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authorMarkus Amsler <markus.amsler@oribi.org>2008-02-27 02:06:17 +0100
committerJohn Doe <glisse@freedesktop.org>2008-02-27 02:06:17 +0100
commitc34b024cf49f3fc06271d561a4069c77d7b65c48 (patch)
tree4e6e53a1a179a76accd7586b9ad9dbbb72f8cc6b
parent12a4a74e94cbea491a35e11bd7a9f809df5085dc (diff)
r300: add artificial output to match fragment program input
-rw-r--r--src/mesa/drivers/dri/r300/r300_context.h1
-rw-r--r--src/mesa/drivers/dri/r300/r300_vertprog.c34
2 files changed, 28 insertions, 7 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index ab0d33b905..993aa51990 100644
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -604,6 +604,7 @@ extern int hw_tcl_on;
struct r300_vertex_program_key {
GLuint InputsRead;
GLuint OutputsWritten;
+ GLuint OutputsAdded;
};
struct r300_vertex_program {
diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.c
index e6f216e403..c1329f13f7 100644
--- a/src/mesa/drivers/dri/r300/r300_vertprog.c
+++ b/src/mesa/drivers/dri/r300/r300_vertprog.c
@@ -1292,6 +1292,19 @@ static void r300TranslateVertexShader(struct r300_vertex_program *vp,
}
}
+ /* Some outputs may be artificially added, to match the inputs
+ of the fragment program. Blank the outputs here. */
+ for (i = 0; i < VERT_RESULT_MAX; i++) {
+ if (vp->key.OutputsAdded & (1 << i)) {
+ inst[0] = MAKE_VSF_OP(R300_VPI_OUT_OP_ADD, vp->outputs[i],
+ VSF_FLAG_ALL, VSF_OUT_CLASS_RESULT);
+ inst[1] = ZERO_SRC_0;
+ inst[2] = ZERO_SRC_0;
+ inst[3] = ZERO_SRC_0;
+ inst += 4;
+ }
+ }
+
vp->program.length = (inst - vp->program.body.i);
if (vp->program.length >= VSF_MAX_FRAGMENT_LENGTH) {
vp->program.length = 0;
@@ -1486,6 +1499,15 @@ static struct r300_vertex_program *build_program(struct r300_vertex_program_key
return vp;
}
+static void add_outputs(struct r300_vertex_program_key *key, GLint vert)
+{
+ if (key->OutputsWritten & (1 << vert))
+ return;
+
+ key->OutputsWritten |= 1 << vert;
+ key->OutputsAdded |= 1 << vert;
+}
+
void r300SelectVertexShader(r300ContextPtr r300)
{
GLcontext *ctx = ctx = r300->radeon.glCtx;
@@ -1517,27 +1539,25 @@ void r300SelectVertexShader(r300ContextPtr r300)
wanted_key.InputsRead = vpc->mesa_program.Base.InputsRead;
wanted_key.OutputsWritten = vpc->mesa_program.Base.OutputsWritten;
- wanted_key.OutputsWritten |= 1 << VERT_RESULT_HPOS;
+ add_outputs(&wanted_key, VERT_RESULT_HPOS);
if (InputsRead & FRAG_BIT_COL0) {
- wanted_key.OutputsWritten |= 1 << VERT_RESULT_COL0;
+ add_outputs(&wanted_key, VERT_RESULT_COL0);
}
- if ((InputsRead & FRAG_BIT_COL1)) {
- wanted_key.OutputsWritten |= 1 << VERT_RESULT_COL1;
+ if (InputsRead & FRAG_BIT_COL1) {
+ add_outputs(&wanted_key, VERT_RESULT_COL1);
}
for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
if (InputsRead & (FRAG_BIT_TEX0 << i)) {
- wanted_key.OutputsWritten |=
- 1 << (VERT_RESULT_TEX0 + i);
+ add_outputs(&wanted_key, VERT_RESULT_TEX0 + i);
}
}
if (vpc->mesa_program.IsPositionInvariant) {
/* we wan't position don't we ? */
wanted_key.InputsRead |= (1 << VERT_ATTRIB_POS);
- wanted_key.OutputsWritten |= (1 << VERT_RESULT_HPOS);
}
for (vp = vpc->progs; vp; vp = vp->next)