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-rw-r--r--src/mesa/swrast_setup/ss_tritmp.h154
1 files changed, 96 insertions, 58 deletions
diff --git a/src/mesa/swrast_setup/ss_tritmp.h b/src/mesa/swrast_setup/ss_tritmp.h
index 1fdf0cb599..c14468e951 100644
--- a/src/mesa/swrast_setup/ss_tritmp.h
+++ b/src/mesa/swrast_setup/ss_tritmp.h
@@ -1,8 +1,8 @@
/*
* Mesa 3-D graphics library
- * Version: 6.1
+ * Version: 7.1
*
- * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ * 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"),
@@ -26,9 +26,14 @@
*/
+/**
+ * This is where we handle assigning vertex colors based on front/back
+ * facing, compute polygon offset and handle glPolygonMode().
+ */
static void TAG(triangle)(GLcontext *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];
@@ -36,7 +41,8 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
GLenum mode = GL_FILL;
GLuint facing = 0;
GLchan saved_color[3][4];
- GLchan saved_spec[3][4];
+ GLfloat saved_col0[3][4];
+ GLfloat saved_spec[3][4];
GLfloat saved_index[3];
v[0] = &verts[e0];
@@ -46,10 +52,10 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
if (IND & (SS_TWOSIDE_BIT | SS_OFFSET_BIT | SS_UNFILLED_BIT))
{
- GLfloat ex = v[0]->win[0] - v[2]->win[0];
- GLfloat ey = v[0]->win[1] - v[2]->win[1];
- GLfloat fx = v[1]->win[0] - v[2]->win[0];
- GLfloat fy = v[1]->win[1] - v[2]->win[1];
+ 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))
@@ -66,49 +72,71 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
if (VB->ColorPtr[1]) {
GLfloat (*vbcolor)[4] = VB->ColorPtr[1]->data;
- COPY_CHAN4(saved_color[0], v[0]->color);
- COPY_CHAN4(saved_color[1], v[1]->color);
- COPY_CHAN4(saved_color[2], v[2]->color);
+ 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->ColorPtr[1]->stride) {
- SS_COLOR(v[0]->color, vbcolor[e0]);
- SS_COLOR(v[1]->color, vbcolor[e1]);
- SS_COLOR(v[2]->color, vbcolor[e2]);
+ 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 {
- SS_COLOR(v[0]->color, vbcolor[0]);
- SS_COLOR(v[1]->color, vbcolor[0]);
- SS_COLOR(v[2]->color, vbcolor[0]);
+ /* 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->SecondaryColorPtr[1]) {
GLfloat (*vbspec)[4] = VB->SecondaryColorPtr[1]->data;
- COPY_CHAN4(saved_spec[0], v[0]->specular);
- COPY_CHAN4(saved_spec[1], v[1]->specular);
- COPY_CHAN4(saved_spec[2], v[2]->specular);
+ 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->SecondaryColorPtr[1]->stride) {
- SS_SPEC(v[0]->specular, vbspec[e0]);
- SS_SPEC(v[1]->specular, vbspec[e1]);
- SS_SPEC(v[2]->specular, vbspec[e2]);
+ 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]->specular, vbspec[0]);
- SS_SPEC(v[1]->specular, vbspec[0]);
- SS_SPEC(v[2]->specular, vbspec[0]);
+ 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]);
}
}
} else {
GLfloat *vbindex = (GLfloat *)VB->IndexPtr[1]->data;
- saved_index[0] = v[0]->index;
- saved_index[1] = v[1]->index;
- saved_index[2] = v[2]->index;
+ saved_index[0] = v[0]->attrib[FRAG_ATTRIB_CI][0];
+ saved_index[1] = v[1]->attrib[FRAG_ATTRIB_CI][0];
+ saved_index[2] = v[2]->attrib[FRAG_ATTRIB_CI][0];
- SS_IND(v[0]->index, (GLuint) vbindex[e0]);
- SS_IND(v[1]->index, (GLuint) vbindex[e1]);
- SS_IND(v[2]->index, (GLuint) vbindex[e2]);
+ SS_IND(v[0]->attrib[FRAG_ATTRIB_CI][0], (GLuint) vbindex[e0]);
+ SS_IND(v[1]->attrib[FRAG_ATTRIB_CI][0], (GLuint) vbindex[e1]);
+ SS_IND(v[2]->attrib[FRAG_ATTRIB_CI][0], (GLuint) vbindex[e2]);
}
}
}
@@ -117,9 +145,9 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
if (IND & SS_OFFSET_BIT)
{
offset = ctx->Polygon.OffsetUnits * ctx->DrawBuffer->_MRD;
- z[0] = v[0]->win[2];
- z[1] = v[1]->win[2];
- z[2] = v[2]->win[2];
+ 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];
if (cc * cc > 1e-16) {
const GLfloat ez = z[0] - z[2];
const GLfloat fz = z[1] - z[2];
@@ -130,60 +158,70 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
/* Unfortunately, we need to clamp to prevent negative Zs below.
* Technically, we should do the clamping per-fragment.
*/
- offset = MAX2(offset, -v[0]->win[2]);
- offset = MAX2(offset, -v[1]->win[2]);
- offset = MAX2(offset, -v[2]->win[2]);
+ offset = MAX2(offset, -v[0]->attrib[FRAG_ATTRIB_WPOS][2]);
+ offset = MAX2(offset, -v[1]->attrib[FRAG_ATTRIB_WPOS][2]);
+ offset = MAX2(offset, -v[2]->attrib[FRAG_ATTRIB_WPOS][2]);
}
}
}
if (mode == GL_POINT) {
if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetPoint) {
- v[0]->win[2] += offset;
- v[1]->win[2] += offset;
- v[2]->win[2] += offset;
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
}
_swsetup_render_point_tri( ctx, e0, e1, e2, facing );
} else if (mode == GL_LINE) {
if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetLine) {
- v[0]->win[2] += offset;
- v[1]->win[2] += offset;
- v[2]->win[2] += offset;
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
}
_swsetup_render_line_tri( ctx, e0, e1, e2, facing );
} else {
if ((IND & SS_OFFSET_BIT) && ctx->Polygon.OffsetFill) {
- v[0]->win[2] += offset;
- v[1]->win[2] += offset;
- v[2]->win[2] += offset;
+ v[0]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[1]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
+ v[2]->attrib[FRAG_ATTRIB_WPOS][2] += offset;
}
_swrast_Triangle( ctx, v[0], v[1], v[2] );
}
+ /*
+ * Restore original vertex colors, etc.
+ */
if (IND & SS_OFFSET_BIT) {
- v[0]->win[2] = z[0];
- v[1]->win[2] = z[1];
- v[2]->win[2] = z[2];
+ 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 (IND & SS_RGBA_BIT) {
if (VB->ColorPtr[1]) {
- COPY_CHAN4(v[0]->color, saved_color[0]);
- COPY_CHAN4(v[1]->color, saved_color[1]);
- COPY_CHAN4(v[2]->color, saved_color[2]);
+ 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->SecondaryColorPtr[1]) {
- COPY_CHAN4(v[0]->specular, saved_spec[0]);
- COPY_CHAN4(v[1]->specular, saved_spec[1]);
- COPY_CHAN4(v[2]->specular, saved_spec[2]);
+ 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]);
}
} else {
- v[0]->index = saved_index[0];
- v[1]->index = saved_index[1];
- v[2]->index = saved_index[2];
+ v[0]->attrib[FRAG_ATTRIB_CI][0] = saved_index[0];
+ v[1]->attrib[FRAG_ATTRIB_CI][0] = saved_index[1];
+ v[2]->attrib[FRAG_ATTRIB_CI][0] = saved_index[2];
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-05 22:45:43 +0000