// -----------------------------------------------------------------------------------------
MaterialPtr::MaterialPtr(const ResourcePtr& r) : CPepeEngineSharedPtr<CPepeEngineMaterial>()
{
ptr = (CPepeEngineMaterial*)r.data();
if (ptr) {
ptr->ref();
}
}
GLuint loadTextureFromPKM(const ResourcePtr& pkmData, int &width, int &height)
{
#ifdef GL_ETC1_RGB8_OES
const unsigned ETC_PKM_HEADER_SIZE = 16;
if (pkmData->data().size() <= ETC_PKM_HEADER_SIZE)
{
LOGE("pkmData is not the right size. expected > %u, is: %zu", ETC_PKM_HEADER_SIZE, pkmData->data().size());
return TEXTURE_LOAD_ERROR;
}
etc1_byte* header = &pkmData->data()[0];
if (!etc1_pkm_is_valid(header))
return TEXTURE_LOAD_ERROR;
width = etc1_pkm_get_width(header);
height = etc1_pkm_get_height(header);
size_t encodedDataSize = etc1_get_encoded_data_size(width, height);
if (pkmData->data().size() != ETC_PKM_HEADER_SIZE + encodedDataSize)
{
LOGE("pkmData is not the right size. expected: %zu, is: %zu", ETC_PKM_HEADER_SIZE + encodedDataSize, pkmData->data().size());
return TEXTURE_LOAD_ERROR;
}
//Now generate the OpenGL texture object
GLuint texture = genTexture();
bindTexture2D(texture);
compressedTexImage2D(GL_ETC1_RGB8_OES, width, height, encodedDataSize, static_cast<GLvoid*> (&pkmData->data()[ETC_PKM_HEADER_SIZE]));
texParameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
texParameter(GL_TEXTURE_MAG_FILTER, GL_NEAREST);
return texture;
#else
LOGE("PKM texture format not supported by this platform");
return TEXTURE_LOAD_ERROR;
#endif
}
