public PostProcessingExample(int width, int height)
{
fbo = new FBO();
textureForRendering = Texture.Create(width, height);
shaderPostProcess = PixelShader.Create(Encoding.UTF8.GetString(Resources.Swirl));
shaderSource = PixelShader.Create(Encoding.UTF8.GetString(Resources.PatternCircle));
}
public PingPongExample(int width, int height)
{
fbo = new FBO();
textureA = Texture.Create(width, height);
textureB = Texture.Create(width, height);
active = textureA;
shaderCopy = PixelShader.Create(PixelShader.Copy);
shaderGameOfLife = PixelShader.Create(Encoding.UTF8.GetString(Resources.GameOfLife));
}
public VisualContext()
{
GL.Disable(EnableCap.DepthTest);
GL.ClearColor(1, 0, 0, 0);
surface = new FBO();
textureSurface = Texture.Create(1, 1);
shaderCopyToScreen = InitShaderCopyToScreen();
shaderDefault = InitShaderDefault();
}
public Visual()
{
// Vertex positions
float[] positions =
{
1.0f, -1.0f,
1.0f, 1.0f,
-1.0f, -1.0f,
-1.0f, 1.0f
};
// Reserve a name for the buffer object.
bufferQuad = GL.GenBuffer();
// Bind it to the GL_ARRAY_BUFFER target.
GL.BindBuffer(BufferTarget.ArrayBuffer, bufferQuad);
// Allocate space for it (sizeof(positions)
GL.BufferData(BufferTarget.ArrayBuffer
, (IntPtr) (sizeof(float) * positions.Length), positions, BufferUsageHint.StaticDraw);
GL.BindVertexArray(bufferQuad);
GL.EnableClientState(ArrayCap.VertexArray);
GL.VertexPointer(2, VertexPointerType.Float, 0, 0);
GL.BindVertexArray(0);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.Disable(EnableCap.DepthTest);
GL.ClearColor(1, 0, 0, 0);
surface = new FBO();
textureSurface = Texture.Create(1, 1);
string sVertexShader = @"
varying vec2 uv;
void main() {
gl_Position = gl_Vertex;
uv = gl_Vertex.xy * 0.5f + 0.5f;
}";
string sFragmentShd = @"
varying vec2 uv;
uniform sampler2D tex;
void main() {
gl_FragColor = texture(tex, uv);
}";
shaderCopyToScreen = Shader.LoadFromStrings(sVertexShader, sFragmentShd);
shader = new Shader();
texture1 = new Texture();
texture2 = new Texture();
}
public PostProcessing(int width, int height)
{
fbo = new FBO();
texImage = Texture.Create(width, height);
SetShader(ShaderCopy);
}