gallium: make sure to set the SamplersUsed field for bitmap/drawpixels shaders

Also, make sure that field is copied/updated in the program clone and combine functions.
Without this we weren't getting SAMP declarations in the TGSI shaders.

4 files changed, 5 insertions, 0 deletions

diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c
index 09a8494bd3..3069b04836 100644
--- a/src/mesa/shader/program.c
+++ b/src/mesa/shader/program.c
@@ -361,6 +361,7 @@ _mesa_clone_program(GLcontext *ctx, const struct gl_program *prog)
                            prog->NumInstructions);
    clone->InputsRead = prog->InputsRead;
    clone->OutputsWritten = prog->OutputsWritten;
+   clone->SamplersUsed = prog->SamplersUsed;
    memcpy(clone->TexturesUsed, prog->TexturesUsed, sizeof(prog->TexturesUsed));
 
    if (prog->Parameters)
@@ -537,6 +538,7 @@ _mesa_combine_programs(GLcontext *ctx,
       }
       newProg->InputsRead = progA->InputsRead | inputsB;
       newProg->OutputsWritten = progB->OutputsWritten;
+      newProg->SamplersUsed = progA->SamplersUsed | progB->SamplersUsed;
    }
    else {
       /* vertex program */
diff --git a/src/mesa/state_tracker/st_atom_pixeltransfer.c b/src/mesa/state_tracker/st_atom_pixeltransfer.c
index 1e3effd549..6410e7cb24 100644
--- a/src/mesa/state_tracker/st_atom_pixeltransfer.c
+++ b/src/mesa/state_tracker/st_atom_pixeltransfer.c
@@ -130,6 +130,7 @@ get_pixel_transfer_program(GLcontext *ctx, const struct state_key *key)
    ic++;
    fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0);
    fp->Base.OutputsWritten = (1 << FRAG_RESULT_COLR);
+   fp->Base.SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */
 
    /* MAD colorTemp, colorTemp, scale, bias; */
    if (key->scaleAndBias) {
diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c
index 0872f2bd28..59f3c385df 100644
--- a/src/mesa/state_tracker/st_cb_bitmap.c
+++ b/src/mesa/state_tracker/st_cb_bitmap.c
@@ -148,6 +148,7 @@ make_bitmap_fragment_program(GLcontext *ctx)
 
    p->InputsRead = FRAG_BIT_TEX0;
    p->OutputsWritten = 0x0;
+   p->SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */
 
    stfp = (struct st_fragment_program *) p;
    stfp->Base.UsesKill = GL_TRUE;
diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c
index c7796cfb6a..c57e05312a 100644
--- a/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -212,6 +212,7 @@ make_fragment_shader_z(struct st_context *st)
 
    p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0;
    p->OutputsWritten = (1 << FRAG_RESULT_COLR) | (1 << FRAG_RESULT_DEPR);
+   p->SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */
 
    stfp = (struct st_fragment_program *) p;
    st_translate_fragment_program(st, stfp, NULL);