feat (wip): real-time gui with rendering in opengl

src/gui/shaders/rendertype_accumulate.frag

@@ -0,0 +1,19 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D currentFrameTex;
+uniform sampler2D lastFrameTex;
+uniform int frameCount;
+
+#define MAX_FRAMES 500.0f
+
+void main()
+{
+    vec3 col = texture(currentFrameTex, TexCoords).rgb;
+    vec3 col2 = texture(lastFrameTex, TexCoords).rgb;
+
+    col = mix(col, col2, min(frameCount/MAX_FRAMES,1.0f));
+    FragColor = vec4(col, 1.0);
+}

src/gui/shaders/rendertype_accumulate.vert

@@ -0,0 +1,11 @@
+#version 330 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+}

src/gui/shaders/rendertype_screen.frag

@@ -0,0 +1,12 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    vec3 col = texture(screenTexture, TexCoords).rgb;
+    FragColor = vec4(col, 1.0);
+}

src/gui/shaders/rendertype_screen.vert

@@ -0,0 +1,11 @@
+#version 330 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);
+}