GLFramebuffer::GLFramebuffer(const GLFramebufferDesc& desc)
: _width(0)
, _height(0)
{
glGenFramebuffers(1, &_framebuffer_id);
glNamedFramebufferParameteri(_framebuffer_id, GL_FRAMEBUFFER_DEFAULT_WIDTH, desc.default_width);
glNamedFramebufferParameteri(_framebuffer_id, GL_FRAMEBUFFER_DEFAULT_HEIGHT, desc.default_height);
for (const auto& attachment : desc.attachments)
{
auto cubemap = dynamic_cast<GLTextureCubemap*>(attachment.texture.get());
if (cubemap)
{
for (int i = 0; i < 6; ++i)
glNamedFramebufferTexture2DEXT(_framebuffer_id, attachment.attachment_type + i, GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, attachment.texture->id(), attachment.texture_level);
}
else
{
glNamedFramebufferTexture2DEXT(_framebuffer_id, attachment.attachment_type, GL_TEXTURE_2D, attachment.texture->id(), attachment.texture_level);
}
_width = attachment.texture->width();
_height = attachment.texture->height();
_attachments[attachment.attachment_type] = attachment.texture;
}
auto check = glCheckNamedFramebufferStatus(_framebuffer_id, GL_FRAMEBUFFER);
}
bool WrappedOpenGL::Serialise_glNamedFramebufferTexture2DEXT(GLuint framebuffer, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
{
SERIALISE_ELEMENT(GLenum, Attach, attachment);
SERIALISE_ELEMENT(ResourceId, id, GetResourceManager()->GetID(TextureRes(GetCtx(), texture)));
SERIALISE_ELEMENT(GLenum, TexTarget, textarget);
SERIALISE_ELEMENT(int32_t, Level, level);
SERIALISE_ELEMENT(ResourceId, fbid, (framebuffer == 0 ? ResourceId() : GetResourceManager()->GetID(FramebufferRes(GetCtx(), framebuffer))));
if(m_State < WRITING)
{
GLResource res = GetResourceManager()->GetLiveResource(id);
if(fbid == ResourceId())
{
glNamedFramebufferTexture2DEXT(0, Attach, TexTarget, res.name, Level);
}
else
{
GLResource fbres = GetResourceManager()->GetLiveResource(fbid);
glNamedFramebufferTexture2DEXT(fbres.name, Attach, TexTarget, res.name, Level);
}
if(m_State == READING)
{
m_Textures[GetResourceManager()->GetLiveID(id)].creationFlags |= eTextureCreate_RTV;
}
}
return true;
}
void init(size_t width, size_t height, const GLenum internalFormats[NbColorBuffers], GLenum filter) {
m_nWidth = width;
m_nHeight = height;
// Allocation of the textures for each attribute and attachment to the FBO
for(uint32_t i = 0; i < COLORBUFFER_COUNT; ++i) {
m_ColorBuffers[i] = GLTexture2D();
m_ColorBuffers[i].setStorage(1, internalFormats[i], width, height);
m_ColorBuffers[i].setMinFilter(filter);
m_ColorBuffers[i].setMagFilter(filter);
glNamedFramebufferTexture2DEXT(m_Fbo.glId(), GL_COLOR_ATTACHMENT0 + i,
GL_TEXTURE_2D, m_ColorBuffers[i].glId(), 0);
// Add corresponding draw buffer GL constant
m_DrawBuffers[i] = GL_COLOR_ATTACHMENT0 + i;
}
}
bool init(size_t width, size_t height, const GLenum internalFormats[NbColorBuffers],
GLenum depthInternalFormat, GLenum filter = GL_NEAREST) {
ParentClass::init(width, height, internalFormats, filter);
// Allocation and attachment of depth texture
m_DepthBuffer = GLTexture2D();
m_DepthBuffer.setStorage(1, depthInternalFormat, width, height);
m_DepthBuffer.setMinFilter(filter);
m_DepthBuffer.setMagFilter(filter);
glNamedFramebufferTexture2DEXT(ParentClass::m_Fbo.glId(), GL_DEPTH_ATTACHMENT,
GL_TEXTURE_2D, m_DepthBuffer.glId(), 0);
// check that the FBO is complete
GLenum status = glCheckNamedFramebufferStatusEXT(ParentClass::m_Fbo.glId(), GL_DRAW_FRAMEBUFFER);
if(GL_FRAMEBUFFER_COMPLETE != status) {
std::cerr << GLFramebufferErrorString(status) << std::endl;
return false;
}
return true;
}