void GLBackend::setResourceTexture(unsigned int slot, const TexturePointer& resourceTexture) {
// check cache before thinking
if (_resource._textures[slot] == resourceTexture) {
return;
}
// One more True texture bound
_stats._RSNumTextureBounded++;
// Always make sure the GLObject is in sync
GLTexture* object = syncGPUObject(resourceTexture);
if (object) {
GLuint to = object->_texture;
GLuint target = object->_target;
glActiveTexture(GL_TEXTURE0 + slot);
glBindTexture(target, to);
(void)CHECK_GL_ERROR();
_resource._textures[slot] = resourceTexture;
_stats._RSAmountTextureMemoryBounded += (int)object->size();
} else {
releaseResourceTexture(slot);
return;
}
}
void GLBackend::do_setResourceTexture(const Batch& batch, size_t paramOffset) {
GLuint slot = batch._params[paramOffset + 1]._uint;
if (slot >= (GLuint) MAX_NUM_RESOURCE_TEXTURES) {
// "GLBackend::do_setResourceTexture: Trying to set a resource Texture at slot #" + slot + " which doesn't exist. MaxNumResourceTextures = " + getMaxNumResourceTextures());
return;
}
TexturePointer resourceTexture = batch._textures.get(batch._params[paramOffset + 0]._uint);
if (!resourceTexture) {
releaseResourceTexture(slot);
return;
}
// check cache before thinking
if (_resource._textures[slot] == resourceTexture) {
return;
}
// One more True texture bound
_stats._RSNumTextureBounded++;
// Always make sure the GLObject is in sync
GLTexture* object = syncGPUObject(resourceTexture);
if (object) {
GLuint to = object->_texture;
GLuint target = object->_target;
glActiveTexture(GL_TEXTURE0 + slot);
glBindTexture(target, to);
(void) CHECK_GL_ERROR();
_resource._textures[slot] = resourceTexture;
_stats._RSAmountTextureMemoryBounded += object->size();
} else {
releaseResourceTexture(slot);
return;
}
}