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-rw-r--r--mesalib/src/mesa/swrast_setup/ss_tritmp.h496
1 files changed, 248 insertions, 248 deletions
diff --git a/mesalib/src/mesa/swrast_setup/ss_tritmp.h b/mesalib/src/mesa/swrast_setup/ss_tritmp.h
index 9b2b7cf6a..5844ad594 100644
--- a/mesalib/src/mesa/swrast_setup/ss_tritmp.h
+++ b/mesalib/src/mesa/swrast_setup/ss_tritmp.h
@@ -1,248 +1,248 @@
-/*
- * 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.
- *
- * Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
-
-
-/**
- * This is where we handle assigning vertex colors based on front/back
- * facing, compute polygon offset and handle glPolygonMode().
- */
-static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e2 )
-{
- struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
- SScontext *swsetup = SWSETUP_CONTEXT(ctx);
- SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
- SWvertex *v[3];
- GLfloat z[3];
- GLfloat offset, oz0, oz1, oz2;
- GLenum mode = GL_FILL;
- GLuint facing = 0;
- GLchan saved_color[3][4] = { { 0 } };
- GLfloat saved_col0[3][4] = { { 0 } };
- GLfloat saved_spec[3][4] = { { 0 } };
-
- v[0] = &verts[e0];
- v[1] = &verts[e1];
- v[2] = &verts[e2];
-
- if (IND & (SS_TWOSIDE_BIT | SS_OFFSET_BIT | SS_UNFILLED_BIT))
- {
- GLfloat ex = v[0]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
- GLfloat ey = v[0]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
- GLfloat fx = v[1]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
- GLfloat fy = v[1]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
- GLfloat cc = ex*fy - ey*fx;
-
- if (IND & (SS_TWOSIDE_BIT | SS_UNFILLED_BIT))
- {
- facing = (cc < 0.0) ^ ctx->Polygon._FrontBit;
-
- if (IND & SS_UNFILLED_BIT)
- mode = facing ? ctx->Polygon.BackMode : ctx->Polygon.FrontMode;
-
- if (facing == 1) {
- if (IND & SS_TWOSIDE_BIT) {
- if (VB->BackfaceColorPtr) {
- GLfloat (*vbcolor)[4] = VB->BackfaceColorPtr->data;
-
- if (swsetup->intColors) {
- COPY_CHAN4(saved_color[0], v[0]->color);
- COPY_CHAN4(saved_color[1], v[1]->color);
- COPY_CHAN4(saved_color[2], v[2]->color);
- }
- else {
- COPY_4V(saved_col0[0], v[0]->attrib[FRAG_ATTRIB_COL0]);
- COPY_4V(saved_col0[1], v[1]->attrib[FRAG_ATTRIB_COL0]);
- COPY_4V(saved_col0[2], v[2]->attrib[FRAG_ATTRIB_COL0]);
- }
-
- if (VB->BackfaceColorPtr->stride) {
- if (swsetup->intColors) {
- SS_COLOR(v[0]->color, vbcolor[e0]);
- SS_COLOR(v[1]->color, vbcolor[e1]);
- SS_COLOR(v[2]->color, vbcolor[e2]);
- }
- else {
- COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[e0]);
- COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[e1]);
- COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[e2]);
- }
- }
- else {
- /* flat shade */
- if (swsetup->intColors) {
- SS_COLOR(v[0]->color, vbcolor[0]);
- SS_COLOR(v[1]->color, vbcolor[0]);
- SS_COLOR(v[2]->color, vbcolor[0]);
- }
- else {
- COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
- COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
- COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
- }
- }
- }
-
- if (VB->BackfaceSecondaryColorPtr) {
- GLfloat (*vbspec)[4] = VB->BackfaceSecondaryColorPtr->data;
-
- COPY_4V(saved_spec[0], v[0]->attrib[FRAG_ATTRIB_COL1]);
- COPY_4V(saved_spec[1], v[1]->attrib[FRAG_ATTRIB_COL1]);
- COPY_4V(saved_spec[2], v[2]->attrib[FRAG_ATTRIB_COL1]);
-
- if (VB->BackfaceSecondaryColorPtr->stride) {
- SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[e0]);
- SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[e1]);
- SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[e2]);
- }
- else {
- SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
- SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
- SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
- }
- }
- }
- }
- }
-
- if (IND & SS_OFFSET_BIT) {
- const GLfloat max = ctx->DrawBuffer->_DepthMaxF;
- /* save original Z values (restored later) */
- z[0] = v[0]->attrib[FRAG_ATTRIB_WPOS][2];
- z[1] = v[1]->attrib[FRAG_ATTRIB_WPOS][2];
- z[2] = v[2]->attrib[FRAG_ATTRIB_WPOS][2];
- /* Note that Z values are already scaled to [0,65535] (for example)
- * so no MRD value is used here.
- */
- offset = ctx->Polygon.OffsetUnits;
- if (cc * cc > 1e-16) {
- const GLfloat ez = z[0] - z[2];
- const GLfloat fz = z[1] - z[2];
- const GLfloat oneOverArea = 1.0F / cc;
- const GLfloat dzdx = FABSF((ey * fz - ez * fy) * oneOverArea);
- const GLfloat dzdy = FABSF((ez * fx - ex * fz) * oneOverArea);
- offset += MAX2(dzdx, dzdy) * ctx->Polygon.OffsetFactor;
- }
- /* new Z values */
- oz0 = CLAMP(v[0]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
- oz1 = CLAMP(v[1]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
- oz2 = CLAMP(v[2]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
- }
- }
-
- if (mode == GL_POINT) {
- if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetPoint) {
- v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
- v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
- v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
- }
- _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_point_tri);
- } else if (mode == GL_LINE) {
- if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetLine) {
- v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
- v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
- v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
- }
- _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_line_tri);
- } else {
- if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetFill) {
- v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
- v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
- v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
- }
- _swrast_Triangle( ctx, v[0], v[1], v[2] );
- }
-
- /*
- * Restore original vertex colors, etc.
- */
- if (IND & SS_OFFSET_BIT) {
- v[0]->attrib[FRAG_ATTRIB_WPOS][2] = z[0];
- v[1]->attrib[FRAG_ATTRIB_WPOS][2] = z[1];
- v[2]->attrib[FRAG_ATTRIB_WPOS][2] = z[2];
- }
-
- if (IND & SS_TWOSIDE_BIT) {
- if (facing == 1) {
- if (VB->BackfaceColorPtr) {
- if (swsetup->intColors) {
- COPY_CHAN4(v[0]->color, saved_color[0]);
- COPY_CHAN4(v[1]->color, saved_color[1]);
- COPY_CHAN4(v[2]->color, saved_color[2]);
- }
- else {
- COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], saved_col0[0]);
- COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], saved_col0[1]);
- COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], saved_col0[2]);
- }
- }
-
- if (VB->BackfaceSecondaryColorPtr) {
- COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL1], saved_spec[0]);
- COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL1], saved_spec[1]);
- COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL1], saved_spec[2]);
- }
- }
- }
-}
-
-
-
-/* Need to fixup edgeflags when decomposing to triangles:
- */
-static void TAG(quadfunc)( struct gl_context *ctx, GLuint v0,
- GLuint v1, GLuint v2, GLuint v3 )
-{
- if (IND & SS_UNFILLED_BIT) {
- struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
- if (VB->EdgeFlag) { /* XXX this test shouldn't be needed (bug 12614) */
- GLubyte ef1 = VB->EdgeFlag[v1];
- GLubyte ef3 = VB->EdgeFlag[v3];
- VB->EdgeFlag[v1] = 0;
- TAG(triangle)( ctx, v0, v1, v3 );
- VB->EdgeFlag[v1] = ef1;
- VB->EdgeFlag[v3] = 0;
- TAG(triangle)( ctx, v1, v2, v3 );
- VB->EdgeFlag[v3] = ef3;
- }
- } else {
- TAG(triangle)( ctx, v0, v1, v3 );
- TAG(triangle)( ctx, v1, v2, v3 );
- }
-}
-
-
-
-
-static void TAG(init)( void )
-{
- tri_tab[IND] = TAG(triangle);
- quad_tab[IND] = TAG(quadfunc);
-}
-
-
-#undef IND
-#undef TAG
+/*
+ * 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.
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+/**
+ * This is where we handle assigning vertex colors based on front/back
+ * facing, compute polygon offset and handle glPolygonMode().
+ */
+static void TAG(triangle)(struct gl_context *ctx, GLuint e0, GLuint e1, GLuint e2 )
+{
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ SScontext *swsetup = SWSETUP_CONTEXT(ctx);
+ SWvertex *verts = SWSETUP_CONTEXT(ctx)->verts;
+ SWvertex *v[3];
+ GLfloat z[3];
+ GLfloat offset, oz0, oz1, oz2;
+ GLenum mode = GL_FILL;
+ GLuint facing = 0;
+ GLchan saved_color[3][4] = { { 0 } };
+ GLfloat saved_col0[3][4] = { { 0 } };
+ GLfloat saved_spec[3][4] = { { 0 } };
+
+ v[0] = &verts[e0];
+ v[1] = &verts[e1];
+ v[2] = &verts[e2];
+
+ if (IND & (SS_TWOSIDE_BIT | SS_OFFSET_BIT | SS_UNFILLED_BIT))
+ {
+ GLfloat ex = v[0]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
+ GLfloat ey = v[0]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
+ GLfloat fx = v[1]->attrib[FRAG_ATTRIB_WPOS][0] - v[2]->attrib[FRAG_ATTRIB_WPOS][0];
+ GLfloat fy = v[1]->attrib[FRAG_ATTRIB_WPOS][1] - v[2]->attrib[FRAG_ATTRIB_WPOS][1];
+ GLfloat cc = ex*fy - ey*fx;
+
+ if (IND & (SS_TWOSIDE_BIT | SS_UNFILLED_BIT))
+ {
+ facing = (cc < 0.0) ^ ctx->Polygon._FrontBit;
+
+ if (IND & SS_UNFILLED_BIT)
+ mode = facing ? ctx->Polygon.BackMode : ctx->Polygon.FrontMode;
+
+ if (facing == 1) {
+ if (IND & SS_TWOSIDE_BIT) {
+ if (VB->BackfaceColorPtr) {
+ GLfloat (*vbcolor)[4] = VB->BackfaceColorPtr->data;
+
+ if (swsetup->intColors) {
+ COPY_CHAN4(saved_color[0], v[0]->color);
+ COPY_CHAN4(saved_color[1], v[1]->color);
+ COPY_CHAN4(saved_color[2], v[2]->color);
+ }
+ else {
+ COPY_4V(saved_col0[0], v[0]->attrib[FRAG_ATTRIB_COL0]);
+ COPY_4V(saved_col0[1], v[1]->attrib[FRAG_ATTRIB_COL0]);
+ COPY_4V(saved_col0[2], v[2]->attrib[FRAG_ATTRIB_COL0]);
+ }
+
+ if (VB->BackfaceColorPtr->stride) {
+ if (swsetup->intColors) {
+ SS_COLOR(v[0]->color, vbcolor[e0]);
+ SS_COLOR(v[1]->color, vbcolor[e1]);
+ SS_COLOR(v[2]->color, vbcolor[e2]);
+ }
+ else {
+ COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[e0]);
+ COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[e1]);
+ COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[e2]);
+ }
+ }
+ else {
+ /* flat shade */
+ if (swsetup->intColors) {
+ SS_COLOR(v[0]->color, vbcolor[0]);
+ SS_COLOR(v[1]->color, vbcolor[0]);
+ SS_COLOR(v[2]->color, vbcolor[0]);
+ }
+ else {
+ COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
+ COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
+ COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], vbcolor[0]);
+ }
+ }
+ }
+
+ if (VB->BackfaceSecondaryColorPtr) {
+ GLfloat (*vbspec)[4] = VB->BackfaceSecondaryColorPtr->data;
+
+ COPY_4V(saved_spec[0], v[0]->attrib[FRAG_ATTRIB_COL1]);
+ COPY_4V(saved_spec[1], v[1]->attrib[FRAG_ATTRIB_COL1]);
+ COPY_4V(saved_spec[2], v[2]->attrib[FRAG_ATTRIB_COL1]);
+
+ if (VB->BackfaceSecondaryColorPtr->stride) {
+ SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[e0]);
+ SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[e1]);
+ SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[e2]);
+ }
+ else {
+ SS_SPEC(v[0]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
+ SS_SPEC(v[1]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
+ SS_SPEC(v[2]->attrib[FRAG_ATTRIB_COL1], vbspec[0]);
+ }
+ }
+ }
+ }
+ }
+
+ if (IND & SS_OFFSET_BIT) {
+ const GLfloat max = ctx->DrawBuffer->_DepthMaxF;
+ /* save original Z values (restored later) */
+ z[0] = v[0]->attrib[FRAG_ATTRIB_WPOS][2];
+ z[1] = v[1]->attrib[FRAG_ATTRIB_WPOS][2];
+ z[2] = v[2]->attrib[FRAG_ATTRIB_WPOS][2];
+ /* Note that Z values are already scaled to [0,65535] (for example)
+ * so no MRD value is used here.
+ */
+ offset = ctx->Polygon.OffsetUnits;
+ if (cc * cc > 1e-16) {
+ const GLfloat ez = z[0] - z[2];
+ const GLfloat fz = z[1] - z[2];
+ const GLfloat oneOverArea = 1.0F / cc;
+ const GLfloat dzdx = FABSF((ey * fz - ez * fy) * oneOverArea);
+ const GLfloat dzdy = FABSF((ez * fx - ex * fz) * oneOverArea);
+ offset += MAX2(dzdx, dzdy) * ctx->Polygon.OffsetFactor;
+ }
+ /* new Z values */
+ oz0 = CLAMP(v[0]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
+ oz1 = CLAMP(v[1]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
+ oz2 = CLAMP(v[2]->attrib[FRAG_ATTRIB_WPOS][2] + offset, 0.0F, max);
+ }
+ }
+
+ if (mode == GL_POINT) {
+ if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetPoint) {
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+ }
+ _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_point_tri);
+ } else if (mode == GL_LINE) {
+ if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetLine) {
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+ }
+ _swsetup_render_tri(ctx, e0, e1, e2, facing, _swsetup_edge_render_line_tri);
+ } else {
+ if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetFill) {
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] = oz0;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] = oz1;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] = oz2;
+ }
+ _swrast_Triangle( ctx, v[0], v[1], v[2] );
+ }
+
+ /*
+ * Restore original vertex colors, etc.
+ */
+ if (IND & SS_OFFSET_BIT) {
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] = z[0];
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] = z[1];
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] = z[2];
+ }
+
+ if (IND & SS_TWOSIDE_BIT) {
+ if (facing == 1) {
+ if (VB->BackfaceColorPtr) {
+ if (swsetup->intColors) {
+ COPY_CHAN4(v[0]->color, saved_color[0]);
+ COPY_CHAN4(v[1]->color, saved_color[1]);
+ COPY_CHAN4(v[2]->color, saved_color[2]);
+ }
+ else {
+ COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL0], saved_col0[0]);
+ COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL0], saved_col0[1]);
+ COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL0], saved_col0[2]);
+ }
+ }
+
+ if (VB->BackfaceSecondaryColorPtr) {
+ COPY_4V(v[0]->attrib[FRAG_ATTRIB_COL1], saved_spec[0]);
+ COPY_4V(v[1]->attrib[FRAG_ATTRIB_COL1], saved_spec[1]);
+ COPY_4V(v[2]->attrib[FRAG_ATTRIB_COL1], saved_spec[2]);
+ }
+ }
+ }
+}
+
+
+
+/* Need to fixup edgeflags when decomposing to triangles:
+ */
+static void TAG(quadfunc)( struct gl_context *ctx, GLuint v0,
+ GLuint v1, GLuint v2, GLuint v3 )
+{
+ if (IND & SS_UNFILLED_BIT) {
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ if (VB->EdgeFlag) { /* XXX this test shouldn't be needed (bug 12614) */
+ GLubyte ef1 = VB->EdgeFlag[v1];
+ GLubyte ef3 = VB->EdgeFlag[v3];
+ VB->EdgeFlag[v1] = 0;
+ TAG(triangle)( ctx, v0, v1, v3 );
+ VB->EdgeFlag[v1] = ef1;
+ VB->EdgeFlag[v3] = 0;
+ TAG(triangle)( ctx, v1, v2, v3 );
+ VB->EdgeFlag[v3] = ef3;
+ }
+ } else {
+ TAG(triangle)( ctx, v0, v1, v3 );
+ TAG(triangle)( ctx, v1, v2, v3 );
+ }
+}
+
+
+
+
+static void TAG(init)( void )
+{
+ tri_tab[IND] = TAG(triangle);
+ quad_tab[IND] = TAG(quadfunc);
+}
+
+
+#undef IND
+#undef TAG
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