host_shaders: Add shaders to present to the swapchain

src/video_core/host_shaders/CMakeLists.txt

@@ -8,6 +8,8 @@ set(SHADER_FILES
     opengl_present.frag
     opengl_present.vert
     pitch_unswizzle.comp
+    vulkan_present.frag
+    vulkan_present.vert
 )
 
 find_program(GLSLANGVALIDATOR "glslangValidator" REQUIRED)

src/video_core/host_shaders/vulkan_present.frag

@@ -0,0 +1,15 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#version 460 core
+
+layout (location = 0) in vec2 frag_tex_coord;
+
+layout (location = 0) out vec4 color;
+
+layout (binding = 1) uniform sampler2D color_texture;
+
+void main() {
+    color = texture(color_texture, frag_tex_coord);
+}

src/video_core/host_shaders/vulkan_present.vert

@@ -0,0 +1,19 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#version 460 core
+
+layout (location = 0) in vec2 vert_position;
+layout (location = 1) in vec2 vert_tex_coord;
+
+layout (location = 0) out vec2 frag_tex_coord;
+
+layout (set = 0, binding = 0) uniform MatrixBlock {
+    mat4 modelview_matrix;
+};
+
+void main() {
+    gl_Position = modelview_matrix * vec4(vert_position, 0.0, 1.0);
+    frag_tex_coord = vert_tex_coord;
+}