Move environment map handling to its own shader file

[libs/gl.git] / shaderlib / cooktorrance.glsl

diff --git a/shaderlib/cooktorrance.glsl b/shaderlib/cooktorrance.glsl
index ff1a56c7c237e240ebd7cb4c69df8a7ce24a36ba..e942b49ebab2bb5cb9e5553b004e5e112b36fe5e 100644 (file)
--- a/shaderlib/cooktorrance.glsl
+++ b/shaderlib/cooktorrance.glsl
@@ -1,5 +1,6 @@
 import msp_interface;
 import common;
+import environment;
 import shadow;
 
 struct PbrMaterialParameters
@@ -10,17 +11,18 @@ struct PbrMaterialParameters
        float roughness;
 };
 
-uniform PbrMaterial
+layout(set=1) uniform PbrMaterial
 {
        PbrMaterialParameters pbr_material;
+       float alpha_cutoff;
 };
 
-uniform sampler2D base_color_map;
-uniform sampler2D metalness_map;
-uniform sampler2D roughness_map;
-uniform sampler2D occlusion_map;
-uniform sampler2D emission_map;
-uniform sampler2D fresnel_lookup;
+layout(set=1) uniform sampler2D base_color_map;
+layout(set=1) uniform sampler2D metalness_map;
+layout(set=1) uniform sampler2D roughness_map;
+layout(set=1) uniform sampler2D occlusion_map;
+layout(set=1) uniform sampler2D emission_map;
+layout(set=1) uniform sampler2D fresnel_lookup;
 
 layout(constant_id=auto) const bool use_base_color_map = false;
 layout(constant_id=auto) const bool use_metalness_map = false;
@@ -29,6 +31,7 @@ layout(constant_id=auto) const bool use_occlusion_map = false;
 layout(constant_id=auto) const bool use_emission = false;
 layout(constant_id=auto) const bool use_emission_map = false;
 layout(constant_id=auto) const bool use_image_based_lighting = false;
+layout(constant_id=auto) const bool use_alpha_cutoff = false;
 
 #pragma MSP stage(fragment)
 virtual vec4 get_base_color()
@@ -173,10 +176,13 @@ vec3 cooktorrance_lighting(vec3 normal, vec3 look, vec3 base_color, float metaln
 
 void main()
 {
+       vec4 base_color = get_base_color();
+       if(use_alpha_cutoff && base_color.a<alpha_cutoff)
+               discard;
+
        vec3 normal = get_fragment_normal();
        vec3 look = normalize(world_look_dir);
 
-       vec4 base_color = get_base_color();
        float metalness = get_metalness_value();
        float roughness = get_roughness_value();