void FrameBuffer::CreateTexturesAndBind()
{
// Create textures for each buffer.
for (int i = 0; i < renderBuffers.Size(); ++i)
{
RenderBuffer * rb = renderBuffers[i];
// Actually create it.
rb->CreateBuffer();
rb->CreateTexture();
// Bind them straight away too.
rb->BindTextureToFrameBuffer();
}
}
void FrameBuffer::CreateRenderBuffers()
{
/// OpenGL specific data
/// Frame buffer object for deferred shading
//GLuint frameBufferObject; // Main frame buffer object to use
//GLuint depthBuffer; // Depth buffer to act as Z-buffer for when parsing the input to the frame buffer
//GLuint positionTexture; // World coordinate position texture
//GLuint diffuseTexture; // Diffuse texture
//GLuint depthTexture; // Depth texture
//GLuint normalTexture; // Normal texture
//
GLuint error;
/// Setup main Frame buffer object
if (frameBufferObject == -1)
frameBufferObject = GLFrameBuffers::New();
error = glGetError();
/// Bind it for manipulatoin.
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferObject);
AssertGLError("FrameBuffer::CreateRenderBuffers");
/// Establish some variables before we try tweaking properties..
Vector2i textureSize = size;
/*
/// Try oversampling o-o
bool overSampling = false;
if (overSampling){
glEnable( GL_MULTISAMPLE );
textureSize *= 2;
}
else
glDisable(GL_MULTISAMPLE);
*/
/// Setup Render buffers
AssertGLError("FrameBuffer::CreateRenderBuffers");
// Delete the old buffers as needed.
for (int i = 0; i < renderBuffers.Size(); ++i)
{
RenderBuffer * rb = renderBuffers[i];
std::cout<<"\nDeallocating renderBuffer..";
delete rb;
}
renderBuffers.Clear();
// Create the buffers.
RenderBuffer
* depthBuf = new RenderBuffer("Depthbuf", BufferType::DEPTH_BUFFER, BufferStorageType::DEPTH_16F, textureSize),
* diffBuf = new RenderBuffer("Diffuse", BufferType::COLOR_BUFFER_1, ColorStorageType(), textureSize)//,
// * norBuf = new RenderBuffer(BufferType::COLOR_BUFFER_2, BufferStorageType::RGB_16F, textureSize),
// * posBuf = new RenderBuffer(BufferType::COLOR_BUFFER_3, BufferStorageType::RGB_32F, textureSize)
;
// Try adding the rest later on..?
renderBuffers.Add(depthBuf);
renderBuffers.Add(diffBuf);
// renderBuffers.Add(norBuf);
// renderBuffers.Add(posBuf);
// Bind to 0 when done.
glBindRenderbuffer(GL_RENDERBUFFER, 0);
AssertGLError("FrameBuffer::CreateRenderBuffers");
// Create textures for each buffer.
for (int i = 0; i < renderBuffers.Size(); ++i)
{
RenderBuffer * rb = renderBuffers[i];
// Actually create it.
rb->CreateBuffer();
rb->CreateTexture();
// Bind them straight away too.
rb->BindTextureToFrameBuffer();
}
int frameBufferColorAttachmentsSet = 7;
GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); // Check that status of our generated frame buffer
AssertGLError("FrameBuffer::CreateRenderBuffers");
// Check that frame buffer is okay to work on.
int result = glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
switch(result) {
case GL_FRAMEBUFFER_COMPLETE: // yay :3
break;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
std::cout<<"\nINFO: Framebuffer incomplete attachment.";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
std::cout<<"\nINFO: Framebuffer incomplete, missing attachment. Attach an image!";
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
std::cout<<"\nINFO: Framebuffer incomplete draw buffer.";
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
std::cout<<"\nINFO: Framebuffer incomplete read buffer.";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
std::cout<<"\nINFO: Framebuffer incomplete multisample.";
break;
case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS:
std::cout<<"\nINFO: Framebuffer incomplete layer targets.";
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
std::cout<<"\nINFO: Framebuffer unsupported.";
break;
default:
std::cout<<"\nINFO: Unknown error in framebuffer ...";
break;
}
if (result != GL_FRAMEBUFFER_COMPLETE)
{
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
std::cout<<"\nINFO: FrameBuffer not ready to be used.";
SleepThread(10);
return;
}
/// Only have frame buffer parameters in OpenGL 4.3 core and above...
if (GL_VERSION_MAJOR >= 4 && GL_VERSION_MINOR >= 3){
/// Set frame buffer parameters
// glFramebufferParameteri(GL_DRAW_FRAMEBUFFER, GL_FRAMEBUFFER_DEFAULT_WIDTH, 512);
// glFramebufferParameteri(GL_DRAW_FRAMEBUFFER, GL_FRAMEBUFFER_DEFAULT_HEIGHT, 512);
// glFramebufferParameteri(GL_DRAW_FRAMEBUFFER, GL_FRAMEBUFFER_DEFAULT_SAMPLES, 4);
error = glGetError();
}
// Unbind our frame buffer object, along with its attached render buffers
glBindFramebuffer(GL_FRAMEBUFFER, 0);
AssertGLError("FrameBuffer::CreateRenderBuffers");
// Ok!
good = true;
}
