void GLFramebufferObject::setDrawBuffers(
Array1DReadView< GLenum > attachments )
{
assert( attachments.packed() );
glNamedFramebufferDrawBuffers( m_id,
static_cast< GLsizei >( attachments.size() ), attachments.pointer() );
}
void colorBuffersOutputActivate(T ... vals) noexcept
{
std::array<unsigned int,sizeof...(vals)> val_array{vals...};
auto ptr=val_array.begin();
while(ptr!=val_array.end())
{
*ptr+=GL_COLOR_ATTACHMENT0;
++ptr;
}
glNamedFramebufferDrawBuffers(m_handle,val_array.size(),val_array.begin());
}
kit::PixelBuffer::Ptr kit::PixelBuffer::create(glm::uvec2 resolution, kit::PixelBuffer::AttachmentList colorattachments)
{
kit::PixelBuffer::Ptr returner = std::make_shared<kit::PixelBuffer>();
returner->m_resolution = resolution;
if(colorattachments.size() == 0)
{
KIT_GL(glNamedFramebufferDrawBuffer(returner->m_glHandle, GL_NONE));
}
else
{
// Keep track of attachments and create a drawbuffers
std::vector<GLenum> drawBuffers(colorattachments.size());
uint32_t currAttachment = 0;
// Add/create color attachments
for(auto & info : colorattachments)
{
// Fill the drawbuffer
GLenum currEnum = GL_COLOR_ATTACHMENT0+ currAttachment;
drawBuffers[currAttachment] = currEnum;
currAttachment++;
// Add texture if exists, otherwise create it
if(info.texture != nullptr)
{
// Assert resolution
if(info.texture->getResolution().x != resolution.x || info.texture->getResolution().y != resolution.y)
{
KIT_THROW("Pixelbuffer attachments must be of the same size");
}
returner->m_colorAttachments.push_back(info.texture);
KIT_GL(glNamedFramebufferTexture(returner->m_glHandle, currEnum, info.texture->getHandle(), 0));
}
else
{
kit::Texture::Ptr adder = kit::Texture::create2D(resolution, info.format, info.edgeSamplingMode, info.minFilteringMode, info.magFilteringMode);
returner->m_colorAttachments.push_back(adder);
KIT_GL(glNamedFramebufferTexture(returner->m_glHandle, currEnum, adder->getHandle(), 0));
}
}
// Set drawbuffers
KIT_GL(glNamedFramebufferDrawBuffers(returner->m_glHandle, (GLsizei)drawBuffers.size(), &drawBuffers[0]));
}
return returner;
}
void RaycastingPass::draw(const Camera & cam, const gl::FBO & fbo, const std::vector<std::shared_ptr<Light>> lights) {
fbo.bind();
glViewport(0, 0, static_cast<GLsizei>(cam.getWidth()), static_cast<GLsizei>(cam.getHeight()));
GLenum db[3] {GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2};
glNamedFramebufferDrawBuffers(fbo, 3, db);
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.f, 0.f, 0.f, 1.f);
m_program.use();
m_lightBuffer.bindTo(0);
size_t size = lights.size();
std::vector<LightData> data;
for (const auto & light : lights) {
data.emplace_back(light->getData());
}
m_lightBuffer.addData(data, static_cast<unsigned int>(size));
m_program["camPos"] = cam.getPos();
m_program["viewDir"] = cam.getDir();
m_program["lightDataSize"] = size;
for (auto id : m_objects) {
m_program["MVP"] = cam.getProjMat() * cam.getViewMat() * ObjectInterface::getModelMatrix(id);
m_program["M_IT"] = glm::inverse(glm::transpose(ObjectInterface::getModelMatrix(id)));
m_program["M"] = ObjectInterface::getModelMatrix(id);
m_program["material.emission"] = ObjectID::getID(id)->getEmission();
m_program["material.ambient"] = ObjectID::getID(id)->getAmbient();
m_program["material.diffuse"] = ObjectID::getID(id)->getDiffuse();
m_program["material.specular"] = ObjectID::getID(id)->getSpecular();
m_program["material.shininess"] = ObjectID::getID(id)->getShininess();
ObjectInterface::draw(id);
}
fbo.unbind();
}
void
piglit_init(int argc, char **argv)
{
bool pass = true;
GLuint framebuffer;
GLuint default_framebuffer = 0;
GLenum bufs[2] = {GL_BACK_LEFT, GL_BACK};
GLenum one_buf;
bool subtest_pass;
int i;
glCreateFramebuffers(1, &framebuffer);
piglit_check_gl_error(GL_NO_ERROR);
/*
* "An INVALID_OPERATION error is generated by
* NamedFramebufferDrawBuffers if framebuffer is not zero or
* the name of an existing framebuffer"
*/
glNamedFramebufferDrawBuffers(5, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "INVALID_OPERATION if "
"framebuffer is not zero or the name of an existing "
"framebuffer");
/*
* "An INVALID_VALUE error is generated if n is negative, or greater than the
* value of MAX_DRAW_BUFFERS."
*/
int max_draw_buffers;
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &max_draw_buffers);
subtest_pass = true;
glNamedFramebufferDrawBuffers(0, -1, bufs);
subtest_pass = subtest_pass & piglit_check_gl_error(GL_INVALID_VALUE);
glNamedFramebufferDrawBuffers(0, max_draw_buffers + 1, bufs);
subtest_pass = subtest_pass & piglit_check_gl_error(GL_INVALID_VALUE);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_VALUE error is "
"generated if n is negative, or greater than "
"the value of MAX_DRAW_BUFFERS.");
/*
* From OpenGL 4.5 spec
* "An INVALID_ENUM error is generated if any value in bufs
* is not one of the values in tables 17.5 or 17.6."
*/
subtest_pass = true;
one_buf = GL_RED;
glNamedFramebufferDrawBuffers(default_framebuffer, 1, &one_buf);
subtest_pass = subtest_pass && piglit_check_gl_error(GL_INVALID_ENUM);
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass && piglit_check_gl_error(GL_INVALID_ENUM);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_ENUM error is "
"generated if any value in bufs is not one of "
"the values in tables 17.5 or 17.6.");
/*
* (cont on error out of 17.5 or 17.6) Specifically for the default
* framebuffer:
* From OpenGL 4.5 spec, page 492 (515 PDF)
* "If the default framebuffer is affected, then each of the
* constants must be one of the values listed in table 17.6
* or the special value BACK .""
*
* And:
*"An INVALID_OPERATION error is generated if the default
* framebuffer is affected and any value in bufs is a
* constant (other than NONE or BACK) that does not indicate
* one of the color buffers allocated to the default
* framebuffer."
*
* So for the default framebuffer, and that table, we expect
* GL_NO_ERROR or GL_INVALID_OPERATION.
*/
subtest_pass = true;
for (i = 0; i < ARRAY_SIZE(table_17_6_and_back); i++) {
GLenum err = 0;
glNamedFramebufferDrawBuffers(default_framebuffer, 1,
&table_17_6_and_back[i]);
/* We manually check glGetError instead of relying on
* piglit_check_gl_error like in other subtests
* because for subtests that checks several enums, we
* are interested on getting which one failed. That
* makes debugging easier.
*/
err = glGetError();
if (err != GL_NO_ERROR && err != GL_INVALID_OPERATION) {
printf("Expected GL_NO_ERROR or GL_INVALID_OPERATION "
"with %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6_and_back[i]),
piglit_get_gl_error_name(err));
subtest_pass = false;
}
}
/* For that spec paragraph, we also test enums from table
* 17.5. They should return INVALID_OPERATION, as after all,
* they are not allocated to the default framebuffer. */
one_buf = GL_COLOR_ATTACHMENT0;
glNamedFramebufferDrawBuffers(default_framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_INVALID_OPERATION);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "If the default framebuffer"
" is affected, then each of the constants must "
"be one of the values listed in table 17.6 or "
"the special value BACK. INVALID_OPERATION error"
" is generated if the default framebuffer is "
"affected and any value in bufs is a constant "
"(other than NONE or BACK ) that does not indicate "
"one of the color buffers allocated to the default"
" framebuffer.");
/* (cont default framebuffer)
* From OpenGL 4.5 spec:
* "When BACK is used, n must be 1 and color values are
* written into the left buffer for single-buffered
* contexts, or into the back left buffer for
* double-buffered contexts"
*
* From the error table:
* "An INVALID_OPERATION error is generated if any value in
* bufs is BACK , and n is not one."
*
*/
glNamedFramebufferDrawBuffers(default_framebuffer, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "(default framebuffer)"
" An INVALID_OPERATION error is generated if any "
"value in bufs is BACK, and n is not one.");
/*
* Now, specifically for a framebuffer object:
* "If a framebuffer object is affected, then each of the
* constants must be one of the values listed in table 17.5."
*
* 17.5 is GL_NONE, and COLOR_ATTACHMENTi, where i <
* MAX_COLOR_ATTACHMENTS - 1
*/
int max_attachments;
glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &max_attachments);
subtest_pass = true;
for (i = 0; i < max_attachments; i++) {
one_buf = GL_COLOR_ATTACHMENT0 + i;
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_NO_ERROR);
}
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "If a framebuffer object is "
"affected, then each of constants must be one of the "
"values listed in table 17.5.");
/*
* "An INVALID_OPERATION error is generated if a framebuffer
* object is affected and any value in bufs is a constant
* from table 17.6, or COLOR_ATTACHMENTm where m is greater
* than or equal to the value of MAX_COLOR_ATTACHMENTS."
*/
subtest_pass = true;
/* Starting at 1, as GL_NONE is valid */
for (i = 1; i < ARRAY_SIZE(table_17_6); i++) {
GLenum err = 0;
glNamedFramebufferDrawBuffers(framebuffer, 1, &table_17_6[i]);
err = glGetError();
if (err != GL_INVALID_OPERATION) {
printf("Expected GL_INVALID_OPERATION with"
" %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6[i]),
piglit_get_gl_error_name(err));
subtest_pass = false;
}
}
one_buf = GL_COLOR_ATTACHMENT0 + max_attachments;
glNamedFramebufferDrawBuffers(framebuffer, 1, &one_buf);
subtest_pass = subtest_pass &&
piglit_check_gl_error(GL_INVALID_OPERATION);
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_OPERATION error is "
"generated if a framebuffer object is affected and any "
"value in bufs is a constant from table 17.6, or "
"COLOR_ATTACHMENTm where m is greater than or equal "
"to the value of MAX_COLOR_ATTACHMENTS.");
/*
* "An INVALID_OPERATION error is generated if a buffer other
* than NONE is specified more than once in the array pointed
* to by bufs"
*/
bufs[0] = bufs[1] = GL_FRONT_LEFT;
glNamedFramebufferDrawBuffers(framebuffer, 2, bufs);
PIGLIT_SUBTEST_ERROR(GL_INVALID_OPERATION, pass, "INVALID_OPERATION error "
"is generated if a buffer other than NONE is specified "
"more than once in the array pointed to by bufs.");
/*
* From OpenGL 4.5 spec:
* "An INVALID_ENUM error is generated if any value in bufs is
* FRONT, LEFT, RIGHT, or FRONT_AND_BACK . This restriction
* applies to both the default framebuffer and framebuffer
* objects, and exists because these constants may themselves
* refer to multiple buffers, as shown in table 17.4."
*/
subtest_pass = true;
for (i = 0; i < ARRAY_SIZE(multiple_buffers); i++) {
GLenum err = 0;
bool local_pass = true;
glNamedFramebufferDrawBuffers(default_framebuffer, 1,
&multiple_buffers[i]);
err = glGetError();
local_pass = local_pass && (err == GL_INVALID_ENUM);
glNamedFramebufferDrawBuffers(framebuffer, 1,
&multiple_buffers[i]);
err = glGetError();
local_pass = local_pass && (err == GL_INVALID_ENUM);
if (!local_pass)
printf("Expected GL_INVALID_ENUM with"
" %s but received: %s\n",
piglit_get_gl_enum_name(table_17_6_and_back[i]),
piglit_get_gl_error_name(err));
subtest_pass = subtest_pass && local_pass;
}
PIGLIT_SUBTEST_CONDITION(subtest_pass, pass, "INVALID_ENUM error is "
"generated if any value in bufs is FRONT, LEFT,"
" RIGHT, or FRONT_AND_BACK ");
/* clean up */
glDeleteFramebuffers(1, &framebuffer);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
void AbstractFramebuffer::drawBuffersImplementationDSA(const GLsizei count, const GLenum* const buffers) {
glNamedFramebufferDrawBuffers(_id, count, buffers);
}
void drawBuffer1() const{
constexpr const static GLenum draws_[]{GL_COLOR_ATTACHMENT1 };
glNamedFramebufferDrawBuffers(fbo_,1,draws_);
}
void kit::PixelBuffer::setDrawBuffers(std::vector< uint32_t > drawBuffers)
{
KIT_GL(glNamedFramebufferDrawBuffers(this->m_glHandle, (GLsizei)drawBuffers.size(), &drawBuffers[0]));
}
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();
}
void update() override {
gl::GLTexture* gltexture = nullptr;
TexturePointer surface;
if (_gpuObject.getColorStamps() != _colorStamps) {
if (_gpuObject.hasColor()) {
_colorBuffers.clear();
static const GLenum colorAttachments[] = {
GL_COLOR_ATTACHMENT0,
GL_COLOR_ATTACHMENT1,
GL_COLOR_ATTACHMENT2,
GL_COLOR_ATTACHMENT3,
GL_COLOR_ATTACHMENT4,
GL_COLOR_ATTACHMENT5,
GL_COLOR_ATTACHMENT6,
GL_COLOR_ATTACHMENT7,
GL_COLOR_ATTACHMENT8,
GL_COLOR_ATTACHMENT9,
GL_COLOR_ATTACHMENT10,
GL_COLOR_ATTACHMENT11,
GL_COLOR_ATTACHMENT12,
GL_COLOR_ATTACHMENT13,
GL_COLOR_ATTACHMENT14,
GL_COLOR_ATTACHMENT15 };
int unit = 0;
for (auto& b : _gpuObject.getRenderBuffers()) {
surface = b._texture;
if (surface) {
gltexture = gl::GLTexture::sync<GL45Backend::GL45Texture>(*_backend.lock().get(), surface, false); // Grab the gltexture and don't transfer
} else {
gltexture = nullptr;
}
if (gltexture) {
glNamedFramebufferTexture(_id, colorAttachments[unit], gltexture->_texture, 0);
_colorBuffers.push_back(colorAttachments[unit]);
} else {
glNamedFramebufferTexture(_id, colorAttachments[unit], 0, 0);
}
unit++;
}
}
_colorStamps = _gpuObject.getColorStamps();
}
GLenum attachement = GL_DEPTH_STENCIL_ATTACHMENT;
if (!_gpuObject.hasStencil()) {
attachement = GL_DEPTH_ATTACHMENT;
} else if (!_gpuObject.hasDepth()) {
attachement = GL_STENCIL_ATTACHMENT;
}
if (_gpuObject.getDepthStamp() != _depthStamp) {
auto surface = _gpuObject.getDepthStencilBuffer();
if (_gpuObject.hasDepthStencil() && surface) {
gltexture = gl::GLTexture::sync<GL45Backend::GL45Texture>(*_backend.lock().get(), surface, false); // Grab the gltexture and don't transfer
}
if (gltexture) {
glNamedFramebufferTexture(_id, attachement, gltexture->_texture, 0);
} else {
glNamedFramebufferTexture(_id, attachement, 0, 0);
}
_depthStamp = _gpuObject.getDepthStamp();
}
// Last but not least, define where we draw
if (!_colorBuffers.empty()) {
glNamedFramebufferDrawBuffers(_id, (GLsizei)_colorBuffers.size(), _colorBuffers.data());
} else {
glNamedFramebufferDrawBuffer(_id, GL_NONE);
}
// Now check for completness
_status = glCheckNamedFramebufferStatus(_id, GL_DRAW_FRAMEBUFFER);
// restore the current framebuffer
checkStatus(GL_DRAW_FRAMEBUFFER);
}
void Framebuffer::drawBuffers(const Attachment* attachments, u32 count) const
{
glNamedFramebufferDrawBuffers(m_id, count, (const u32*)attachments);
}
void update() override {
gl::GLTexture* gltexture = nullptr;
TexturePointer surface;
if (_gpuObject.getColorStamps() != _colorStamps) {
if (_gpuObject.hasColor()) {
_colorBuffers.clear();
static const GLenum colorAttachments[] = {
GL_COLOR_ATTACHMENT0,
GL_COLOR_ATTACHMENT1,
GL_COLOR_ATTACHMENT2,
GL_COLOR_ATTACHMENT3,
GL_COLOR_ATTACHMENT4,
GL_COLOR_ATTACHMENT5,
GL_COLOR_ATTACHMENT6,
GL_COLOR_ATTACHMENT7,
GL_COLOR_ATTACHMENT8,
GL_COLOR_ATTACHMENT9,
GL_COLOR_ATTACHMENT10,
GL_COLOR_ATTACHMENT11,
GL_COLOR_ATTACHMENT12,
GL_COLOR_ATTACHMENT13,
GL_COLOR_ATTACHMENT14,
GL_COLOR_ATTACHMENT15 };
int unit = 0;
auto backend = _backend.lock();
for (auto& b : _gpuObject.getRenderBuffers()) {
surface = b._texture;
if (surface) {
Q_ASSERT(TextureUsageType::RENDERBUFFER == surface->getUsageType());
gltexture = backend->syncGPUObject(surface);
} else {
gltexture = nullptr;
}
if (gltexture) {
if (gltexture->_target == GL_TEXTURE_2D) {
glNamedFramebufferTexture(_id, colorAttachments[unit], gltexture->_texture, 0);
} else if (gltexture->_target == GL_TEXTURE_2D_MULTISAMPLE) {
glNamedFramebufferTexture(_id, colorAttachments[unit], gltexture->_texture, 0);
} else {
glNamedFramebufferTextureLayer(_id, colorAttachments[unit], gltexture->_texture, 0, b._subresource);
}
_colorBuffers.push_back(colorAttachments[unit]);
} else {
glNamedFramebufferTexture(_id, colorAttachments[unit], 0, 0);
}
unit++;
}
}
_colorStamps = _gpuObject.getColorStamps();
}
GLenum attachement = GL_DEPTH_STENCIL_ATTACHMENT;
if (!_gpuObject.hasStencil()) {
attachement = GL_DEPTH_ATTACHMENT;
} else if (!_gpuObject.hasDepth()) {
attachement = GL_STENCIL_ATTACHMENT;
}
if (_gpuObject.getDepthStamp() != _depthStamp) {
auto surface = _gpuObject.getDepthStencilBuffer();
auto backend = _backend.lock();
if (_gpuObject.hasDepthStencil() && surface) {
Q_ASSERT(TextureUsageType::RENDERBUFFER == surface->getUsageType());
gltexture = backend->syncGPUObject(surface);
}
if (gltexture) {
if (gltexture->_target == GL_TEXTURE_2D) {
glNamedFramebufferTexture(_id, attachement, gltexture->_texture, 0);
}
else if (gltexture->_target == GL_TEXTURE_2D_MULTISAMPLE) {
glNamedFramebufferTexture(_id, attachement, gltexture->_texture, 0);
} else {
glNamedFramebufferTextureLayer(_id, attachement, gltexture->_texture, 0,
_gpuObject.getDepthStencilBufferSubresource());
}
} else {
glNamedFramebufferTexture(_id, attachement, 0, 0);
}
_depthStamp = _gpuObject.getDepthStamp();
}
// Last but not least, define where we draw
if (!_colorBuffers.empty()) {
glNamedFramebufferDrawBuffers(_id, (GLsizei)_colorBuffers.size(), _colorBuffers.data());
} else {
glNamedFramebufferDrawBuffer(_id, GL_NONE);
}
// Now check for completness
_status = glCheckNamedFramebufferStatus(_id, GL_DRAW_FRAMEBUFFER);
// restore the current framebuffer
checkStatus();
}