diff options
Diffstat (limited to 'src/mesa/swrast/s_fragprog.c')
| -rw-r--r-- | src/mesa/swrast/s_fragprog.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c index 9ac33a26a6..d31da4c402 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] += 0.5F; + wpos[1] += 0.5F; + } + /* Setup pointer to input attributes */ machine->Attribs = span->array->attribs; @@ -162,7 +172,7 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine, /* if running a GLSL program (not ARB_fragment_program) */ if (ctx->Shader.CurrentProgram) { /* Store front/back facing value */ - machine->Attribs[FRAG_ATTRIB_FACE][col][0] = 1.0 - span->facing; + machine->Attribs[FRAG_ATTRIB_FACE][col][0] = 1.0F - span->facing; } machine->CurElement = col; |