st/mesa: use uint-result for sampling stencil buffers

Otherwise, we end up mismatching the result-type and the sampler-type.

Fixes: 642125edd97 ("st/mesa: use uint-samplers for sampling stencil buffers")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3680>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3680>

diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c
index 55228e3b64d25bd7977ac19b3e3f194da6417dbd..2f2b98ecb6fed7a8a1ac296af097600cee31379f 100644 (file)
--- a/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -111,7 +111,8 @@
 
 static nir_ssa_def *
 sample_via_nir(nir_builder *b, nir_variable *texcoord,
-               const char *name, int sampler, enum glsl_base_type base_type)
+               const char *name, int sampler, enum glsl_base_type base_type,
+               nir_alu_type alu_type)
 {
    const struct glsl_type *sampler2D =
       glsl_sampler_type(GLSL_SAMPLER_DIM_2D, false, false, base_type);
@@ -127,7 +128,7 @@ sample_via_nir(nir_builder *b, nir_variable *texcoord,
    tex->op = nir_texop_tex;
    tex->sampler_dim = GLSL_SAMPLER_DIM_2D;
    tex->coord_components = 2;
-   tex->dest_type = nir_type_float;
+   tex->dest_type = alu_type;
    tex->src[0].src_type = nir_tex_src_texture_deref;
    tex->src[0].src = nir_src_for_ssa(&deref->dest.ssa);
    tex->src[1].src_type = nir_tex_src_sampler_deref;
@@ -164,7 +165,7 @@ make_drawpix_z_stencil_program_nir(struct st_context *st,
                              "gl_FragDepth");
       out->data.location = FRAG_RESULT_DEPTH;
       nir_ssa_def *depth = sample_via_nir(&b, texcoord, "depth", 0,
-                                          GLSL_TYPE_FLOAT);
+                                          GLSL_TYPE_FLOAT, nir_type_float);
       nir_store_var(&b, out, depth, 0x1);
 
       /* Also copy color */
@@ -186,7 +187,7 @@ make_drawpix_z_stencil_program_nir(struct st_context *st,
                              "gl_FragStencilRefARB");
       out->data.location = FRAG_RESULT_STENCIL;
       nir_ssa_def *stencil = sample_via_nir(&b, texcoord, "stencil", 1,
-                                            GLSL_TYPE_UINT);
+                                            GLSL_TYPE_UINT, nir_type_uint);
       nir_store_var(&b, out, stencil, 0x1);
    }