void FrameBufferObject::createGBuffer(void)
{
//! World Space Positions
//AddColorAttachment(0);
//! View space positions
addColorAttachment(0);
//! View space normals
addColorAttachment(1);
//! World space normals
//AddColorAttachment(2);
//! Color
addColorAttachment(2);
//! Reflectance
addColorAttachment(3);
//! Billboards
addColorAttachment(4);
//! Free color attachment
//AddColorAttachment(5);
//! Depth
addDepthAttachment_Texture(5);
//AddDepthAttachment_MultisampleTexture(9);
std::cout << "FrameBuffer: Attachment count: " << m_attachmentCounter << std::endl;
m_isGBuffer = true;
}
void LLMultisampleBuffer::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo, U32 samples )
{
stop_glerror();
mResX = resx;
mResY = resy;
mUsage = usage;
mUseDepth = depth;
mStencil = stencil;
release();
if (!gGLManager.mHasFramebufferMultisample)
{
llerrs << "Attempting to allocate unsupported render target type!" << llendl;
}
mSamples = samples;
if (mSamples <= 1)
{
llerrs << "Cannot create a multisample buffer with less than 2 samples." << llendl;
}
stop_glerror();
if ((sUseFBO || use_fbo) && gGLManager.mHasFramebufferObject)
{
if (depth)
{
stop_glerror();
allocateDepth();
stop_glerror();
}
glGenFramebuffersEXT(1, (GLuint *) &mFBO);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFBO);
if (mDepth)
{
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepth);
if (mStencil)
{
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepth);
}
}
stop_glerror();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
stop_glerror();
}
addColorAttachment(color_fmt);
}
bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo, S32 samples)
{
stop_glerror();
release();
stop_glerror();
mResX = resx;
mResY = resy;
mStencil = stencil;
mUsage = usage;
mUseDepth = depth;
if ((sUseFBO || use_fbo) && gGLManager.mHasFramebufferObject)
{
if (depth)
{
if (!allocateDepth())
{
llwarns << "Failed to allocate depth buffer for render target." << llendl;
return false;
}
}
glGenFramebuffers(1, (GLuint *) &mFBO);
if (mDepth)
{
glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
if (mStencil)
{
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepth);
stop_glerror();
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mDepth);
stop_glerror();
}
else
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, LLTexUnit::getInternalType(mUsage), mDepth, 0);
stop_glerror();
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
stop_glerror();
}
return addColorAttachment(color_fmt);
}
void LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo)
{
stop_glerror();
mResX = resx;
mResY = resy;
mStencil = stencil;
mUsage = usage;
mUseDepth = depth;
release();
if ((sUseFBO || use_fbo) && gGLManager.mHasFramebufferObject)
{
if (depth)
{
stop_glerror();
allocateDepth();
stop_glerror();
}
glGenFramebuffersEXT(1, (GLuint *) &mFBO);
if (mDepth)
{
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFBO);
if (mStencil)
{
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepth);
stop_glerror();
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepth);
stop_glerror();
}
else
{
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, LLTexUnit::getInternalType(mUsage), mDepth, 0);
stop_glerror();
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}
stop_glerror();
}
addColorAttachment(color_fmt);
}
bool LLMultisampleBuffer::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo, U32 samples )
{
release();
stop_glerror();
if (!gGLManager.mHasFramebufferMultisample || !gGLManager.mHasFramebufferObject || !(sUseFBO || use_fbo))
return false;
if(color_fmt != GL_RGBA)
{
llwarns << "Unsupported color format: " << color_fmt << llendl;
return false;
}
//Restrict to valid sample count
{
mSamples = samples;
//mSamples = llmin(mSamples, (U32)4); //Cap to prevent memory bloat.
mSamples = llmin(mSamples, (U32) gGLManager.mMaxSamples);
}
if (mSamples <= 1)
return false;
mResX = resx;
mResY = resy;
mUsage = usage;
mUseDepth = depth;
mStencil = stencil;
mColorFormat = color_fmt;
{
if (depth)
{
stop_glerror();
if(!allocateDepth())
{
release();
return false;
}
stop_glerror();
}
glGenFramebuffers(1, (GLuint *) &mFBO);
glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
stop_glerror();
clear_glerror();
if (mDepth)
{
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepth);
if (mStencil)
{
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mDepth);
}
}
stop_glerror();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
stop_glerror();
}
return addColorAttachment(color_fmt);
}
void FrameBufferObject::createBuffers(int count)
{
//! Color attachment 0
addColorAttachment(0);
}
void LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, bool stencil, LLTexUnit::eTextureType usage, bool use_fbo, S32 samples)
{
stop_glerror();
release();
mResX = resx;
mResY = resy;
mStencil = stencil;
mUsage = usage;
mUseDepth = depth;
mSamples = samples;
mSamples = gGLManager.getNumFBOFSAASamples(mSamples);
if (mSamples > 1 && gGLManager.mHasTextureMultisample)
{
mUsage = LLTexUnit::TT_MULTISAMPLE_TEXTURE;
//no support for multisampled stencil targets yet
mStencil = false;
}
else
{
mSamples = 0;
}
if ((sUseFBO || use_fbo) && gGLManager.mHasFramebufferObject)
{
if (depth)
{
stop_glerror();
allocateDepth();
stop_glerror();
}
glGenFramebuffers(1, (GLuint *) &mFBO);
if (mDepth)
{
glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
if (mStencil)
{
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepth);
stop_glerror();
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mDepth);
stop_glerror();
}
else
{
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, LLTexUnit::getInternalType(mUsage), mDepth, 0);
stop_glerror();
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
stop_glerror();
}
addColorAttachment(color_fmt);
}
