SuperTuxKart 1.5 upstream source (from official release tarball)

data/shaders/ge_shaders/deferred_pbr.frag

@@ -0,0 +1,33 @@
+layout (input_attachment_index = 0, binding = 0) uniform subpassInput u_color;
+layout (input_attachment_index = 1, binding = 1) uniform subpassInput u_normal;
+layout (input_attachment_index = 2, binding = 2) uniform subpassInput u_depth;
+
+layout(location = 0) out vec4 o_color;
+
+layout(push_constant) uniform Constants
+{
+    int m_fullscreen_light_count;
+} u_push_constants;
+
+#include "utils/unproject_position.glsl"
+#include "utils/handle_pbr.glsl"
+#include "../utils/decodeNormal.frag"
+
+void main()
+{
+    float depth = subpassLoad(u_depth).x;
+    if (!u_has_skybox && depth == 1.0)
+        discard;
+    vec3 diffuse_color = subpassLoad(u_color).xyz;
+    vec3 pbr = vec3(subpassLoad(u_normal).zw, subpassLoad(u_color).w);
+    vec3 world_normal = DecodeNormal(subpassLoad(u_normal).xy);
+    vec3 xpos = getPosFromUVDepth(vec3(gl_FragCoord.xy, depth),
+        u_camera.m_viewport, u_camera.m_inverse_projection_matrix);
+    vec3 eyedir = -normalize(xpos);
+    vec3 normal = (u_camera.m_view_matrix * vec4(world_normal, 0.0)).xyz;
+    vec3 hdr = handlePBRDeferred(diffuse_color, pbr, world_normal, eyedir,
+        normal, 1.0 - pbr.x);
+    hdr += accumulateLights(u_push_constants.m_fullscreen_light_count,
+        diffuse_color, normal, xpos, eyedir, 1.0 - pbr.x, pbr.y);
+    o_color = vec4(hdr, 1.0);
+}