mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-02 00:00:07 +00:00
28f2574bc5
This introduces an internal glLoader library which allows most of the implementation to be agnostic about the implementation of the GL loading library. Specifically, this removes references to the GLEW headers and libraries from the rest of the source code and build system.
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
//
|
|
// Copyright 2013 Pixar
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "Apache License")
|
|
// with the following modification; you may not use this file except in
|
|
// compliance with the Apache License and the following modification to it:
|
|
// Section 6. Trademarks. is deleted and replaced with:
|
|
//
|
|
// 6. Trademarks. This License does not grant permission to use the trade
|
|
// names, trademarks, service marks, or product names of the Licensor
|
|
// and its affiliates, except as required to comply with Section 4(c) of
|
|
// the License and to reproduce the content of the NOTICE file.
|
|
//
|
|
// You may obtain a copy of the Apache License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the Apache License with the above modification is
|
|
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the Apache License for the specific
|
|
// language governing permissions and limitations under the Apache License.
|
|
//
|
|
|
|
#ifndef OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
|
|
#define OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
|
|
|
|
#include "glLoader.h"
|
|
|
|
#include <opensubdiv/osd/nonCopyable.h>
|
|
|
|
#include <Ptexture.h>
|
|
#include <stdlib.h>
|
|
|
|
class GLPtexMipmapTexture : OpenSubdiv::Osd::NonCopyable<GLPtexMipmapTexture> {
|
|
public:
|
|
static GLPtexMipmapTexture * Create(PtexTexture * reader,
|
|
int maxLevels=-1,
|
|
size_t targetMemory=0);
|
|
|
|
/// Returns GLSL shader snippet to fetch ptex
|
|
static const char *GetShaderSource();
|
|
|
|
/// Returns the texture buffer containing the layout of the ptex faces
|
|
/// in the texels texture array.
|
|
GLuint GetLayoutTextureBuffer() const { return _layout; }
|
|
|
|
/// Returns the texels texture array.
|
|
GLuint GetTexelsTexture() const { return _texels; }
|
|
|
|
/// Returns the amount of allocated memory (in bytes)
|
|
size_t GetMemoryUsage() const { return _memoryUsage; }
|
|
|
|
~GLPtexMipmapTexture();
|
|
|
|
private:
|
|
GLPtexMipmapTexture();
|
|
|
|
GLsizei _width, // width / height / depth of the 3D texel buffer
|
|
_height,
|
|
_depth;
|
|
|
|
GLint _format; // texel color format
|
|
|
|
GLuint _layout, // per-face lookup table
|
|
_texels; // texel data
|
|
|
|
size_t _memoryUsage; // total amount of memory used (estimate)
|
|
};
|
|
|
|
#endif // OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
|