diff options
| author | Markus Amsler <markus.amsler@oribi.org> | 2008-02-27 02:06:17 +0100 |
|---|---|---|
| committer | John Doe <glisse@freedesktop.org> | 2008-02-27 02:06:17 +0100 |
| commit | c34b024cf49f3fc06271d561a4069c77d7b65c48 (patch) | |
| tree | 4e6e53a1a179a76accd7586b9ad9dbbb72f8cc6b /src | |
| parent | 12a4a74e94cbea491a35e11bd7a9f809df5085dc (diff) | |
r300: add artificial output to match fragment program input
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_context.h | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_vertprog.c | 34 |
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) |