zink: support NV_representative_fragment_test

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37081>

docs/relnotes/new_features.txt

@@ -21,3 +21,4 @@ VK_KHR_maintenance9 on panvk
 VK_AMD_buffer_marker on NVK
 VK_EXT_ycbcr_2plane_444_formats on radv
 Removed VDPAU frontend
+GL_NV_representative_fragment_test on zink

src/gallium/drivers/zink/zink_batch.c

@@ -593,6 +593,11 @@ zink_start_batch(struct zink_context *ctx)
       VKCTX(CmdSetAttachmentFeedbackLoopEnableEXT)(ctx->bs->reordered_cmdbuf, 0);
       VKCTX(CmdSetAttachmentFeedbackLoopEnableEXT)(ctx->bs->unsynchronized_cmdbuf, 0);
    }
+   if (screen->info.dynamic_state3_feats.extendedDynamicState3RepresentativeFragmentTestEnable) {
+      VKCTX(CmdSetRepresentativeFragmentTestEnableNV)(ctx->bs->cmdbuf, 0);
+      VKCTX(CmdSetRepresentativeFragmentTestEnableNV)(ctx->bs->reordered_cmdbuf, 0);
+      VKCTX(CmdSetRepresentativeFragmentTestEnableNV)(ctx->bs->unsynchronized_cmdbuf, 0);
+   }
 }
 
 /* common operations to run post submit; split out for clarity */

src/gallium/drivers/zink/zink_device_info.py

@@ -196,6 +196,7 @@ EXTENSIONS = [
               features=True,
               conditions=["$feats.vertexAttributeInstanceRateDivisor"]),
     Extension("VK_EXT_calibrated_timestamps"),
+    Extension("VK_NV_representative_fragment_test"),
     Extension("VK_NV_linear_color_attachment",
               alias="linear_color",
               features=True),

src/gallium/drivers/zink/zink_pipeline.c

@@ -264,6 +264,8 @@ zink_create_gfx_pipeline(struct zink_screen *screen,
             }
          }
       }
+      if (screen->info.dynamic_state3_feats.extendedDynamicState3RepresentativeFragmentTestEnable)
+         dynamicStateEnables[state_count++] = VK_DYNAMIC_STATE_REPRESENTATIVE_FRAGMENT_TEST_ENABLE_NV;
    }
    if (screen->info.have_EXT_color_write_enable)
       dynamicStateEnables[state_count++] = VK_DYNAMIC_STATE_COLOR_WRITE_ENABLE_EXT;
@@ -754,6 +756,8 @@ create_gfx_pipeline_library(struct zink_screen *screen, struct zink_shader_objec
       dynamicStateEnables[state_count++] = VK_DYNAMIC_STATE_LINE_STIPPLE_ENABLE_EXT;
    if (!screen->driver_workarounds.no_linestipple)
       dynamicStateEnables[state_count++] = VK_DYNAMIC_STATE_LINE_STIPPLE_EXT;
+   if (screen->info.dynamic_state3_feats.extendedDynamicState3RepresentativeFragmentTestEnable)
+      dynamicStateEnables[state_count++] = VK_DYNAMIC_STATE_REPRESENTATIVE_FRAGMENT_TEST_ENABLE_NV;
    assert(state_count < ARRAY_SIZE(dynamicStateEnables));
 
    VkPipelineDynamicStateCreateInfo pipelineDynamicStateCreateInfo = {0};

src/gallium/drivers/zink/zink_screen.c

@@ -778,6 +778,7 @@ zink_init_screen_caps(struct zink_screen *screen)
    caps->allow_glthread_buffer_subdata_opt = true;
    caps->nir_samplers_as_deref = true;
    caps->call_finalize_nir_in_linker = true;
+   caps->representative_fragment_test = screen->info.dynamic_state3_feats.extendedDynamicState3RepresentativeFragmentTestEnable;
 
    caps->draw_vertex_state = screen->info.have_EXT_vertex_input_dynamic_state;
 

src/gallium/drivers/zink/zink_state.c

@@ -683,6 +683,7 @@ zink_bind_rasterizer_state(struct pipe_context *pctx, void *cso)
    bool clip_halfz = ctx->rast_state ? ctx->rast_state->hw_state.clip_halfz : false;
    bool rasterizer_discard = ctx->rast_state ? ctx->rast_state->base.rasterizer_discard : false;
    bool half_pixel_center = ctx->rast_state ? ctx->rast_state->base.half_pixel_center : true;
+   bool representative_fragment_test = ctx->rast_state ? ctx->rast_state->base.representative_fragment_test : false;
    float line_width = ctx->rast_state ? ctx->rast_state->base.line_width : 1.0;
    ctx->rast_state = cso;
 
@@ -731,6 +732,9 @@ zink_bind_rasterizer_state(struct pipe_context *pctx, void *cso)
 #undef STATE_CHECK
       }
 
+      if (representative_fragment_test != ctx->rast_state->base.representative_fragment_test)
+         VKCTX(CmdSetRepresentativeFragmentTestEnableNV)(ctx->bs->cmdbuf, ctx->rast_state->base.representative_fragment_test);
+
       if (fabs(ctx->rast_state->base.line_width - line_width) > FLT_EPSILON)
          ctx->line_width_changed = true;