wip

src/video_core/host_shaders/CMakeLists.txt

@@ -71,6 +71,7 @@ set(SHADER_FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/smaa_neighborhood_blending.vert
     ${CMAKE_CURRENT_SOURCE_DIR}/smaa_neighborhood_blending.frag
     ${CMAKE_CURRENT_SOURCE_DIR}/ssaa.frag
+    ${CMAKE_CURRENT_SOURCE_DIR}/ssaa.vert
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_blit_depth_stencil.frag
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_color_clear.frag
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_color_clear.vert

src/video_core/host_shaders/ssaa.frag

@@ -10,7 +10,6 @@
 #define BINDING_COLOR_TEXTURE 0
 #endif
 
-layout (location = 0) in vec2 texcoord;
 layout (location = 0) out vec4 frag_color;
 layout (binding = BINDING_COLOR_TEXTURE) uniform sampler2DMS input_texture;
 

src/video_core/host_shaders/ssaa.vert

@@ -0,0 +1,21 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#version 450
+
+#ifdef VULKAN
+#define VERTEX_ID gl_VertexIndex
+#define FLIPY 1
+#else // ^^^ Vulkan ^^^ // vvv OpenGL vvv
+#define VERTEX_ID gl_VertexID
+#define FLIPY -1
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+#endif
+
+void main() {
+    float x = float((VERTEX_ID & 1) << 2);
+    float y = float((VERTEX_ID & 2) << 1);
+    gl_Position = vec4(x - 1.0, FLIPY * (y - 1.0), 0.0, 1.0);
+}