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| author | Patrick | 2021-03-23 19:28:28 +0100 |
|---|---|---|
| committer | Patrick | 2021-03-23 19:28:28 +0100 |
| commit | a0fdc6d882a1755d0b0607ba3d9bb55e7f8ac006 (patch) | |
| tree | 82aab3828111378b6f0421aa58025b43f98f13a2 /shaders/vert_irradiance.glsl | |
| parent | cedffd5cf24c1a3ed64161475c806c55135406be (diff) | |
| download | subsurface_scattering-a0fdc6d882a1755d0b0607ba3d9bb55e7f8ac006.tar.gz subsurface_scattering-a0fdc6d882a1755d0b0607ba3d9bb55e7f8ac006.zip | |
fix translucency, add gaussian blur to shader
Diffstat (limited to 'shaders/vert_irradiance.glsl')
| -rw-r--r-- | shaders/vert_irradiance.glsl | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/shaders/vert_irradiance.glsl b/shaders/vert_irradiance.glsl new file mode 100644 index 0000000..25770f6 --- /dev/null +++ b/shaders/vert_irradiance.glsl @@ -0,0 +1,77 @@ +#version 330 core
+
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec3 normal;
+
+out vec3 FragPos;
+out vec3 LocalPos;
+out vec3 Backside;
+out float BacksideIrradiance;
+out vec3 Normal;
+
+uniform sampler2D shadowmapTexture;
+uniform vec3 lightPos;
+uniform vec2 samplePositions[13];
+uniform vec3 sampleWeights[13];
+uniform int screenWidth;
+uniform int screenHeight;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 lightView;
+uniform mat4 lightViewInv;
+uniform mat4 projection;
+uniform mat4 lightProjection;
+
+vec4 blur(sampler2D tex, vec2 uv, vec2 res) {
+ float Pi = 6.28318530718; // Pi*2
+
+ // GAUSSIAN BLUR SETTINGS {{{
+ float Directions = 16.0; // BLUR DIRECTIONS (Default 16.0 - More is better but slower)
+ float Quality = 4.0; // BLUR QUALITY (Default 4.0 - More is better but slower)
+ float Size = 8.0; // BLUR SIZE (Radius)
+ // GAUSSIAN BLUR SETTINGS }}}
+
+ vec2 Radius = Size/res;
+
+ // Pixel colour
+ vec4 Color = texture(tex, uv);
+
+ // Blur calculations
+ for( float d=0.0; d<Pi; d+=Pi/Directions) {
+ for(float i=1.0/Quality; i<=1.0; i+=1.0/Quality) {
+ Color += texture( tex, uv+vec2(cos(d),sin(d))*Radius*i);
+ }
+ }
+
+ // Output to screen
+ Color /= Quality * Directions - 15.0;
+ return Color;
+}
+
+void main()
+{
+ gl_Position = projection * view * model * vec4(pos, 1.0);
+ FragPos = vec3(model * vec4(pos, 1));
+ LocalPos = pos;
+ Normal = normal;
+
+ vec4 lightSpace = lightProjection * lightView * model * vec4(pos, 1.0);
+ lightSpace = lightSpace / lightSpace.w;
+ vec2 shadowmapCoords = lightSpace.xy;
+ shadowmapCoords = vec2(
+ (shadowmapCoords.x * 0.99 + 1) / 2,
+ (shadowmapCoords.y * 0.99 + 1) / 2
+ );
+
+
+ // blur
+ vec4 t = texture(shadowmapTexture, shadowmapCoords);
+ //vec4 t = blur(shadowmapTexture, shadowmapCoords, vec2(screenWidth, screenHeight));
+
+ BacksideIrradiance = t.r + t.g*10 + t.b*100;
+
+ vec3 lightDir = (vec3(0, 0, 0) - lightPos);
+ Backside = (lightPos + (lightDir * BacksideIrradiance));
+ //Backside = texture(shadowmapTexture, shadowmapCoords).xyz*10;
+}
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