1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #include <GLcommon/TextureUtils.h> 17 #include <GLcommon/GLESmacros.h> 18 #include <GLcommon/GLDispatch.h> 19 #include <GLcommon/GLESvalidate.h> 20 #include <stdio.h> 21 #include <cmath> 22 23 int getCompressedFormats(int* formats){ 24 if(formats){ 25 //Palette 26 formats[0] = GL_PALETTE4_RGBA8_OES; 27 formats[1] = GL_PALETTE4_RGBA4_OES; 28 formats[2] = GL_PALETTE8_RGBA8_OES; 29 formats[3] = GL_PALETTE8_RGBA4_OES; 30 formats[4] = GL_PALETTE4_RGB8_OES; 31 formats[5] = GL_PALETTE8_RGB8_OES; 32 formats[6] = GL_PALETTE4_RGB5_A1_OES; 33 formats[7] = GL_PALETTE8_RGB5_A1_OES; 34 formats[8] = GL_PALETTE4_R5_G6_B5_OES; 35 formats[9] = GL_PALETTE8_R5_G6_B5_OES; 36 //ETC 37 formats[MAX_SUPPORTED_PALETTE] = GL_ETC1_RGB8_OES; 38 } 39 return MAX_SUPPORTED_PALETTE + MAX_ETC_SUPPORTED; 40 } 41 42 void doCompressedTexImage2D(GLEScontext * ctx, GLenum target, GLint level, 43 GLenum internalformat, GLsizei width, 44 GLsizei height, GLint border, 45 GLsizei imageSize, const GLvoid* data, void * funcPtr) 46 { 47 /* XXX: This is just a hack to fix the resolve of glTexImage2D problem 48 It will be removed when we'll no longer link against ligGL */ 49 typedef void (GLAPIENTRY *glTexImage2DPtr_t ) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels); 50 glTexImage2DPtr_t glTexImage2DPtr; 51 glTexImage2DPtr = (glTexImage2DPtr_t)funcPtr; 52 53 switch (internalformat) { 54 case GL_ETC1_RGB8_OES: 55 { 56 GLint format = GL_RGB; 57 GLint type = GL_UNSIGNED_BYTE; 58 59 GLsizei compressedSize = etc1_get_encoded_data_size(width, height); 60 SET_ERROR_IF((compressedSize > imageSize), GL_INVALID_VALUE); 61 62 const int32_t align = ctx->getUnpackAlignment()-1; 63 const int32_t bpr = ((width * 3) + align) & ~align; 64 const size_t size = bpr * height; 65 66 etc1_byte* pOut = new etc1_byte[size]; 67 int res = etc1_decode_image((const etc1_byte*)data, pOut, width, height, 3, bpr); 68 SET_ERROR_IF(res!=0, GL_INVALID_VALUE); 69 glTexImage2DPtr(target,level,format,width,height,border,format,type,pOut); 70 delete [] pOut; 71 } 72 break; 73 74 case GL_PALETTE4_RGB8_OES: 75 case GL_PALETTE4_RGBA8_OES: 76 case GL_PALETTE4_R5_G6_B5_OES: 77 case GL_PALETTE4_RGBA4_OES: 78 case GL_PALETTE4_RGB5_A1_OES: 79 case GL_PALETTE8_RGB8_OES: 80 case GL_PALETTE8_RGBA8_OES: 81 case GL_PALETTE8_R5_G6_B5_OES: 82 case GL_PALETTE8_RGBA4_OES: 83 case GL_PALETTE8_RGB5_A1_OES: 84 { 85 SET_ERROR_IF(level > log2(ctx->getMaxTexSize()) || 86 border !=0 || level > 0 || 87 !GLESvalidate::texImgDim(width,height,ctx->getMaxTexSize()+2),GL_INVALID_VALUE) 88 89 int nMipmaps = -level + 1; 90 GLsizei tmpWidth = width; 91 GLsizei tmpHeight = height; 92 93 for(int i = 0; i < nMipmaps ; i++) 94 { 95 GLenum uncompressedFrmt; 96 unsigned char* uncompressed = uncompressTexture(internalformat,uncompressedFrmt,width,height,imageSize,data,i); 97 glTexImage2DPtr(target,i,uncompressedFrmt,tmpWidth,tmpHeight,border,uncompressedFrmt,GL_UNSIGNED_BYTE,uncompressed); 98 tmpWidth/=2; 99 tmpHeight/=2; 100 delete[] uncompressed; 101 } 102 } 103 break; 104 105 default: 106 SET_ERROR_IF(1, GL_INVALID_ENUM); 107 break; 108 } 109 } 110