messing with blur

fallahn · Aug 24, 2024 · ae0aef2 · ae0aef2
1 parent 1412186
commit ae0aef2
Show file tree

Hide file tree

Showing 3 changed files with 71 additions and 32 deletions.
diff --git a/samples/scratchpad/src/pseuthe/PseutheBackgroundState.cpp b/samples/scratchpad/src/pseuthe/PseutheBackgroundState.cpp
@@ -96,18 +96,21 @@ bool PseutheBackgroundState::simulate(float dt)
 
 void PseutheBackgroundState::render()
 {
-    //m_backgroundBuffer.clear(cro::Colour::Black);
-    m_gameScene.render();
+    //m_backgroundBuffer.clear();
+    //m_gameScene.render();
     //m_backgroundBuffer.display();
 
-
-    //m_blurBufferH.clear(cro::Colour::Black);
+    //m_blurBufferH.clear();
     //m_backgroundQuad.draw();
     //m_blurBufferH.display();
 
-
+    //m_blurBufferV.clear();
     //m_blurQuadH.draw();
+    //m_blurBufferV.display();
 
+    //m_blurQuadV.draw();
+
+    m_gameScene.render();
 }
 
 //private
@@ -127,16 +130,16 @@ void PseutheBackgroundState::loadAssets()
     m_resources.shaders.loadFromString(ShaderID::BlurH, cro::SimpleDrawable::getDefaultVertexShader(), GaussianFrag, "#define HORIZONTAL\n");
     m_resources.shaders.loadFromString(ShaderID::BlurV, cro::SimpleDrawable::getDefaultVertexShader(), GaussianFrag, "#define VERTICAL\n");
 
-    m_backgroundBuffer.create(SceneSize.x/2, SceneSize.y/2, false);
-    m_backgroundBuffer.setSmooth(true);
+    m_backgroundBuffer.create(SceneSize.x, SceneSize.y, false);
     m_backgroundQuad.setTexture(m_backgroundBuffer.getTexture());
-    m_backgroundQuad.setScale(glm::vec2(2.f));
-    //m_backgroundQuad.setShader(m_resources.shaders.get(ShaderID::BlurH));
+    m_backgroundQuad.setShader(m_resources.shaders.get(ShaderID::BlurH));
 
     m_blurBufferH.create(SceneSize.x, SceneSize.y, false);
     m_blurQuadH.setTexture(m_blurBufferH.getTexture());
+    m_blurQuadH.setShader(m_resources.shaders.get(ShaderID::BlurV));
 
-
+    m_blurBufferV.create(SceneSize.x, SceneSize.y, false);
+    m_blurQuadV.setTexture(m_blurBufferV.getTexture());
 }
 
 void PseutheBackgroundState::createScene()
@@ -260,10 +263,10 @@ void PseutheBackgroundState::createScene()
 
     //        auto winSize = glm::vec2(cro::App::getWindow().getSize());
     //        auto viewScale = winSize.x / SceneSizeFloat.x;
-    //        m_blurQuadH.setScale(glm::vec2(viewScale));
+    //        m_blurQuadV.setScale(glm::vec2(viewScale));
 
     //        float offset = (winSize.y - (SceneSize.y * viewScale)) / 2.f;
-    //        m_blurQuadH.setPosition(glm::vec2(0.f, offset));
+    //        m_blurQuadV.setPosition(glm::vec2(0.f, offset));
     //    };
     //cam.resizeCallback(cam);
 

diff --git a/samples/scratchpad/src/pseuthe/PseutheBackgroundState.hpp b/samples/scratchpad/src/pseuthe/PseutheBackgroundState.hpp
@@ -31,6 +31,9 @@ class PseutheBackgroundState final : public cro::State, public cro::GuiClient
     cro::RenderTexture m_blurBufferH;
     cro::SimpleQuad m_blurQuadH;
 
+    cro::RenderTexture m_blurBufferV;
+    cro::SimpleQuad m_blurQuadV;
+
     cro::RenderTexture m_backgroundBuffer;
     cro::SimpleQuad m_backgroundQuad;
 

diff --git a/samples/scratchpad/src/pseuthe/PseuthePostFX.inl b/samples/scratchpad/src/pseuthe/PseuthePostFX.inl
@@ -8,35 +8,68 @@ static inline const std::string GaussianFrag =
 R"(
 uniform sampler2D u_texture;
 
+VARYING_IN vec2 v_texCoord;
 VARYING_IN vec4 v_colour;
- 
+
 OUTPUT
- 
-uniform float offset[3] = float[](0.0, 1.3846153846, 3.2307692308);
-uniform float weight[3] = float[](0.2270270270, 0.3162162162, 0.0702702703);
 
 #if defined(HORIZONTAL)
-const float TextureSize = 1920.0; //TODO set this at compile tile from const vals
-#define OFFSET vec2(offset[i], 0.0)
+const vec2 offset = vec2(1.0/1920.0, 0.0);
 #else
-const float TextureSize = 1080.0;
-#define OFFSET vec2(0.0, offset[i])
+const vec2 offset = vec2(0.0,1.0/1080.0);
 #endif
- 
+
 void main()
 {
-    vec4 colour = TEXTURE(u_texture, vec2(gl_FragCoord) / TextureSize) * weight[0];
-
-    for (int i = 1; i < 3; i++)
-    {
-        colour += TEXTURE(u_texture, (vec2(gl_FragCoord) + OFFSET) / TextureSize) * weight[i];
-        colour += TEXTURE(u_texture, (vec2(gl_FragCoord) - OFFSET) / TextureSize) * weight[i];
-    }
+    vec2 texCoords = v_texCoord;
+    vec4 colour = vec4(0.0);
+    colour += TEXTURE(u_texture, texCoords - 4.0 * offset) * 0.0162162162;
+    colour += TEXTURE(u_texture, texCoords - 3.0 * offset) * 0.0540540541;
+    colour += TEXTURE(u_texture, texCoords - 2.0 * offset) * 0.1216216216;
+    colour += TEXTURE(u_texture, texCoords - offset) * 0.1945945946;
+    colour += TEXTURE(u_texture, texCoords) * 0.2270270270;
+    colour += TEXTURE(u_texture, texCoords + offset) * 0.1945945946;
+    colour += TEXTURE(u_texture, texCoords + 2.0 * offset) * 0.1216216216;
+    colour += TEXTURE(u_texture, texCoords + 3.0 * offset) * 0.0540540541;
+    colour += TEXTURE(u_texture, texCoords + 4.0 * offset) * 0.0162162162;
+    FRAG_OUT = colour;// * v_colour;
 
-    FRAG_OUT.rgb = colour.rgb;
     FRAG_OUT.a = 1.0;
+})";
 
-    FRAG_OUT *= v_colour;
-}
 
-)";
+//R"(
+//uniform sampler2D u_texture;
+//
+//VARYING_IN vec4 v_colour;
+// 
+//OUTPUT
+// 
+//uniform float offset[3] = float[](0.0, 1.3846153846, 3.2307692308);
+//uniform float weight[3] = float[](0.2270270270, 0.3162162162, 0.0702702703);
+//
+//#if defined(HORIZONTAL)
+//const float TextureSize = 1920.0; //TODO set this at compile tile from const vals
+//#define OFFSET vec2(offset[i], 0.0)
+//#else
+//const float TextureSize = 1080.0;
+//#define OFFSET vec2(0.0, offset[i])
+//#endif
+// 
+//void main()
+//{
+//    vec4 colour = TEXTURE(u_texture, vec2(gl_FragCoord) / TextureSize) * weight[0];
+//
+//    for (int i = 1; i < 3; i++)
+//    {
+//        colour += TEXTURE(u_texture, (vec2(gl_FragCoord) + OFFSET) / TextureSize) * weight[i];
+//        colour += TEXTURE(u_texture, (vec2(gl_FragCoord) - OFFSET) / TextureSize) * weight[i];
+//    }
+//
+//    FRAG_OUT.rgb = colour.rgb;
+//    FRAG_OUT.a = 1.0;
+//
+//    FRAG_OUT *= v_colour;
+//}
+//
+//)";