GLVertexBuffer::GLVertexBuffer(GraphicBuffer::Access access,
GraphicBuffer::Usage usage,
uint32 desired_count,
const void* initData,
const vertex_elements_type& format):
GraphicBuffer(access, usage),
mFormat(format),
mMaped(false) {
glGenBuffers(1, &mId);
glBindBuffer(GL_ARRAY_BUFFER, mId);
if(initData) {
CHECK_GL_CALL(glBufferData(GL_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * GetVertexElementsTotalSize(format)),
static_cast<const GLvoid*>(initData),
_usage_to_gl(usage)));
} else {
CHECK_GL_CALL(glBufferData(GL_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * GetVertexElementsTotalSize(format)),
0,
_usage_to_gl(usage)));
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
mCount = desired_count;
}
void GLTexture2DRenderView::onAttached(FrameBuffer& fb, uint32 att) {
mIndex = att - ATT_Color0;
mFBO = checked_cast<GLFrameBuffer*>(&fb)->getGLFBO();
GLGraphicDevice& gd = *checked_cast<GLGraphicDevice*>(&Context::Instance().getGraphicFactory().getGraphicDevice());
gd.bindGLFrameBuffer(mFBO);
#ifndef UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE
CHECK_GL_CALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT + att - ATT_Color0, GL_TEXTURE_2D, mTex, mLevel));
#else
CHECK_GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + att - ATT_Color0, GL_TEXTURE_2D, mTex, mLevel));
#endif
gd.bindGLFrameBuffer(0);
}
void* GLVertexBuffer::map() {
if(access() == None) {
log_error("GLVertexBuffer: trying to map buffer with access = None");
return 0;
}
if(mMaped)
unmap();
GLenum gl_acess = GL_READ_ONLY;
switch (access()) {
case GraphicBuffer::ReadOnly:
gl_acess = GL_READ_ONLY;
break;
case GraphicBuffer::ReadWrite:
gl_acess = GL_READ_WRITE;
break;
case GraphicBuffer::WriteOnly:
gl_acess = GL_WRITE_ONLY;
break;
default:
break;
}
glBindBuffer(GL_ARRAY_BUFFER, mId);
void* p = CHECK_GL_CALL(glMapBuffer(GL_ARRAY_BUFFER, gl_acess));
if(p)
mMaped = true;
return p;
}
void GLFrameBuffer::clear(uint32 flags, const class Color& clr, float depth, int32 stencil) {
GLbitfield glflags = 0;
if(flags & CM_Color) {
glClearColor(clr.r(), clr.g(), clr.b(), clr.a());
glflags |= GL_COLOR_BUFFER_BIT;
}
if(flags & CM_Depth) {
glClearDepth(depth);
glDepthMask(GL_TRUE);
glflags |= GL_DEPTH_BUFFER_BIT;
}
if(flags & CM_Stencil) {
glClearStencil(stencil);
glflags |= GL_STENCIL_BUFFER_BIT;
}
CHECK_GL_CALL(glClear(glflags));
if(flags & CM_Depth)
glDepthMask(GL_FALSE);
}
void GLTexture2DRenderView::clearColor(const Color& clr) {
if(mFBO != 0) {
this->doClear(GL_COLOR_BUFFER_BIT, clr, 0, 0);
} else {
glBindTexture(GL_TEXTURE_2D, mTex);
std::vector<Color> mem_clr(mWidth * mHeight, clr);
CHECK_GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, mLevel, 0, 0, mWidth, mHeight, GL_RGBA, GL_FLOAT, mem_clr.data()));
}
}
void GLIndexBuffer::resize(uint32 desired_count) {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mId);
CHECK_GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * sizeof(uint32)),
0,
usage() == Dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW));
mCount = desired_count;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
void GLVertexBuffer::resize(uint32 desired_count) {
glBindBuffer(GL_ARRAY_BUFFER, mId);
CHECK_GL_CALL(glBufferData(GL_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * GetVertexElementsTotalSize(mFormat)),
0,
usage() == Dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW));
mCount = desired_count;
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void GLDepthStencilView::onDetached(FrameBuffer& fb, uint32 att) {
mFBO = checked_cast<GLFrameBuffer*>(&fb)->getGLFBO();
GLGraphicDevice& gd = *checked_cast<GLGraphicDevice*>(&Context::Instance().getGraphicFactory().getGraphicDevice());
gd.bindGLFrameBuffer(mFBO);
if(mLevel >= 0) {
#ifndef UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE
CHECK_GL_CALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
if(element_format_contains_stencil(mElementFormat))
CHECK_GL_CALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
#else
CHECK_GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
if(element_format_contains_stencil(mElementFormat))
CHECK_GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, 0, 0));
#endif
}
else if(mRBO) {
CHECK_GL_CALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0));
if(element_format_contains_stencil(mElementFormat))
CHECK_GL_CALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0));
}
gd.bindGLFrameBuffer(0);
mFBO = 0;
}
GLDepthStencilView::GLDepthStencilView(const TexturePtr& texture, int32 level):
mTexture(texture),
mLevel(level),
mRBO(0),
mSampleCount(1),
mSampleQuaility(1) {
GLTexture2D* glTexture = (GLTexture2D*)mTexture.get();
mTex = (GLuint)glTexture->getTextureId();
mWidth = glTexture->width(0);
mHeight = glTexture->height(0);
mElementFormat = glTexture->format();
CHECK_GL_CALL(glGenRenderbuffers(1, &mRBO));
if(mRBO) {
CHECK_GL_CALL(glBindRenderbuffer(GL_RENDERBUFFER, mRBO));
if(mSampleCount <= 1 || !glRenderbufferStorageMultisampleEXT) {
CHECK_GL_CALL(glRenderbufferStorage(GL_RENDERBUFFER, element_format_to_gl_format(mElementFormat), mWidth, mHeight));
}
else {
CHECK_GL_CALL(glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, mSampleCount, element_format_to_gl_format(mElementFormat), mWidth, mHeight));
}
}
}
GLIndexBuffer::GLIndexBuffer(GraphicBuffer::Access access,
GraphicBuffer::Usage usage,
uint32 desired_count,
const void* initData):
GraphicBuffer(access, usage),
mMaped(false) {
glGenBuffers(1, &mId);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mId);
if(initData) {
CHECK_GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * sizeof(uint32)),
static_cast<const GLvoid*>(initData),
usage == Dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW));
} else {
CHECK_GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER,
static_cast<GLsizeiptr>(desired_count * sizeof(uint32)),
0,
usage == Dynamic ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW));
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
mCount = desired_count;
}
SharedPtr<uint8> GLFrameBuffer::readFrameBufferData(int32 x, int32 y, uint32 width, uint32 height, ElementFormat format) {
GLint prevBuffer;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &prevBuffer);
#if defined(UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE)
glBindBuffer(GL_FRAMEBUFFER, mFBO);
#else
CHECK_GL_CALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFBO));
#endif
if(width == 0)
width = this->getViewport().width;
if(height == 0)
height = this->getViewport().height;
uint8* texData = new uint8[width * height * GetElementSize(format)];
CHECK_GL_CALL(glReadPixels(x,
y,
width,
height,
element_format_to_gl_format(format),
element_format_to_gl_element_type(format),
texData));
if(glGetError() != GL_NO_ERROR) {
log_error("GLGraphicDevice: error when read pixels");
}
#if defined(UKN_OSX_REQUEST_OPENGL_32_CORE_PROFILE)
CHECK_GL_CALL(glBindBuffer(GL_FRAMEBUFFER, prevBuffer));
#else
CHECK_GL_CALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, prevBuffer));
#endif
return SharedPtr<uint8>(texData);
}
void GLFrameBuffer::onBind() {
GLGraphicDevice& gd = *checked_cast<GLGraphicDevice*>(&Context::Instance().getGraphicFactory().getGraphicDevice());
gd.bindGLFrameBuffer(mFBO);
if(mFBO != 0) {
check_framebuffer_status();
std::vector<GLenum> buffers(mClearViews.size());
for(size_t i=0; i<mClearViews.size(); ++i) {
buffers[i] = static_cast<GLenum>(i + GL_COLOR_ATTACHMENT0_EXT);
}
CHECK_GL_CALL(glDrawBuffers((GLsizei)buffers.size(), &buffers[0]));
} else {
GLenum targets[] = { GL_BACK_LEFT };
glDrawBuffers(1, &targets[0]);
}
}
GLDepthStencilView::GLDepthStencilView(uint32 width, uint32 height, ElementFormat ef, uint32 sampleCount, uint32 sampleQuality):
mLevel(-1),
mRBO(0),
mSampleCount(sampleCount),
mSampleQuaility(sampleQuality) {
mWidth = width;
mHeight = height;
mElementFormat = ef;
CHECK_GL_CALL(glGenRenderbuffers(1, &mRBO));
if(mRBO) {
glBindRenderbuffer(GL_RENDERBUFFER, mRBO);
if(mSampleCount <= 1 || !glRenderbufferStorageMultisampleEXT)
glRenderbufferStorage(GL_RENDERBUFFER, element_format_to_gl_format(ef), width, height);
else
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, mSampleCount, element_format_to_gl_format(ef), width, height);
}
}
void GLVertexBuffer::copyBuffer(const GraphicBufferPtr& to) {
if(to) {
GLVertexBuffer* dest = checked_cast<GLVertexBuffer*>(to.get());
if(glCopyBufferSubData) {
glBindBuffer(GL_COPY_READ_BUFFER, this->getGLBuffer());
glBindBuffer(GL_COPY_WRITE_BUFFER, dest->getGLBuffer());
CHECK_GL_CALL(glCopyBufferSubData(GL_COPY_READ_BUFFER,
GL_COPY_WRITE_BUFFER,
0,
0,
this->count() * GetVertexElementsTotalSize(this->format())));
glBindBuffer(GL_COPY_READ_BUFFER, 0);
glBindBuffer(GL_COPY_WRITE_BUFFER, 0);
} else {
log_error(L"GLVertexBuffer::copyBuffer: GL Copy Buffer Sub Data not supported");
}
}
}
