diff options
| author | Keith Whitwell <keith@tungstengraphics.com> | 2005-05-11 15:17:31 +0000 |
|---|---|---|
| committer | Keith Whitwell <keith@tungstengraphics.com> | 2005-05-11 15:17:31 +0000 |
| commit | 363d0bcf01b1e7b77c5a8d317bb0c6df8697a836 (patch) | |
| tree | c4de2ee3f9a8a0b4f89b7015937e1470bb156bbf /src/mesa/swrast | |
| parent | e490242b9aeb50bd96fed7a9afbf529295a8ac0e (diff) | |
Test for texcoord[3] == zero before dividing. Not so sure about this
test - if texcoord[3] is zero, we'd probably be fine except for an
ASSERT in IROUND_POS() which gets triggered by the inf values
created.
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_nvfragprog.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 1cd1bdaf49..bb9c986afc 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -1218,9 +1218,15 @@ execute_program( GLcontext *ctx, { GLfloat texcoord[4], color[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - texcoord[0] /= texcoord[3]; - texcoord[1] /= texcoord[3]; - texcoord[2] /= texcoord[3]; + /* Not so sure about this test - if texcoord[3] is + * zero, we'd probably be fine except for an ASSERT in + * IROUND_POS() which gets triggered by the inf values created. + */ + if (texcoord[3] != 0.0) { + texcoord[0] /= texcoord[3]; + texcoord[1] /= texcoord[3]; + texcoord[2] /= texcoord[3]; + } /* Note: LOD=0 */ fetch_texel( ctx, texcoord, 0.0F, inst->TexSrcUnit, color ); store_vector4( inst, machine, color ); @@ -1231,7 +1237,8 @@ execute_program( GLcontext *ctx, { GLfloat texcoord[4], color[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - if (inst->TexSrcIdx != TEXTURE_CUBE_INDEX) { + if (inst->TexSrcIdx != TEXTURE_CUBE_INDEX && + texcoord[3] != 0.0) { texcoord[0] /= texcoord[3]; texcoord[1] /= texcoord[3]; texcoord[2] /= texcoord[3]; @@ -1417,6 +1424,10 @@ _swrast_exec_fragment_program( GLcontext *ctx, struct sw_span *span ) ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ + if (program->Parameters) { + _mesa_load_state_parameters(ctx, program->Parameters); + } + for (i = 0; i < span->end; i++) { if (span->array->mask[i]) { init_machine(ctx, &ctx->FragmentProgram.Machine, |