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#include "GLUniformBlockCache.h"
#include "GLUniformBlock.h"
#include "../../../Main.h"
namespace nCine
{
GLUniformBlockCache::GLUniformBlockCache()
: uniformBlock_(nullptr), dataPointer_(nullptr), usedSize_(0)
{
}
GLUniformBlockCache::GLUniformBlockCache(GLUniformBlock* uniformBlock)
: uniformBlock_(uniformBlock), dataPointer_(nullptr), usedSize_(0)
{
DEATH_ASSERT(uniformBlock);
usedSize_ = uniformBlock->GetSize();
static_assert(UniformHashSize >= GLUniformBlock::BlockUniformHashSize, "Uniform cache is smaller than the number of uniforms");
for (const GLUniform& uniform : uniformBlock->blockUniforms_) {
GLUniformCache uniformCache(&uniform);
uniformCaches_[uniform.GetName()] = uniformCache;
}
}
GLuint GLUniformBlockCache::GetIndex() const
{
GLuint index = 0;
if (uniformBlock_ != nullptr) {
index = uniformBlock_->GetIndex();
}
return index;
}
GLuint GLUniformBlockCache::GetBindingIndex() const
{
GLuint bindingIndex = 0;
if (uniformBlock_ != nullptr) {
bindingIndex = uniformBlock_->GetBindingIndex();
}
return bindingIndex;
}
GLint GLUniformBlockCache::GetSize() const
{
GLint size = 0;
if (uniformBlock_ != nullptr) {
size = uniformBlock_->GetSize();
}
return size;
}
std::uint8_t GLUniformBlockCache::GetAlignAmount() const
{
std::uint8_t alignAmount = 0;
if (uniformBlock_ != nullptr) {
alignAmount = uniformBlock_->GetAlignAmount();
}
return alignAmount;
}
void GLUniformBlockCache::SetDataPointer(GLubyte* dataPointer)
{
dataPointer_ = dataPointer;
for (GLUniformCache& uniformCache : uniformCaches_) {
uniformCache.SetDataPointer(dataPointer_ + uniformCache.GetUniform()->GetOffset());
}
}
void GLUniformBlockCache::SetUsedSize(GLint usedSize)
{
if (usedSize >= 0) {
usedSize_ = usedSize;
}
}
bool GLUniformBlockCache::CopyData(std::uint32_t destIndex, const GLubyte* src, std::uint32_t numBytes)
{
if (destIndex + numBytes > std::uint32_t(GetSize()) || numBytes == 0 || src == nullptr || dataPointer_ == nullptr) {
return false;
}
std::memcpy(&dataPointer_[destIndex], src, numBytes);
return true;
}
GLUniformCache* GLUniformBlockCache::GetUniform(StringView name)
{
return uniformCaches_.find(String::nullTerminatedView(name));
}
void GLUniformBlockCache::SetBlockBinding(GLuint blockBinding)
{
if (uniformBlock_) {
uniformBlock_->SetBlockBinding(blockBinding);
}
}
}
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