v3d: Stop advertising support for PIPE_CAP_*_COLOR_CLAMPED.

The GL frontend can lower away this deprecated GL feature for us.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8601>

src/broadcom/compiler/v3d_compiler.h

@@ -389,7 +389,6 @@ struct v3d_fs_key {
         bool sample_coverage;
         bool sample_alpha_to_coverage;
         bool sample_alpha_to_one;
-        bool clamp_color;
         bool shade_model_flat;
         /* Mask of which color render targets are present. */
         uint8_t cbufs;

src/broadcom/compiler/vir.c

@@ -960,9 +960,6 @@ v3d_nir_lower_gs_late(struct v3d_compile *c)
 static void
 v3d_nir_lower_vs_late(struct v3d_compile *c)
 {
-        if (c->vs_key->clamp_color)
-                NIR_PASS_V(c->s, nir_lower_clamp_color_outputs);
-
         if (c->key->ucp_enables) {
                 NIR_PASS_V(c->s, nir_lower_clip_vs, c->key->ucp_enables,
                            false, false, NULL);
@@ -977,9 +974,6 @@ v3d_nir_lower_vs_late(struct v3d_compile *c)
 static void
 v3d_nir_lower_fs_late(struct v3d_compile *c)
 {
-        if (c->fs_key->clamp_color)
-                NIR_PASS_V(c->s, nir_lower_clamp_color_outputs);
-
         /* In OpenGL the fragment shader can't read gl_ClipDistance[], but
          * Vulkan allows it, in which case the SPIR-V compiler will declare
          * VARING_SLOT_CLIP_DIST0 as compact array variable. Pass true as

src/broadcom/vulkan/v3dv_pipeline.c

@@ -1106,9 +1106,6 @@ pipeline_populate_v3d_fs_key(struct v3d_fs_key *key,
    key->is_lines = (topology >= PIPE_PRIM_LINES &&
                     topology <= PIPE_PRIM_LINE_STRIP);
 
-   /* Vulkan doesn't appear to specify (anv does the same) */
-   key->clamp_color = false;
-
    const VkPipelineColorBlendStateCreateInfo *cb_info =
       pCreateInfo->pColorBlendState;
 
@@ -1206,9 +1203,6 @@ pipeline_populate_v3d_vs_key(struct v3d_vs_key *key,
    const bool rba = p_stage->pipeline->device->features.robustBufferAccess;
    pipeline_populate_v3d_key(&key->base, p_stage, 0, rba);
 
-   /* Vulkan doesn't appear to specify (anv does the same) */
-   key->clamp_color = false;
-
    /* Vulkan specifies a point size per vertex, so true for if the prim are
     * points, like on ES2)
     */

src/gallium/drivers/v3d/v3d_program.c

@@ -552,7 +552,6 @@ v3d_update_compiled_fs(struct v3d_context *v3d, uint8_t prim_mode)
                          prim_mode <= PIPE_PRIM_LINE_STRIP);
         key->line_smoothing = (key->is_lines &&
                                v3d_line_smoothing_enabled(v3d));
-        key->clamp_color = v3d->rasterizer->base.clamp_fragment_color;
         if (v3d->blend->base.logicop_enable) {
                 key->logicop_func = v3d->blend->base.logicop_func;
         } else {
@@ -757,8 +756,6 @@ v3d_update_compiled_vs(struct v3d_context *v3d, uint8_t prim_mode)
                    sizeof(key->used_outputs));
         }
 
-        key->clamp_color = v3d->rasterizer->base.clamp_vertex_color;
-
         key->per_vertex_point_size =
                 (prim_mode == PIPE_PRIM_POINTS &&
                  v3d->rasterizer->base.point_size_per_vertex);

src/gallium/drivers/v3d/v3d_screen.c

@@ -109,9 +109,7 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 
         switch (param) {
                 /* Supported features (boolean caps). */
-        case PIPE_CAP_VERTEX_COLOR_CLAMPED:
         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
-        case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
         case PIPE_CAP_NPOT_TEXTURES:
         case PIPE_CAP_SHAREABLE_SHADERS:
@@ -261,6 +259,8 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
 
         case PIPE_CAP_ALPHA_TEST:
         case PIPE_CAP_TWO_SIDED_COLOR:
+        case PIPE_CAP_VERTEX_COLOR_CLAMPED:
+        case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
                 return 0;
 
         /* Geometry shaders */