blob: 0e1ea8cb4dcf7252a71d16ef9f826199aadf18a5 [file] [log] [blame]
/*
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "glimp/gles/texture.h"
#include "nb/pointer_arithmetic.h"
#include "nb/rect.h"
namespace glimp {
namespace gles {
Texture::Texture(nb::scoped_ptr<TextureImpl> impl)
: impl_(impl.Pass()),
texture_allocated_(false),
bound_to_surface_(NULL) {}
void Texture::Initialize(GLint level,
PixelFormat pixel_format,
GLsizei width,
GLsizei height) {
width_ = static_cast<int>(width);
height_ = static_cast<int>(height);
pixel_format_ = pixel_format;
impl_->Initialize(level, pixel_format_, width_, height_);
texture_allocated_ = true;
}
void Texture::UpdateData(GLint level,
GLint xoffset,
GLint yoffset,
GLsizei width,
GLsizei height,
int pitch_in_bytes,
const GLvoid* pixels) {
SB_DCHECK(pixels != NULL);
impl_->UpdateData(level, nb::Rect<int>(xoffset, yoffset, width, height),
pitch_in_bytes, pixels);
}
void Texture::UpdateDataFromBuffer(
GLint level,
GLint xoffset,
GLint yoffset,
GLsizei width,
GLsizei height,
int pitch_in_bytes,
const nb::scoped_refptr<Buffer>& pixel_unpack_buffer,
uintptr_t buffer_offset) {
SB_DCHECK(pixel_unpack_buffer);
impl_->UpdateDataFromBuffer(
level, nb::Rect<int>(xoffset, yoffset, width, height), pitch_in_bytes,
pixel_unpack_buffer, buffer_offset);
}
bool Texture::BindToEGLSurface(egl::Surface* surface) {
if (bound_to_surface_ != NULL) {
SB_DLOG(WARNING) << "A EGLSurface is already bound to this texture.";
return false;
}
width_ = surface->GetWidth();
height_ = surface->GetHeight();
SB_DCHECK(surface->GetTextureFormat() == EGL_TEXTURE_RGBA);
pixel_format_ = kPixelFormatRGBA8;
texture_allocated_ = true;
impl_->BindToEGLSurface(surface);
bound_to_surface_ = surface;
return true;
}
bool Texture::ReleaseFromEGLSurface(egl::Surface* surface) {
if (bound_to_surface_ != surface) {
SB_DLOG(WARNING) << "Attempting to release a surface that this texture was "
"not bound to.";
return false;
}
width_ = 0;
height_ = 0;
pixel_format_ = kPixelFormatInvalid;
texture_allocated_ = false;
bound_to_surface_ = NULL;
impl_->Initialize(0, kPixelFormatInvalid, 0, 0);
return true;
}
void Texture::ReadPixelsAsRGBA8(GLint x,
GLint y,
GLsizei width,
GLsizei height,
int pitch_in_bytes,
GLvoid* pixels) {
impl_->ReadPixelsAsRGBA8(nb::Rect<int>(x, y, width, height), pitch_in_bytes,
pixels);
}
bool Texture::CanBeAttachedToFramebuffer() const {
return impl_->CanBeAttachedToFramebuffer();
}
} // namespace gles
} // namespace glimp