radv/meta: move fast clear to generate vertices in shader.

Avoids having to setup vertex buffers.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/amd/vulkan/radv_meta_fast_clear.c b/src/amd/vulkan/radv_meta_fast_clear.c
index 3393bcb25eac432aa441a35b25f2d3a81a30c0e6..5f792f1f8946af6b20bda083358328ec12b9f216 100644 (file)
--- a/src/amd/vulkan/radv_meta_fast_clear.c
+++ b/src/amd/vulkan/radv_meta_fast_clear.c
@@ -28,35 +28,26 @@
 #include "radv_private.h"
 #include "nir/nir_builder.h"
 #include "sid.h"
-/**
- * Vertex attributes used by all pipelines.
- */
-struct vertex_attrs {
-       float position[2]; /**< 3DPRIM_RECTLIST */
-};
 
-/* passthrough vertex shader */
+/* vertex shader that generates vertices */
 static nir_shader *
 build_nir_vs(void)
 {
        const struct glsl_type *vec4 = glsl_vec4_type();
 
        nir_builder b;
-       nir_variable *a_position;
        nir_variable *v_position;
 
        nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_VERTEX, NULL);
        b.shader->info->name = ralloc_strdup(b.shader, "meta_fast_clear_vs");
 
-       a_position = nir_variable_create(b.shader, nir_var_shader_in, vec4,
-                                        "a_position");
-       a_position->data.location = VERT_ATTRIB_GENERIC0;
+       nir_ssa_def *outvec = radv_meta_gen_rect_vertices(&b);
 
        v_position = nir_variable_create(b.shader, nir_var_shader_out, vec4,
                                         "gl_Position");
        v_position->data.location = VARYING_SLOT_POS;
 
-       nir_copy_var(&b, v_position, a_position);
+       nir_store_var(&b, v_position, outvec, 0xf);
 
        return b.shader;
 }
@@ -154,24 +145,8 @@ create_pipeline(struct radv_device *device,
 
        const VkPipelineVertexInputStateCreateInfo vi_state = {
                .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
-               .vertexBindingDescriptionCount = 1,
-               .pVertexBindingDescriptions = (VkVertexInputBindingDescription[]) {
-                       {
-                               .binding = 0,
-                               .stride = sizeof(struct vertex_attrs),
-                               .inputRate = VK_VERTEX_INPUT_RATE_VERTEX
-                       },
-               },
-               .vertexAttributeDescriptionCount = 1,
-               .pVertexAttributeDescriptions = (VkVertexInputAttributeDescription[]) {
-                       {
-                               /* Position */
-                               .location = 0,
-                               .binding = 0,
-                               .format = VK_FORMAT_R32G32_SFLOAT,
-                               .offset = offsetof(struct vertex_attrs, position),
-                       },
-               }
+               .vertexBindingDescriptionCount = 0,
+               .vertexAttributeDescriptionCount = 0,
        };
 
        const VkPipelineInputAssemblyStateCreateInfo ia_state = {
@@ -364,43 +339,6 @@ emit_fast_clear_flush(struct radv_cmd_buffer *cmd_buffer,
 {
        struct radv_device *device = cmd_buffer->device;
        VkCommandBuffer cmd_buffer_h = radv_cmd_buffer_to_handle(cmd_buffer);
-       uint32_t offset;
-       const struct vertex_attrs vertex_data[3] = {
-               {
-                       .position = {
-                               -1.0,
-                               -1.0,
-                       },
-               },
-               {
-                       .position = {
-                               -1.0,
-                               1.0,
-                       },
-               },
-               {
-                       .position = {
-                               1.0,
-                               -1.0,
-                       },
-               },
-       };
-
-       radv_cmd_buffer_upload_data(cmd_buffer, sizeof(vertex_data), 16, vertex_data, &offset);
-       struct radv_buffer vertex_buffer = {
-               .device = device,
-               .size = sizeof(vertex_data),
-               .bo = cmd_buffer->upload.upload_bo,
-               .offset = offset,
-       };
-
-       VkBuffer vertex_buffer_h = radv_buffer_to_handle(&vertex_buffer);
-
-       radv_CmdBindVertexBuffers(cmd_buffer_h,
-                                 /*firstBinding*/ 0,
-                                 /*bindingCount*/ 1,
-                                 (VkBuffer[]) { vertex_buffer_h },
-                                 (VkDeviceSize[]) { 0 });
 
        VkPipeline pipeline_h;
        if (fmask_decompress)
@@ -448,7 +386,7 @@ radv_fast_clear_flush_image_inplace(struct radv_cmd_buffer *cmd_buffer,
 
        assert(cmd_buffer->queue_family_index == RADV_QUEUE_GENERAL);
        radv_meta_save_pass(&saved_pass_state, cmd_buffer);
-       radv_meta_save_graphics_reset_vport_scissor(&saved_state, cmd_buffer);
+       radv_meta_save_graphics_reset_vport_scissor_novertex(&saved_state, cmd_buffer);
 
        for (uint32_t layer = 0; layer < layer_count; ++layer) {
                struct radv_image_view iview;