virtualx-engine/servers/rendering/renderer_rd/shaders/effects/vrs.glsl
Bastiaan Olij d139131aab Adding Variable Rate Shading support to Godot
Improve GI renderer and add VRS support
Implement render device has_feature and move subgroup settings to limit_get
2022-07-17 15:42:24 +10:00

72 lines
1.5 KiB
GLSL

#[vertex]
#version 450
#VERSION_DEFINES
#ifdef MULTIVIEW
#ifdef has_VK_KHR_multiview
#extension GL_EXT_multiview : enable
#define ViewIndex gl_ViewIndex
#else // has_VK_KHR_multiview
#define ViewIndex 0
#endif // has_VK_KHR_multiview
#endif //MULTIVIEW
#ifdef MULTIVIEW
layout(location = 0) out vec3 uv_interp;
#else
layout(location = 0) out vec2 uv_interp;
#endif
void main() {
vec2 base_arr[4] = vec2[](vec2(0.0, 0.0), vec2(0.0, 1.0), vec2(1.0, 1.0), vec2(1.0, 0.0));
uv_interp.xy = base_arr[gl_VertexIndex];
#ifdef MULTIVIEW
uv_interp.z = ViewIndex;
#endif
gl_Position = vec4(uv_interp.xy * 2.0 - 1.0, 0.0, 1.0);
}
#[fragment]
#version 450
#VERSION_DEFINES
#ifdef MULTIVIEW
#ifdef has_VK_KHR_multiview
#extension GL_EXT_multiview : enable
#define ViewIndex gl_ViewIndex
#else // has_VK_KHR_multiview
#define ViewIndex 0
#endif // has_VK_KHR_multiview
#endif //MULTIVIEW
#ifdef MULTIVIEW
layout(location = 0) in vec3 uv_interp;
layout(set = 0, binding = 0) uniform sampler2DArray source_color;
#else /* MULTIVIEW */
layout(location = 0) in vec2 uv_interp;
layout(set = 0, binding = 0) uniform sampler2D source_color;
#endif /* MULTIVIEW */
layout(location = 0) out uint frag_color;
void main() {
#ifdef MULTIVIEW
vec3 uv = uv_interp;
#else
vec2 uv = uv_interp;
#endif
#ifdef MULTIVIEW
vec4 color = textureLod(source_color, uv, 0.0);
#else /* MULTIVIEW */
vec4 color = textureLod(source_color, uv, 0.0);
#endif /* MULTIVIEW */
// See if we can change the sampler to one that returns int...
frag_color = uint(color.r * 256.0);
}