Merge pull request #60901 from BastiaanOlij/vrs

Adding Variable Rate Shading support to Godot

1 files changed, 75 insertions, 0 deletions

diff --git a/servers/rendering/renderer_rd/effects/vrs.h b/servers/rendering/renderer_rd/effects/vrs.h
new file mode 100644
index 0000000000..0f2bdd31b6
--- /dev/null
+++ b/servers/rendering/renderer_rd/effects/vrs.h
@@ -0,0 +1,75 @@
+/*************************************************************************/
+/*  vrs.h                                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef VRS_RD_H
+#define VRS_RD_H
+
+#include "servers/rendering/renderer_rd/pipeline_cache_rd.h"
+#include "servers/rendering/renderer_rd/shaders/effects/vrs.glsl.gen.h"
+#include "servers/rendering/renderer_scene_render.h"
+
+#include "servers/rendering_server.h"
+
+namespace RendererRD {
+
+class VRS {
+private:
+	enum VRSMode {
+		VRS_DEFAULT,
+		VRS_MULTIVIEW,
+		VRS_MAX,
+	};
+
+	/* we have no push constant here (yet)
+	struct VRSPushConstant {
+
+	};
+	*/
+
+	struct VRSShader {
+		// VRSPushConstant push_constant;
+		VrsShaderRD shader;
+		RID shader_version;
+		PipelineCacheRD pipelines[VRS_MAX];
+	} vrs_shader;
+
+public:
+	VRS();
+	~VRS();
+
+	void copy_vrs(RID p_source_rd_texture, RID p_dest_framebuffer, bool p_multiview = false);
+
+	void create_vrs_texture(const int p_base_width, const int p_base_height, const uint32_t p_view_count, RID &p_vrs_texture, RID &p_vrs_fb);
+	void update_vrs_texture(RID p_vrs_fb, RID p_render_target);
+};
+
+} // namespace RendererRD
+
+#endif // !VRS_RD_H