bool
OGLCoreFramebuffer::setup(const GraphicsFramebufferDesc& framebufferDesc) noexcept
{
assert(GL_NONE == _fbo);
assert(framebufferDesc.getGraphicsFramebufferLayout());
assert(framebufferDesc.getGraphicsFramebufferLayout()->isInstanceOf<OGLFramebufferLayout>());
assert(framebufferDesc.getWidth() > 0 && framebufferDesc.getHeight() > 0);
glCreateFramebuffers(1, &_fbo);
if (_fbo == GL_NONE)
{
this->getDevice()->downcast<OGLDevice>()->message("glCreateFramebuffers() fail");
return false;
}
GLenum drawCount = 0;
GLenum drawBuffers[GL_COLOR_ATTACHMENT15 - GL_COLOR_ATTACHMENT0];
const auto& textureComponents = framebufferDesc.getGraphicsFramebufferLayout()->getGraphicsFramebufferLayoutDesc().getComponents();
const auto& colorAttachments = framebufferDesc.getColorAttachments();
if (colorAttachments.size() > (sizeof(drawBuffers) / sizeof(drawBuffers[0])))
{
this->getDevice()->downcast<OGLDevice>()->message("The color attachment in framebuffer is out of range.");
return false;
}
for (std::size_t i = 0; i < textureComponents.size(); i++)
{
auto type = textureComponents[i].getAttachType();
switch (type)
{
case GraphicsImageLayout::GraphicsImageLayoutGeneral:
break;
case GraphicsImageLayout::GraphicsImageLayoutColorAttachmentOptimal:
{
GLint slot = GL_COLOR_ATTACHMENT0 + textureComponents[i].getAttachSlot();
GLint mipLevel = colorAttachments[drawCount].getBindingLevel();
GLint layer = colorAttachments[drawCount].getBindingLayer();
if (!this->bindRenderTexture(colorAttachments[drawCount].getBindingTexture(), slot, mipLevel, layer))
return false;
drawBuffers[drawCount++] = slot;
}
break;
case GraphicsImageLayout::GraphicsImageLayoutDepthStencilAttachmentOptimal:
case GraphicsImageLayout::GraphicsImageLayoutDepthStencilReadOnlyOptimal:
{
const auto& depthStencilAttachment = framebufferDesc.getDepthStencilAttachment();
if (!depthStencilAttachment.getBindingTexture())
{
this->getDevice()->downcast<OGLDevice>()->message("Need depth or stencil texture.");
return false;
}
auto texture = depthStencilAttachment.getBindingTexture();
auto format = texture->getGraphicsTextureDesc().getTexFormat();
auto level = depthStencilAttachment.getBindingLevel();
auto layer = depthStencilAttachment.getBindingLayer();
if (OGLTypes::isDepthStencilFormat(format))
{
if (!this->bindRenderTexture(texture, GL_DEPTH_STENCIL_ATTACHMENT, level, layer))
return false;
}
else if (OGLTypes::isDepthFormat(format))
{
if (!this->bindRenderTexture(texture, GL_DEPTH_ATTACHMENT, level, layer))
return false;
}
else if (OGLTypes::isStencilFormat(format))
{
if (!this->bindRenderTexture(texture, GL_STENCIL_ATTACHMENT, level, layer))
return false;
}
else
{
this->getDevice()->downcast<OGLDevice>()->message("Invalid texture format");
return false;
}
}
case GraphicsImageLayout::GraphicsImageLayoutShaderReadOnlyOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutTransferSrcOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutTransferDstOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutPreinitialized:
break;
case GraphicsImageLayout::GraphicsImageLayoutPresentSrcKhr:
break;
default:
break;
}
}
glNamedFramebufferDrawBuffers(_fbo, drawCount, drawBuffers);
_framebufferDesc = framebufferDesc;
return OGLCheck::checkError();
}
bool
EGL2Framebuffer::setup(const GraphicsFramebufferDesc& framebufferDesc) noexcept
{
assert(GL_NONE == _fbo);
assert(framebufferDesc.getGraphicsFramebufferLayout());
assert(framebufferDesc.getWidth() > 0 && framebufferDesc.getHeight() > 0);
std::uint32_t numAttachment = framebufferDesc.getColorAttachments().size();
if (numAttachment > 1)
{
GL_PLATFORM_LOG("Can't support multi framebuffer");
return false;
}
GL_CHECK(glGenFramebuffers(1, &_fbo));
if (_fbo == GL_NONE)
{
GL_PLATFORM_LOG("glCreateFramebuffers() fail");
return false;
}
GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, _fbo));
const auto& textureComponents = framebufferDesc.getGraphicsFramebufferLayout()->getGraphicsFramebufferLayoutDesc().getComponents();
const auto& colorAttachments = framebufferDesc.getColorAttachments();
for (std::size_t i = 0; i < textureComponents.size(); i++)
{
auto type = textureComponents[i].getAttachType();
switch (type)
{
case GraphicsImageLayout::GraphicsImageLayoutGeneral:
break;
case GraphicsImageLayout::GraphicsImageLayoutColorAttachmentOptimal:
{
GLint slot = GL_COLOR_ATTACHMENT0 + textureComponents[i].getAttachSlot();
GLint mipLevel = colorAttachments[0].getBindingLevel();
GLint layer = colorAttachments[0].getBindingLayer();
if (!this->bindRenderTexture(colorAttachments[0].getBindingTexture(), slot, mipLevel, layer))
return false;
}
break;
case GraphicsImageLayout::GraphicsImageLayoutDepthStencilAttachmentOptimal:
case GraphicsImageLayout::GraphicsImageLayoutDepthStencilReadOnlyOptimal:
{
const auto& depthStencilAttachment = framebufferDesc.getDepthStencilAttachment();
if (!depthStencilAttachment.getBindingTexture())
{
GL_PLATFORM_LOG("Need depth or stencil texture.");
return false;
}
auto texture = depthStencilAttachment.getBindingTexture();
auto format = texture->getGraphicsTextureDesc().getTexFormat();
auto level = depthStencilAttachment.getBindingLevel();
auto layer = depthStencilAttachment.getBindingLayer();
if (EGL2Types::isDepthFormat(format))
{
if (!this->bindRenderTexture(texture, GL_DEPTH_ATTACHMENT, level, layer))
return false;
}
else if (EGL2Types::isStencilFormat(format))
{
if (!this->bindRenderTexture(texture, GL_STENCIL_ATTACHMENT, level, layer))
return false;
}
else
{
GL_PLATFORM_LOG("Invalid texture format");
return false;
}
}
case GraphicsImageLayout::GraphicsImageLayoutShaderReadOnlyOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutTransferSrcOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutTransferDstOptimal:
break;
case GraphicsImageLayout::GraphicsImageLayoutPreinitialized:
break;
case GraphicsImageLayout::GraphicsImageLayoutPresentSrcKhr:
break;
default:
break;
}
}
GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, GL_NONE));
_framebufferDesc = framebufferDesc;
return EGL2Check::checkError();
}