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#include <asura-utils/exceptions/exception.h>
#include "../core_config.h"
#include "shader.h"
#include "image.h"
#include "gfx_device.h"
using namespace AEIO;
using namespace AEImage;
namespace AsuraEngine
{
namespace Graphics
{
Image::Image()
: m_Width(0)
, m_Height(0)
{
}
Image::~Image()
{
}
bool Image::Load(ImageData* imgData)
{
if (!imgData) return false;
if (m_TexID == 0)
{
glGenTextures(1, &m_TexID);
if (m_TexID == 0)
throw Exception("OpenGL glGenTextures failed.");
}
glBindTexture(GL_TEXTURE_2D, m_TexID);
imgData->Lock();
int width = imgData->width;
int height = imgData->height;
TextureFormat tf = ConvertColorFormat(imgData->format);
glTexImage2D(
GL_TEXTURE_2D
, 0
, tf.internalformat
, width, height
, 0
, tf.externalformat
, tf.type
, imgData->pixels
);
m_Width = imgData->width;
m_Height = imgData->height;
imgData->Unlock();
GLenum err = glGetError();
if (err != GL_NO_ERROR)
throw Exception("OpenGL glTexImage2D cause error, error code=%d", err);
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
bool Image::Load(ImageData* imgData, const AEMath::Vector2i& pos)
{
if (!imgData) return false;
glBindTexture(GL_TEXTURE_2D, m_TexID);
imgData->Lock();
int width = imgData->width;
int height = imgData->height;
TextureFormat tf = ConvertColorFormat(imgData->format);
glTexSubImage2D(
GL_TEXTURE_2D
, 0
, pos.x
, pos.y
, imgData->width
, imgData->height
, tf.externalformat
, tf.type
, imgData->pixels
);
imgData->Unlock();
GLenum err = glGetError();
if (err != GL_NO_ERROR)
throw Exception("OpenGL glTexSubImage2D cause error, error code=%d", err);
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
uint32 Image::GetWidth()
{
return m_Width;
}
uint32 Image::GetHeight()
{
return m_Height;
}
} // Graphics
} // AsuraEngine
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