render shadowmap and irradiance

1 files changed, 26 insertions, 22 deletions

diff --git a/shaders/fbo_frag.glsl b/shaders/fbo_frag.glsl
index f6f12cd..e199245 100644
--- a/shaders/fbo_frag.glsl
+++ b/shaders/fbo_frag.glsl
@@ -3,31 +3,35 @@ out vec4 FragColor;
   

 in vec2 TexCoords;

 

-uniform sampler2D screenTexture;

-uniform int applySSSSS;

-uniform int N;

+uniform sampler2D shadowmapTexture;

+uniform sampler2D irradianceTexture;

+uniform int screenWidth;

+uniform int screenHeight;

+uniform int renderState;

+uniform vec2 samplePositions[13];

+uniform vec3 sampleWeights[13];

 

 void main()

 {

-    if (applySSSSS == 1) {

-        float x = 1.0/1600.0;

-        float y = 1.0/900.0;

-

-        float maxDist = N*N + N*N;

-

-        vec4 color = vec4(0, 0, 0, 1);

-        for (int i = -N; i <= N; i++) {

-            for (int j = -N; j <= N; j++) {

-                float dist = i*i + j*j;

-                vec4 newC = texture(screenTexture, TexCoords + vec2(i*x, j*y)) / (2*N*N);

-                float factor = 1 - (dist / maxDist);

-                factor = pow(factor, 2);

-                color += newC * factor;

-            }

-        }

-        FragColor = color;

+    if (renderState == 0) {

+        FragColor = texture(shadowmapTexture, TexCoords);

     }

-    else {

-        FragColor = texture(screenTexture, TexCoords);

+    // stencil buffer

+    else if (renderState == 1 || texture(irradianceTexture, TexCoords).rgb == vec3(0, 0, 0)) {

+        FragColor = texture(irradianceTexture, TexCoords);

+    }

+    else if (renderState == 2) {

+        FragColor = texture(shadowmapTexture, TexCoords) * texture(irradianceTexture, TexCoords);

+    }

+    else if (renderState == 3) {

+        vec4 result = vec4(0, 0, 0, 1);

+        for (int i = 0; i < 13; i++) {

+            float oneX = 1.0/screenWidth;

+            float oneY = 1.0/screenHeight;

+            vec4 sample = texture(irradianceTexture, TexCoords + samplePositions[i] * vec2(oneX, oneY));

+            vec4 weight = vec4(sampleWeights[i], 1);

+            result += sample * weight;

+        }

+        FragColor = result;

     }

 }