diff options
author | Eric Anholt <[email protected]> | 2010-01-26 12:43:43 -0800 |
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committer | Eric Anholt <[email protected]> | 2010-01-26 13:30:26 -0800 |
commit | 11c581c6ce0b09dc4203a7f93ebb8f76357f19be (patch) | |
tree | 6c1efd4a34ec21c2ffb3101a5c4828a588f0335e /src/mesa/swrast/s_fragprog.c | |
parent | dea98eb792b5a0637ff2067d9bfe2f666f01423e (diff) |
swrast: Implement ARB_fragment_coord_conventions but don't enable.
This brings swrast's support up to the state of gallium, and fixes the
default center behavior of fragment.position.xy in piglit
fp-arb-fragment-coord-conventions-none.
The extension is not enabled currently because the GLSL part of the
extension isn't supported, so piglit
glsl-arb-fragment-coord-conventions-define fails as would any serious
test of the GLSL part.
Diffstat (limited to 'src/mesa/swrast/s_fragprog.c')
-rw-r--r-- | src/mesa/swrast/s_fragprog.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c index 9ac33a26a65..1c6492cc8fa 100644 --- a/src/mesa/swrast/s_fragprog.c +++ b/src/mesa/swrast/s_fragprog.c @@ -144,12 +144,22 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine, const struct gl_fragment_program *program, const SWspan *span, GLuint col) { + GLfloat *wpos = span->array->attribs[FRAG_ATTRIB_WPOS][col]; + if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { /* Clear temporary registers (undefined for ARB_f_p) */ _mesa_bzero(machine->Temporaries, MAX_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); } + /* ARB_fragment_coord_conventions */ + if (program->OriginUpperLeft) + wpos[1] = ctx->DrawBuffer->Height - 1 - wpos[1]; + if (!program->PixelCenterInteger) { + wpos[0] += 0.5; + wpos[1] += 0.5; + } + /* Setup pointer to input attributes */ machine->Attribs = span->array->attribs; |