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#include "GLBufferObject.h"
#include "GLDebug.h"
#include "../../../Main.h"
#include "../../tracy_opengl.h"
namespace nCine
{
GLHashMap<GLBufferObjectMappingFunc::Size, GLBufferObjectMappingFunc> GLBufferObject::boundBuffers_;
GLuint GLBufferObject::boundIndexBase_[MaxIndexBufferRange];
GLBufferObject::BufferRange GLBufferObject::boundBufferRange_[MaxIndexBufferRange];
GLBufferObject::GLBufferObject(GLenum target)
: glHandle_(0), target_(target), size_(0), mapped_(false)
{
for (std::int32_t i = 0; i < MaxIndexBufferRange; i++)
boundIndexBase_[i] = 0;
glGenBuffers(1, &glHandle_);
GL_LOG_ERRORS();
}
GLBufferObject::~GLBufferObject()
{
if (boundBuffers_[target_] == glHandle_)
Unbind();
glDeleteBuffers(1, &glHandle_);
GL_LOG_ERRORS();
}
bool GLBufferObject::Bind() const
{
if (boundBuffers_[target_] != glHandle_) {
glBindBuffer(target_, glHandle_);
GL_LOG_ERRORS();
boundBuffers_[target_] = glHandle_;
return true;
}
return false;
}
bool GLBufferObject::Unbind() const
{
if (boundBuffers_[target_] != 0) {
glBindBuffer(target_, 0);
GL_LOG_ERRORS();
boundBuffers_[target_] = 0;
return true;
}
return false;
}
void GLBufferObject::BufferData(GLsizeiptr size, const GLvoid* data, GLenum usage)
{
TracyGpuZone("glBufferData");
Bind();
glBufferData(target_, size, data, usage);
GL_LOG_ERRORS();
size_ = size;
}
void GLBufferObject::BufferSubData(GLintptr offset, GLsizeiptr size, const GLvoid* data)
{
TracyGpuZone("glBufferSubData");
Bind();
glBufferSubData(target_, offset, size, data);
GL_LOG_ERRORS();
}
#if !defined(WITH_OPENGLES) && !(defined(DEATH_TARGET_APPLE) && defined(DEATH_TARGET_ARM))
void GLBufferObject::BufferStorage(GLsizeiptr size, const GLvoid* data, GLbitfield flags)
{
TracyGpuZone("glBufferStorage");
Bind();
glBufferStorage(target_, size, data, flags);
GL_LOG_ERRORS();
size_ = size;
}
#endif
void GLBufferObject::BindBufferBase(GLuint index)
{
DEATH_ASSERT(target_ == GL_UNIFORM_BUFFER);
DEATH_ASSERT(index < MaxIndexBufferRange);
if (index >= MaxIndexBufferRange) {
glBindBufferBase(target_, index, glHandle_);
} else if (boundIndexBase_[index] != glHandle_) {
boundBufferRange_[index].glHandle = -1;
boundBufferRange_[index].offset = 0;
boundBufferRange_[index].ptrsize = 0;
boundIndexBase_[index] = glHandle_;
glBindBufferBase(target_, index, glHandle_);
}
GL_LOG_ERRORS();
}
void GLBufferObject::BindBufferRange(GLuint index, GLintptr offset, GLsizei ptrsize)
{
DEATH_ASSERT(target_ == GL_UNIFORM_BUFFER);
DEATH_ASSERT(index < MaxIndexBufferRange);
if (index >= MaxIndexBufferRange) {
glBindBufferRange(target_, index, glHandle_, offset, ptrsize);
} else if (boundBufferRange_[index].glHandle != glHandle_ ||
boundBufferRange_[index].offset != offset ||
boundBufferRange_[index].ptrsize != ptrsize) {
boundIndexBase_[index] = -1;
boundBufferRange_[index].glHandle = glHandle_;
boundBufferRange_[index].offset = offset;
boundBufferRange_[index].ptrsize = ptrsize;
glBindBufferRange(target_, index, glHandle_, offset, ptrsize);
}
GL_LOG_ERRORS();
}
void* GLBufferObject::MapBufferRange(GLintptr offset, GLsizeiptr length, GLbitfield access)
{
FATAL_ASSERT(mapped_ == false);
mapped_ = true;
Bind();
void* result = glMapBufferRange(target_, offset, length, access);
GL_LOG_ERRORS();
return result;
}
void GLBufferObject::FlushMappedBufferRange(GLintptr offset, GLsizeiptr length)
{
FATAL_ASSERT(mapped_ == true);
Bind();
glFlushMappedBufferRange(target_, offset, length);
GL_LOG_ERRORS();
}
GLboolean GLBufferObject::Unmap()
{
FATAL_ASSERT(mapped_ == true);
mapped_ = false;
Bind();
GLboolean result = glUnmapBuffer(target_);
GL_LOG_ERRORS();
return result;
}
#if !defined(WITH_OPENGLES) || (defined(WITH_OPENGLES) && GL_ES_VERSION_3_2)
void GLBufferObject::TexBuffer(GLenum internalformat)
{
FATAL_ASSERT(target_ == GL_TEXTURE_BUFFER);
glTexBuffer(GL_TEXTURE_BUFFER, internalformat, glHandle_);
GL_LOG_ERRORS();
}
#endif
void GLBufferObject::SetObjectLabel(StringView label)
{
GLDebug::SetObjectLabel(GLDebug::LabelTypes::Buffer, glHandle_, label);
}
bool GLBufferObject::BindHandle(GLenum target, GLuint glHandle)
{
if (boundBuffers_[target] != glHandle) {
glBindBuffer(target, glHandle);
GL_LOG_ERRORS();
boundBuffers_[target] = glHandle;
return true;
}
return false;
}
GLuint GLBufferObject::GetBoundHandle(GLenum target)
{
return boundBuffers_[target];
}
}
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