radv/meta: generate position for blit shaders.

This generates the position info using the vertex shader.

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

diff --git a/src/amd/vulkan/radv_meta_blit.c b/src/amd/vulkan/radv_meta_blit.c
index a3256ab..cc8ca32 100644 (file)
--- a/src/amd/vulkan/radv_meta_blit.c
+++ b/src/amd/vulkan/radv_meta_blit.c
@@ -40,23 +40,22 @@ build_nir_vertex_shader(void)
        nir_builder_init_simple_shader(&b, NULL, MESA_SHADER_VERTEX, NULL);
        b.shader->info->name = ralloc_strdup(b.shader, "meta_blit_vs");
 
-       nir_variable *pos_in = nir_variable_create(b.shader, nir_var_shader_in,
-                                                  vec4, "a_pos");
-       pos_in->data.location = VERT_ATTRIB_GENERIC0;
        nir_variable *pos_out = nir_variable_create(b.shader, nir_var_shader_out,
                                                    vec4, "gl_Position");
        pos_out->data.location = VARYING_SLOT_POS;
-       nir_copy_var(&b, pos_out, pos_in);
 
        nir_variable *tex_pos_in = nir_variable_create(b.shader, nir_var_shader_in,
                                                       vec4, "a_tex_pos");
-       tex_pos_in->data.location = VERT_ATTRIB_GENERIC1;
+       tex_pos_in->data.location = VERT_ATTRIB_GENERIC0;
        nir_variable *tex_pos_out = nir_variable_create(b.shader, nir_var_shader_out,
                                                        vec4, "v_tex_pos");
        tex_pos_out->data.location = VARYING_SLOT_VAR0;
        tex_pos_out->data.interpolation = INTERP_MODE_SMOOTH;
        nir_copy_var(&b, tex_pos_out, tex_pos_in);
 
+       nir_ssa_def *outvec = radv_meta_gen_rect_vertices(&b);
+
+       nir_store_var(&b, pos_out, outvec, 0xf);
        return b.shader;
 }
 
@@ -238,17 +237,12 @@ meta_emit_blit(struct radv_cmd_buffer *cmd_buffer,
        struct radv_device *device = cmd_buffer->device;
        unsigned offset = 0;
        struct blit_vb_data {
-               float pos[2];
                float tex_coord[3];
        } vb_data[3];
 
        assert(src_image->samples == dest_image->samples);
        unsigned vb_size = 3 * sizeof(*vb_data);
        vb_data[0] = (struct blit_vb_data) {
-               .pos = {
-                       -1.0,
-                       -1.0,
-               },
                .tex_coord = {
                        (float)src_offset_0.x / (float)src_iview->extent.width,
                        (float)src_offset_0.y / (float)src_iview->extent.height,
@@ -257,10 +251,6 @@ meta_emit_blit(struct radv_cmd_buffer *cmd_buffer,
        };
 
        vb_data[1] = (struct blit_vb_data) {
-               .pos = {
-                       -1.0,
-                       1.0,
-               },
                .tex_coord = {
                        (float)src_offset_0.x / (float)src_iview->extent.width,
                        (float)src_offset_1.y / (float)src_iview->extent.height,
@@ -269,10 +259,6 @@ meta_emit_blit(struct radv_cmd_buffer *cmd_buffer,
        };
 
        vb_data[2] = (struct blit_vb_data) {
-               .pos = {
-                       1.0,
-                       -1.0,
-               },
                .tex_coord = {
                        (float)src_offset_1.x / (float)src_iview->extent.width,
                        (float)src_offset_0.y / (float)src_iview->extent.height,
@@ -769,25 +755,18 @@ radv_device_init_meta_blit_color(struct radv_device *device,
                        .pVertexBindingDescriptions = (VkVertexInputBindingDescription[]) {
                                {
                                        .binding = 0,
-                                       .stride = 5 * sizeof(float),
+                                       .stride = 3 * sizeof(float),
                                        .inputRate = VK_VERTEX_INPUT_RATE_VERTEX
                                },
                        },
-                       .vertexAttributeDescriptionCount = 2,
+                       .vertexAttributeDescriptionCount = 1,
                        .pVertexAttributeDescriptions = (VkVertexInputAttributeDescription[]) {
                                {
-                                       /* Position */
-                                       .location = 0,
-                                       .binding = 0,
-                                       .format = VK_FORMAT_R32G32_SFLOAT,
-                                       .offset = 0
-                               },
-                               {
                                        /* Texture Coordinate */
-                                       .location = 1,
+                                       .location = 0,
                                        .binding = 0,
                                        .format = VK_FORMAT_R32G32B32_SFLOAT,
-                                       .offset = 8
+                                       .offset = 0
                                }
                        }
                };
@@ -948,25 +927,18 @@ radv_device_init_meta_blit_depth(struct radv_device *device,
                .pVertexBindingDescriptions = (VkVertexInputBindingDescription[]) {
                        {
                                .binding = 0,
-                               .stride = 5 * sizeof(float),
+                               .stride = 3 * sizeof(float),
                                .inputRate = VK_VERTEX_INPUT_RATE_VERTEX
                        },
                },
-               .vertexAttributeDescriptionCount = 2,
+               .vertexAttributeDescriptionCount = 1,
                .pVertexAttributeDescriptions = (VkVertexInputAttributeDescription[]) {
                        {
-                               /* Position */
-                               .location = 0,
-                               .binding = 0,
-                               .format = VK_FORMAT_R32G32_SFLOAT,
-                               .offset = 0
-                       },
-                       {
                                /* Texture Coordinate */
-                               .location = 1,
+                               .location = 0,
                                .binding = 0,
                                .format = VK_FORMAT_R32G32B32_SFLOAT,
-                               .offset = 8
+                               .offset = 0,
                        }
                }
        };
@@ -1129,25 +1101,18 @@ radv_device_init_meta_blit_stencil(struct radv_device *device,
                .pVertexBindingDescriptions = (VkVertexInputBindingDescription[]) {
                        {
                                .binding = 0,
-                               .stride = 5 * sizeof(float),
+                               .stride = 3 * sizeof(float),
                                .inputRate = VK_VERTEX_INPUT_RATE_VERTEX
                        },
                },
-               .vertexAttributeDescriptionCount = 2,
+               .vertexAttributeDescriptionCount = 1,
                .pVertexAttributeDescriptions = (VkVertexInputAttributeDescription[]) {
                        {
-                               /* Position */
-                               .location = 0,
-                               .binding = 0,
-                               .format = VK_FORMAT_R32G32_SFLOAT,
-                               .offset = 0
-                       },
-                       {
                                /* Texture Coordinate */
-                               .location = 1,
+                               .location = 0,
                                .binding = 0,
                                .format = VK_FORMAT_R32G32B32_SFLOAT,
-                               .offset = 8
+                               .offset = 0
                        }
                }
        };