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authorKeith Whitwell <keith@tungstengraphics.com>2006-03-02 20:16:34 +0000
committerKeith Whitwell <keith@tungstengraphics.com>2006-03-02 20:16:34 +0000
commitf4ab5654d0a460736465edb420f78297c4e2be3b (patch)
tree95f4df8addd81c0c37b962c8dd124ba45541ec27
parentda16813f432c5e328b5b2666d468f185c0678a98 (diff)
Add position_invarient support
-rw-r--r--src/mesa/tnl/t_vb_arbprogram.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/src/mesa/tnl/t_vb_arbprogram.c b/src/mesa/tnl/t_vb_arbprogram.c
index 3206892d5b..7472b51d70 100644
--- a/src/mesa/tnl/t_vb_arbprogram.c
+++ b/src/mesa/tnl/t_vb_arbprogram.c
@@ -1282,7 +1282,8 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
m->nr_inputs = m->nr_outputs = 0;
for (i = 0; i < _TNL_ATTRIB_MAX; i++) {
- if (program->Base.InputsRead & (1<<i)) {
+ if (program->Base.InputsRead & (1<<i) ||
+ (i == VERT_ATTRIB_POS && program->IsPositionInvariant)) {
GLuint j = m->nr_inputs++;
m->input[j].idx = i;
m->input[j].data = (GLfloat *)m->VB->AttribPtr[i]->data;
@@ -1293,7 +1294,8 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
}
for (i = 0; i < VERT_RESULT_MAX; i++) {
- if (program->Base.OutputsWritten & (1 << i)) {
+ if (program->Base.OutputsWritten & (1 << i) ||
+ (i == VERT_RESULT_HPOS && program->IsPositionInvariant)) {
GLuint j = m->nr_outputs++;
m->output[j].idx = i;
m->output[j].data = (GLfloat *)m->attribs[i].data;
@@ -1316,6 +1318,7 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
STRIDE_F(m->input[j].data, m->input[j].stride);
}
+
if (p->compiled_func) {
call_func( p, m );
}
@@ -1326,6 +1329,15 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
}
}
+ /* If the program is position invariant, multiply the input position
+ * by the MVP matrix and store in the vertex position result register.
+ */
+ if (program->IsPositionInvariant) {
+ TRANSFORM_POINT( m->File[0][REG_OUT0+0],
+ ctx->_ModelProjectMatrix.m,
+ m->File[0][REG_IN0+0]);
+ }
+
for (j = 0; j < m->nr_outputs; j++) {
GLuint idx = REG_OUT0 + m->output[j].idx;
m->output[j].data[0] = m->File[0][idx][0];
@@ -1334,6 +1346,7 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
m->output[j].data[3] = m->File[0][idx][3];
m->output[j].data += 4;
}
+
}
/* Setup the VB pointers so that the next pipeline stages get
@@ -1350,6 +1363,8 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
VB->ClipPtr->count = VB->Count;
outputs = program->Base.OutputsWritten;
+ if (program->IsPositionInvariant)
+ outputs |= (1<<VERT_RESULT_HPOS);
if (outputs & (1<<VERT_RESULT_COL0)) {
VB->ColorPtr[0] = &m->attribs[VERT_RESULT_COL0];