public void Dispose()
{
if (postprocessingEnabled)
{
gl.DeleteRenderbuffersEXT(1, glRenderBufferArray);
gl.DeleteTextures(1, glFrameBufferTexArray);
gl.DeleteFramebuffersEXT(1, glFrameBufferArray);
postShader.Dispose();
postShader = null;
}
}
private void UpdatePostProcessing(bool enabled)
{
if (!postprocessingEnabled && enabled)
{
// Setup back buffer
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.GenTextures(1, glFrameBufferTexArray);
fboTexture = glFrameBufferTexArray[0];
gl.BindTexture(OpenGL.GL_TEXTURE_2D, fboTexture);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA,
viewportSize.Width, viewportSize.Height, 0,
OpenGL.GL_RGBA, OpenGL.GL_UNSIGNED_BYTE, null);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// Setup depth buffer
gl.GenRenderbuffersEXT(1, glRenderBufferArray);
rboDepth = glRenderBufferArray[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER, rboDepth);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER, OpenGL.GL_DEPTH_COMPONENT16,
viewportSize.Width, viewportSize.Height);
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER, 0);
// Setup framebuffer
gl.GenFramebuffersEXT(1, glFrameBufferArray);
fbo = glFrameBufferArray[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, fbo);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT,
OpenGL.GL_TEXTURE_2D, fboTexture, 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER, rboDepth);
uint fboStatus = gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT);
if (gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT) != OpenGL.GL_FRAMEBUFFER_COMPLETE_EXT)
{
postprocessingEnabled = false;
gl.DeleteRenderbuffersEXT(1, glRenderBufferArray);
gl.DeleteTextures(1, glFrameBufferTexArray);
gl.DeleteFramebuffersEXT(1, glFrameBufferArray);
return;
}
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
// Setup post-processing shader
postShader = new Shader(gl, ManifestResourceLoader.LoadTextFile(@"Resources\Shaders\screen.vert"),
ManifestResourceLoader.LoadTextFile(@"Resources\Shaders\screen.frag"), null);
if (!postShader.Compiled)
{
throw new Exception(postShader.CompilerOutput);
}
postprocessingEnabled = true;
}
else if (postprocessingEnabled && !enabled)
{
gl.DeleteRenderbuffersEXT(1, glRenderBufferArray);
gl.DeleteTextures(1, glFrameBufferTexArray);
gl.DeleteFramebuffersEXT(1, glFrameBufferArray);
postShader.Dispose();
postShader = null;
postprocessingEnabled = false;
}
}
private void UpdatePostProcessing(bool enabled)
{
if (!postprocessingEnabled && enabled)
{
// Setup back buffer
gl.ActiveTexture(OpenGL.GL_TEXTURE0);
gl.GenTextures(1, glFrameBufferTexArray);
fboTexture = glFrameBufferTexArray[0];
gl.BindTexture(OpenGL.GL_TEXTURE_2D, fboTexture);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, OpenGL.GL_LINEAR);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexParameter(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
gl.TexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA,
viewportSize.Width, viewportSize.Height, 0,
OpenGL.GL_RGBA, OpenGL.GL_UNSIGNED_BYTE, null);
gl.BindTexture(OpenGL.GL_TEXTURE_2D, 0);
// Setup depth buffer
gl.GenRenderbuffersEXT(1, glRenderBufferArray);
rboDepth = glRenderBufferArray[0];
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER, rboDepth);
gl.RenderbufferStorageEXT(OpenGL.GL_RENDERBUFFER, OpenGL.GL_DEPTH_COMPONENT16,
viewportSize.Width, viewportSize.Height);
gl.BindRenderbufferEXT(OpenGL.GL_RENDERBUFFER, 0);
// Setup framebuffer
gl.GenFramebuffersEXT(1, glFrameBufferArray);
fbo = glFrameBufferArray[0];
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, fbo);
gl.FramebufferTexture2DEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_COLOR_ATTACHMENT0_EXT,
OpenGL.GL_TEXTURE_2D, fboTexture, 0);
gl.FramebufferRenderbufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, OpenGL.GL_DEPTH_ATTACHMENT_EXT,
OpenGL.GL_RENDERBUFFER, rboDepth);
uint fboStatus = gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT);
if (gl.CheckFramebufferStatusEXT(OpenGL.GL_FRAMEBUFFER_EXT) != OpenGL.GL_FRAMEBUFFER_COMPLETE_EXT)
{
postprocessingEnabled = false;
gl.DeleteRenderbuffersEXT(1, glRenderBufferArray);
gl.DeleteTextures(1, glFrameBufferTexArray);
gl.DeleteFramebuffersEXT(1, glFrameBufferArray);
return;
}
gl.BindFramebufferEXT(OpenGL.GL_FRAMEBUFFER_EXT, 0);
// Setup post-processing shader
postShader = new Shader(gl, ManifestResourceLoader.LoadTextFile(@"Resources\Shaders\screen.vert"),
ManifestResourceLoader.LoadTextFile(@"Resources\Shaders\screen.frag"), null);
if (!postShader.Compiled)
{
throw new Exception(postShader.CompilerOutput);
}
postprocessingEnabled = true;
}
else if (postprocessingEnabled && !enabled)
{
gl.DeleteRenderbuffersEXT(1, glRenderBufferArray);
gl.DeleteTextures(1, glFrameBufferTexArray);
gl.DeleteFramebuffersEXT(1, glFrameBufferArray);
postShader.Dispose();
postShader = null;
postprocessingEnabled = false;
}
}