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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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 <GLcommon/TextureUtils.h>
#include <GLcommon/GLESmacros.h>
#include <GLcommon/GLDispatch.h>
#include <GLcommon/GLESvalidate.h>
#include <stdio.h>
#include <cmath>
int getCompressedFormats(int* formats){
if(formats){
//Palette
formats[0] = GL_PALETTE4_RGBA8_OES;
formats[1] = GL_PALETTE4_RGBA4_OES;
formats[2] = GL_PALETTE8_RGBA8_OES;
formats[3] = GL_PALETTE8_RGBA4_OES;
formats[4] = GL_PALETTE4_RGB8_OES;
formats[5] = GL_PALETTE8_RGB8_OES;
formats[6] = GL_PALETTE4_RGB5_A1_OES;
formats[7] = GL_PALETTE8_RGB5_A1_OES;
formats[8] = GL_PALETTE4_R5_G6_B5_OES;
formats[9] = GL_PALETTE8_R5_G6_B5_OES;
//ETC
formats[MAX_SUPPORTED_PALETTE] = GL_ETC1_RGB8_OES;
}
return MAX_SUPPORTED_PALETTE + MAX_ETC_SUPPORTED;
}
void doCompressedTexImage2D(GLEScontext * ctx, GLenum target, GLint level,
GLenum internalformat, GLsizei width,
GLsizei height, GLint border,
GLsizei imageSize, const GLvoid* data, void * funcPtr)
{
/* XXX: This is just a hack to fix the resolve of glTexImage2D problem
It will be removed when we'll no longer link against ligGL */
typedef void (GLAPIENTRY *glTexImage2DPtr_t ) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
glTexImage2DPtr_t glTexImage2DPtr;
glTexImage2DPtr = (glTexImage2DPtr_t)funcPtr;
switch (internalformat) {
case GL_ETC1_RGB8_OES:
{
GLint format = GL_RGB;
GLint type = GL_UNSIGNED_BYTE;
GLsizei compressedSize = etc1_get_encoded_data_size(width, height);
SET_ERROR_IF((compressedSize > imageSize), GL_INVALID_VALUE);
const int32_t align = ctx->getUnpackAlignment()-1;
const int32_t bpr = ((width * 3) + align) & ~align;
const size_t size = bpr * height;
etc1_byte* pOut = new etc1_byte[size];
int res = etc1_decode_image((const etc1_byte*)data, pOut, width, height, 3, bpr);
SET_ERROR_IF(res!=0, GL_INVALID_VALUE);
glTexImage2DPtr(target,level,format,width,height,border,format,type,pOut);
delete [] pOut;
}
break;
case GL_PALETTE4_RGB8_OES:
case GL_PALETTE4_RGBA8_OES:
case GL_PALETTE4_R5_G6_B5_OES:
case GL_PALETTE4_RGBA4_OES:
case GL_PALETTE4_RGB5_A1_OES:
case GL_PALETTE8_RGB8_OES:
case GL_PALETTE8_RGBA8_OES:
case GL_PALETTE8_R5_G6_B5_OES:
case GL_PALETTE8_RGBA4_OES:
case GL_PALETTE8_RGB5_A1_OES:
{
SET_ERROR_IF(level > log2(ctx->getMaxTexSize()) ||
border !=0 || level > 0 ||
!GLESvalidate::texImgDim(width,height,ctx->getMaxTexSize()+2),GL_INVALID_VALUE)
int nMipmaps = -level + 1;
GLsizei tmpWidth = width;
GLsizei tmpHeight = height;
for(int i = 0; i < nMipmaps ; i++)
{
GLenum uncompressedFrmt;
unsigned char* uncompressed = uncompressTexture(internalformat,uncompressedFrmt,width,height,imageSize,data,i);
glTexImage2DPtr(target,i,uncompressedFrmt,tmpWidth,tmpHeight,border,uncompressedFrmt,GL_UNSIGNED_BYTE,uncompressed);
tmpWidth/=2;
tmpHeight/=2;
delete[] uncompressed;
}
}
break;
default:
SET_ERROR_IF(1, GL_INVALID_ENUM);
break;
}
}
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