summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
authorKeith Whitwell <keith@tungstengraphics.com>2003-11-28 09:43:18 +0000
committerKeith Whitwell <keith@tungstengraphics.com>2003-11-28 09:43:18 +0000
commit326bc7150d31e052f018bb40f23cf9f60cb9c35d (patch)
tree795b20d5dabfdfb8b8127559699bc5d7c136eca1 /src
parentacbc1e0c917cf0720c7b5c14ca4bab4fa8c75001 (diff)
Save and restore front colors on backfacing triangles rather than trying to
pull them again from the VB pointers. Avoids stride issues.
Diffstat (limited to 'src')
-rw-r--r--src/mesa/swrast_setup/ss_tritmp.h41
1 files changed, 28 insertions, 13 deletions
diff --git a/src/mesa/swrast_setup/ss_tritmp.h b/src/mesa/swrast_setup/ss_tritmp.h
index f977d7aca9..cc02a992ee 100644
--- a/src/mesa/swrast_setup/ss_tritmp.h
+++ b/src/mesa/swrast_setup/ss_tritmp.h
@@ -36,6 +36,9 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
GLfloat offset;
GLenum mode = GL_FILL;
GLuint facing = 0;
+ GLchan saved_color[3][4];
+ GLchan saved_spec[3][4];
+ GLuint saved_index[3];
v[0] = &verts[e0];
v[1] = &verts[e1];
@@ -63,17 +66,32 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
if (IND & SS_TWOSIDE_BIT) {
if (IND & SS_RGBA_BIT) {
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);
+
SS_COLOR(v[0]->color, vbcolor[e0]);
SS_COLOR(v[1]->color, vbcolor[e1]);
SS_COLOR(v[2]->color, vbcolor[e2]);
+
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);
+
SS_SPEC(v[0]->specular, vbspec[e0]);
SS_SPEC(v[1]->specular, vbspec[e1]);
SS_SPEC(v[2]->specular, vbspec[e2]);
}
} 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;
+
SS_IND(v[0]->index, (GLuint) vbindex[e0]);
SS_IND(v[1]->index, (GLuint) vbindex[e1]);
SS_IND(v[2]->index, (GLuint) vbindex[e2]);
@@ -137,21 +155,18 @@ static void TAG(triangle)(GLcontext *ctx, GLuint e0, GLuint e1, GLuint e2 )
if (IND & SS_TWOSIDE_BIT) {
if (facing == 1) {
if (IND & SS_RGBA_BIT) {
- GLfloat (*vbcolor)[4] = VB->ColorPtr[0]->data;
- SS_COLOR(v[0]->color, vbcolor[e0]);
- SS_COLOR(v[1]->color, vbcolor[e1]);
- SS_COLOR(v[2]->color, vbcolor[e2]);
- if (VB->SecondaryColorPtr[0]) {
- GLfloat (*vbspec)[4] = VB->SecondaryColorPtr[0]->data;
- SS_SPEC(v[0]->specular, vbspec[e0]);
- SS_SPEC(v[1]->specular, vbspec[e1]);
- SS_SPEC(v[2]->specular, vbspec[e2]);
+ 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 (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]);
}
} else {
- GLfloat *vbindex = (GLfloat *)VB->IndexPtr[0]->data;
- SS_IND(v[0]->index, (GLuint) vbindex[e0]);
- SS_IND(v[1]->index, (GLuint) vbindex[e1]);
- SS_IND(v[2]->index, (GLuint) vbindex[e2]);
+ v[0]->index = saved_index[0];
+ v[1]->index = saved_index[1];
+ v[2]->index = saved_index[2];
}
}
}