Shadow map rendering optimization

-All shadow rendering is done with raster now (no compute)
-All shadow rendering is done by rendering directly to the shadow atlas
-Improved how buffer clearing is done to optimize the above.
-Ability to set shadows as 16 bits.

1 files changed, 18 insertions, 17 deletions

diff --git a/servers/rendering/renderer_rd/effects_rd.cpp b/servers/rendering/renderer_rd/effects_rd.cpp
index 6e1d61ff94..27d6cb086d 100644
--- a/servers/rendering/renderer_rd/effects_rd.cpp
+++ b/servers/rendering/renderer_rd/effects_rd.cpp
@@ -702,27 +702,24 @@ void EffectsRD::make_mipmap(RID p_source_rd_texture, RID p_dest_texture, const S
 	RD::get_singleton()->compute_list_end();
 }
 
-void EffectsRD::copy_cubemap_to_dp(RID p_source_rd_texture, RID p_dest_texture, const Rect2i &p_rect, float p_z_near, float p_z_far, float p_bias, bool p_dp_flip) {
+void EffectsRD::copy_cubemap_to_dp(RID p_source_rd_texture, RID p_dst_framebuffer, const Rect2 &p_rect, float p_z_near, float p_z_far, bool p_dp_flip) {
 	CopyToDPPushConstant push_constant;
-	push_constant.screen_size[0] = p_rect.size.x;
-	push_constant.screen_size[1] = p_rect.size.y;
-	push_constant.dest_offset[0] = p_rect.position.x;
-	push_constant.dest_offset[1] = p_rect.position.y;
-	push_constant.bias = p_bias;
+	push_constant.screen_rect[0] = p_rect.position.x;
+	push_constant.screen_rect[1] = p_rect.position.y;
+	push_constant.screen_rect[2] = p_rect.size.width;
+	push_constant.screen_rect[3] = p_rect.size.height;
 	push_constant.z_far = p_z_far;
 	push_constant.z_near = p_z_near;
 	push_constant.z_flip = p_dp_flip;
 
-	int32_t x_groups = (p_rect.size.width - 1) / 8 + 1;
-	int32_t y_groups = (p_rect.size.height - 1) / 8 + 1;
+	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(p_dst_framebuffer, RD::INITIAL_ACTION_DROP, RD::FINAL_ACTION_DISCARD, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_READ);
+	RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, cube_to_dp.pipeline.get_render_pipeline(RD::INVALID_ID, RD::get_singleton()->framebuffer_get_format(p_dst_framebuffer)));
+	RD::get_singleton()->draw_list_bind_uniform_set(draw_list, _get_uniform_set_from_texture(p_source_rd_texture), 0);
+	RD::get_singleton()->draw_list_bind_index_array(draw_list, index_array);
 
-	RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
-	RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, cube_to_dp.pipeline);
-	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, _get_compute_uniform_set_from_texture(p_source_rd_texture), 0);
-	RD::get_singleton()->compute_list_bind_uniform_set(compute_list, _get_uniform_set_from_image(p_dest_texture), 1);
-	RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(CopyToDPPushConstant));
-	RD::get_singleton()->compute_list_dispatch(compute_list, x_groups, y_groups, 1);
-	RD::get_singleton()->compute_list_end();
+	RD::get_singleton()->draw_list_set_push_constant(draw_list, &push_constant, sizeof(CopyToDPPushConstant));
+	RD::get_singleton()->draw_list_draw(draw_list, true);
+	RD::get_singleton()->draw_list_end();
 }
 
 void EffectsRD::tonemapper(RID p_source_color, RID p_dst_framebuffer, const TonemapSettings &p_settings) {
@@ -1678,8 +1675,12 @@ EffectsRD::EffectsRD() {
 		cube_to_dp.shader.initialize(copy_modes);
 
 		cube_to_dp.shader_version = cube_to_dp.shader.version_create();
-
-		cube_to_dp.pipeline = RD::get_singleton()->compute_pipeline_create(cube_to_dp.shader.version_get_shader(cube_to_dp.shader_version, 0));
+		RID shader = cube_to_dp.shader.version_get_shader(cube_to_dp.shader_version, 0);
+		RD::PipelineDepthStencilState dss;
+		dss.enable_depth_test = true;
+		dss.depth_compare_operator = RD::COMPARE_OP_ALWAYS;
+		dss.enable_depth_write = true;
+		cube_to_dp.pipeline.setup(shader, RD::RENDER_PRIMITIVE_TRIANGLES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), dss, RD::PipelineColorBlendState(), 0);
 	}
 
 	{