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#include "GLVertexFormat.h"
#include "GLBufferObject.h"
#include "../IGfxCapabilities.h"
#include "../../ServiceLocator.h"
#include "../../../Main.h"
namespace nCine
{
GLVertexFormat::Attribute::Attribute()
: enabled_(false), vbo_(nullptr), index_(0), size_(-1), type_(GL_FLOAT), stride_(0), pointer_(nullptr), baseOffset_(0)
{
}
GLVertexFormat::GLVertexFormat()
: ibo_(nullptr), attributes_(MaxAttributes)
{
}
bool GLVertexFormat::Attribute::operator==(const Attribute& other) const
{
return ((other.enabled_ == false && enabled_ == false) ||
((other.enabled_ == true && enabled_ == true) &&
(other.vbo_ && vbo_ && other.vbo_->GetGLHandle() == vbo_->GetGLHandle()) &&
other.index_ == index_ &&
other.size_ == size_ &&
other.type_ == type_ &&
other.normalized_ == normalized_ &&
other.stride_ == stride_ &&
other.pointer_ == pointer_ &&
other.baseOffset_ == baseOffset_));
}
bool GLVertexFormat::Attribute::operator!=(const Attribute& other) const
{
return !operator==(other);
}
void GLVertexFormat::Attribute::Init(std::uint32_t index, GLint size, GLenum type)
{
enabled_ = true;
vbo_ = nullptr;
index_ = index;
size_ = size;
type_ = type;
normalized_ = GL_FALSE;
stride_ = 0;
pointer_ = nullptr;
baseOffset_ = 0;
}
void GLVertexFormat::Attribute::SetVboParameters(GLsizei stride, const GLvoid* pointer)
{
#if !defined(DEATH_TARGET_EMSCRIPTEN) && !(defined(DEATH_TARGET_APPLE) && defined(DEATH_TARGET_ARM)) && (!defined(WITH_OPENGLES) || (defined(WITH_OPENGLES) && GL_ES_VERSION_3_1))
static const std::int32_t MaxVertexAttribStride = theServiceLocator().GetGfxCapabilities().GetValue(IGfxCapabilities::GLIntValues::MAX_VERTEX_ATTRIB_STRIDE);
if (stride > MaxVertexAttribStride) {
stride_ = MaxVertexAttribStride;
LOGW("Vertex attribute stride ({}) is bigger than the maximum value supported ({})", stride, MaxVertexAttribStride);
} else
#endif
{
stride_ = stride;
}
pointer_ = pointer;
}
void GLVertexFormat::Define()
{
for (std::uint32_t i = 0; i < MaxAttributes; i++) {
if (attributes_[i].enabled_) {
attributes_[i].vbo_->Bind();
glEnableVertexAttribArray(attributes_[i].index_);
#if (defined(WITH_OPENGLES) && !GL_ES_VERSION_3_2) || defined(DEATH_TARGET_EMSCRIPTEN)
const GLubyte* initialPointer = reinterpret_cast<const GLubyte*>(attributes_[i].pointer_);
const GLvoid* pointer = reinterpret_cast<const GLvoid*>(initialPointer + attributes_[i].baseOffset_);
#else
const GLvoid* pointer = attributes_[i].pointer_;
#endif
switch (attributes_[i].type_) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
case GL_SHORT:
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
if (attributes_[i].normalized_) {
glVertexAttribPointer(attributes_[i].index_, attributes_[i].size_, attributes_[i].type_, GL_TRUE, attributes_[i].stride_, pointer);
} else {
glVertexAttribIPointer(attributes_[i].index_, attributes_[i].size_, attributes_[i].type_, attributes_[i].stride_, pointer);
}
break;
default:
glVertexAttribPointer(attributes_[i].index_, attributes_[i].size_, attributes_[i].type_, attributes_[i].normalized_, attributes_[i].stride_, pointer);
break;
}
}
}
if (ibo_) {
ibo_->Bind();
}
}
void GLVertexFormat::Reset()
{
for (std::uint32_t i = 0; i < MaxAttributes; i++) {
attributes_[i].enabled_ = false;
}
ibo_ = nullptr;
}
bool GLVertexFormat::operator==(const GLVertexFormat& other) const
{
bool areEqual = (other.ibo_ == ibo_ && other.attributes_.size() == attributes_.size());
// If indices are the same then check attributes too
if (areEqual) {
for (std::uint32_t i = 0; i < attributes_.size(); i++) {
if (other.attributes_[i] != attributes_[i]) {
areEqual = false;
break;
}
}
}
return areEqual;
}
bool GLVertexFormat::operator!=(const GLVertexFormat& other) const
{
return !operator==(other);
}
}
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