmp.v.x = x1;
+ tmp.v.u0 = s1;
+ for (i = 0 ; i < vertex_size ; i++)
+ vb[i] = tmp.ui[i];
+
+ /* right top */
+ vb += vertex_size;
+ tmp.v.y = y1;
+ tmp.v.v0 = t1;
+ for (i = 0 ; i < vertex_size ; i++)
+ vb[i] = tmp.ui[i];
+
+ /* left top */
+ vb += vertex_size;
+ tmp.v.x = x0;
+ tmp.v.u0 = s0;
+ for (i = 0 ; i < vertex_size ; i++)
+ vb[i] = tmp.ui[i];
+}
+
+
+static void draw_poly(i915ContextPtr i915,
+ GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha,
+ GLuint numVerts,
+ /*const*/ GLfloat verts[][2],
+ /*const*/ GLfloat texcoords[][2])
+{
+ GLuint vertex_size = 8;
+ GLuint *vb = intelEmitInlinePrimitiveLocked( &i915->intel,
+ PRIM3D_TRIFAN,
+ numVerts * vertex_size,
+ vertex_size );
+ intelVertex tmp;
+ int i, k;
+
+ /* initial constant vertex fields */
+ tmp.v.z = 1.0;
+ tmp.v.w = 1.0;
+ tmp.v.color.red = red;
+ tmp.v.color.green = green;
+ tmp.v.color.blue = blue;
+ tmp.v.color.alpha = alpha;
+ tmp.v.specular.red = 0;
+ tmp.v.specular.green = 0;
+ tmp.v.specular.blue = 0;
+ tmp.v.specular.alpha = 0;
+
+ for (k = 0; k < numVerts; k++) {
+ tmp.v.x = verts[k][0];
+ tmp.v.y = verts[k][1];
+ tmp.v.u0 = texcoords[k][0];
+ tmp.v.v0 = texcoords[k][1];
+
+ for (i = 0 ; i < vertex_size ; i++)
+ vb[i] = tmp.ui[i];
+
+ vb += vertex_size;
+ }
+}
+
+
+void
+i915ClearWithTris(intelContextPtr intel, GLbitfield buffers,
+ GLboolean allFoo,
+ GLint cxFoo, GLint cyFoo, GLint cwFoo, GLint chFoo)
+{
+ i915ContextPtr i915 = I915_CONTEXT( intel );
+ __DRIdrawablePrivate *dPriv = intel->driDrawable;
+ intelScreenPrivate *screen = intel->intelScreen;
+ int x0, y0, x1, y1;
+ GLint cx, cy, cw, ch;
+ GLboolean all;
+
+ SET_STATE( i915, meta );
+ set_initial_state( i915 );
+ set_no_texture( i915 );
+ set_vertex_format( i915 );
+
+ LOCK_HARDWARE(intel);
+
+ /* get clear bounds after locking */
+ cx = intel->ctx.DrawBuffer->_Xmin;
+ cy = intel->ctx.DrawBuffer->_Ymin;
+ cw = intel->ctx.DrawBuffer->_Xmax - cx;
+ ch = intel->ctx.DrawBuffer->_Ymax - cy;
+ all = (cw == intel->ctx.DrawBuffer->Width &&
+ ch == intel->ctx.DrawBuffer->Height);
+
+ if (!all) {
+ x0 = cx;
+ y0 = cy;
+ x1 = x0 + cw;
+ y1 = y0 + ch;
+ } else {
+ x0 = 0;
+ y0 = 0;
+ x1 = x0 + dPriv->w;
+ y1 = y0 + dPriv->h;
+ }
+
+ /* Don't do any clipping to screen - these are window coordinates.
+ * The active cliprects will be applied as for any other geometry.
+ */
+
+ if (buffers & BUFFER_BIT_FRONT_LEFT) {
+ set_no_depth_stencil_write( i915 );
+ set_color_mask( i915, GL_TRUE );
+ set_draw_region( i915, &screen->front );
+
+ draw_quad(i915, x0, x1, y0, y1,
+ intel->clear_red, intel->clear_green,
+ intel->clear_blue, intel->clear_alpha,
+ 0, 0, 0, 0);
+ }
+
+ if (buffers & BUFFER_BIT_BACK_LEFT) {
+ set_no_depth_stencil_write( i915 );
+ set_color_mask( i915, GL_TRUE );
+ set_draw_region( i915, &screen->back );
+
+ draw_quad(i915, x0, x1, y0, y1,
+ intel->clear_red, intel->clear_green,
+ intel->clear_blue, intel->clear_alpha,
+ 0, 0, 0, 0);
+ }
+
+ if (buffers & BUFFER_BIT_STENCIL) {
+ set_stencil_replace( i915,
+ intel->ctx.Stencil.WriteMask[0],
+ intel->ctx.Stencil.Clear);
+
+ set_color_mask( i915, GL_FALSE );
+ set_draw_region( i915, &screen->front ); /* could be either? */
+
+ draw_quad( i915, x0, x1, y0, y1, 0, 0, 0, 0, 0, 0, 0, 0 );
+ }
+
+ UNLOCK_HARDWARE(intel);
+
+ SET_STATE( i915, state );
+}
+
+
+/**
+ * Copy the window contents named by dPriv to the rotated (or reflected)
+ * color buffer.
+ * srcBuf is BUFFER_BIT_FRONT_LEFT or BUFFER_BIT_BACK_LEFT to indicate the source.
+ */
+void
+i915RotateWindow(intelContextPtr intel, __DRIdrawablePrivate *dPriv,
+ GLuint srcBuf)
+{
+ i915ContextPtr i915 = I915_CONTEXT( intel );
+ intelScreenPrivate *screen = intel->intelScreen;
+ const GLuint cpp = screen->cpp;
+ drm_clip_rect_t fullRect;
+ GLuint textureFormat, srcOffset, srcPitch;
+ const drm_clip_rect_t *clipRects;
+ int numClipRects;
+ int i;
+
+ int xOrig, yOrig;
+ int origNumClipRects;
+ drm_clip_rect_t *origRects;
+
+ /*
+ * set up hardware state
+ */
+ intelFlush( &intel->ctx );
+
+ SET_STATE( i915, meta );
+ set_initial_state( i915 );
+ set_no_texture( i915 );
+ set_vertex_format( i915 );
+ set_no_depth_stencil_write( i915 );
+ set_color_mask( i915, GL_TRUE );
+
+ LOCK_HARDWARE(intel);
+
+ /* save current drawing origin and cliprects (restored at end) */
+ xOrig = intel->drawX;
+ yOrig = intel->drawY;
+ origNumClipRects = intel->numClipRects;
+ origRects = intel->pClipRects;
+
+ if (!intel->numClipRects)
+ goto done;
+
+ /*
+ * set drawing origin, cliprects for full-screen access to rotated screen
+ */
+ fullRect.x1 = 0;
+ fullRect.y1 = 0;
+ fullRect.x2 = screen->rotatedWidth;
+ fullRect.y2 = screen->rotatedHeight;
+ intel->drawX = 0;
+ intel->drawY = 0;
+ intel->numClipRects = 1;
+ intel->pClipRects = &fullRect;
+
+ set_draw_region( i915, &screen->rotated );
+
+ if (cpp == 4)
+ textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
+ else
+ textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
+
+ if (srcBuf == BUFFER_BIT_FRONT_LEFT) {
+ srcPitch = screen->front.pitch; /* in bytes */
+ srcOffset = screen->front.offset; /* bytes */
+ clipRects = dPriv->pClipRects;
+ numClipRects = dPriv->numClipRects;
+ }
+ else {
+ srcPitch = screen->back.pitch; /* in bytes */
+ srcOffset = screen->back.offset; /* bytes */
+ clipRects = dPriv->pBackClipRects;
+ numClipRects = dPriv->numBackClipRects;
+ }
+
+ /* set the whole screen up as a texture to avoid alignment issues */
+ set_tex_rect_source(i915,
+ srcOffset,
+ screen->width,
+ screen->height,
+ srcPitch,
+ textureFormat);
+
+ enable_texture_blend_replace(i915);
+
+ /*
+ * loop over the source window's cliprects
+ */
+ for (i = 0; i < numClipRects; i++) {
+ int srcX0 = clipRects[i].x1;
+ int srcY0 = clipRects[i].y1;
+ int srcX1 = clipRects[i].x2;
+ int srcY1 = clipRects[i].y2;
+ GLfloat verts[4][2], tex[4][2];
+ int j;
+
+ /* build vertices for four corners of clip rect */
+ verts[0][0] = srcX0; verts[0][1] = srcY0;
+ verts[1][0] = srcX1; verts[1][1] = srcY0;
+ verts[2][0] = srcX1; verts[2][1] = srcY1;
+ verts[3][0] = srcX0; verts[3][1] = srcY1;
+
+ /* .. and texcoords */
+ tex[0][0] = srcX0; tex[0][1] = srcY0;
+ tex[1][0] = srcX1; tex[1][1] = srcY0;
+ tex[2][0] = srcX1; tex[2][1] = srcY1;
+ tex[3][0] = srcX0; tex[3][1] = srcY1;
+
+ /* transform coords to rotated screen coords */
+ for (j = 0; j < 4; j++) {
+ matrix23TransformCoordf(&screen->rotMatrix,
+ &verts[j][0], &verts[j][1]);
+ }
+
+ /* draw polygon to map source image to dest region */
+ draw_poly(i915, 255, 255, 255, 255, 4, verts, tex);
+
+ } /* cliprect loop */
+
+ intelFlushBatchLocked( intel, GL_FALSE, GL_FALSE, GL_FALSE );
+
+ done:
+ /* restore original drawing origin and cliprects */
+ intel->drawX = xOrig;
+ intel->drawY = yOrig;
+ intel->numClipRects = origNumClipRects;
+ intel->pClipRects = origRects;
+
+ UNLOCK_HARDWARE(intel);
+
+ SET_STATE( i915, state );
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-08 01:08:02 +0000