| 1 | /* |
| 2 | Copyright (C) 2003 Rice1964 |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU General Public License |
| 6 | as published by the Free Software Foundation; either version 2 |
| 7 | of the License, or (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | |
| 21 | #include "Config.h" |
| 22 | #include "Debugger.h" |
| 23 | #include "OGLDebug.h" |
| 24 | #include "OGLGraphicsContext.h" |
| 25 | #include "OGLTexture.h" |
| 26 | #include "TextureManager.h" |
| 27 | |
| 28 | #ifdef HAVE_GLES |
| 29 | #define GL_RGBA4 0x8056 |
| 30 | #endif |
| 31 | |
| 32 | COGLTexture::COGLTexture(uint32 dwWidth, uint32 dwHeight, TextureUsage usage) : |
| 33 | CTexture(dwWidth,dwHeight,usage), |
| 34 | m_glFmt(GL_RGBA) |
| 35 | { |
| 36 | // FIXME: If usage is AS_RENDER_TARGET, we need to create pbuffer instead of regular texture |
| 37 | |
| 38 | m_dwTextureFmt = TEXTURE_FMT_A8R8G8B8; // Always use 32bit to load texture |
| 39 | glGenTextures( 1, &m_dwTextureName ); |
| 40 | OPENGL_CHECK_ERRORS; |
| 41 | |
| 42 | // Make the width and height be the power of 2 |
| 43 | uint32 w; |
| 44 | for (w = 1; w < dwWidth; w <<= 1); |
| 45 | m_dwCreatedTextureWidth = w; |
| 46 | for (w = 1; w < dwHeight; w <<= 1); |
| 47 | m_dwCreatedTextureHeight = w; |
| 48 | |
| 49 | if (dwWidth*dwHeight > 256*256) |
| 50 | TRACE4("Large texture: (%d x %d), created as (%d x %d)", |
| 51 | dwWidth, dwHeight,m_dwCreatedTextureWidth,m_dwCreatedTextureHeight); |
| 52 | |
| 53 | m_fYScale = (float)m_dwCreatedTextureHeight/(float)m_dwHeight; |
| 54 | m_fXScale = (float)m_dwCreatedTextureWidth/(float)m_dwWidth; |
| 55 | |
| 56 | m_pTexture = malloc(m_dwCreatedTextureWidth * m_dwCreatedTextureHeight * GetPixelSize()); |
| 57 | //#ifndef HAVE_GLES |
| 58 | |
| 59 | switch( options.textureQuality ) |
| 60 | { |
| 61 | case TXT_QUALITY_DEFAULT: |
| 62 | if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) |
| 63 | m_glFmt = GL_RGBA4; |
| 64 | break; |
| 65 | case TXT_QUALITY_32BIT: |
| 66 | break; |
| 67 | case TXT_QUALITY_16BIT: |
| 68 | m_glFmt = GL_RGBA4; |
| 69 | break; |
| 70 | }; |
| 71 | |
| 72 | //#endif |
| 73 | LOG_TEXTURE(TRACE2("New texture: (%d, %d)", dwWidth, dwHeight)); |
| 74 | } |
| 75 | |
| 76 | COGLTexture::~COGLTexture() |
| 77 | { |
| 78 | // FIXME: If usage is AS_RENDER_TARGET, we need to destroy the pbuffer |
| 79 | |
| 80 | glDeleteTextures(1, &m_dwTextureName ); |
| 81 | OPENGL_CHECK_ERRORS; |
| 82 | free(m_pTexture); |
| 83 | m_pTexture = NULL; |
| 84 | m_dwWidth = 0; |
| 85 | m_dwHeight = 0; |
| 86 | } |
| 87 | |
| 88 | bool COGLTexture::StartUpdate(DrawInfo *di) |
| 89 | { |
| 90 | if (m_pTexture == NULL) |
| 91 | return false; |
| 92 | |
| 93 | di->dwHeight = (uint16)m_dwHeight; |
| 94 | di->dwWidth = (uint16)m_dwWidth; |
| 95 | di->dwCreatedHeight = m_dwCreatedTextureHeight; |
| 96 | di->dwCreatedWidth = m_dwCreatedTextureWidth; |
| 97 | di->lpSurface = m_pTexture; |
| 98 | di->lPitch = GetPixelSize()*m_dwCreatedTextureWidth; |
| 99 | |
| 100 | return true; |
| 101 | } |
| 102 | |
| 103 | void COGLTexture::EndUpdate(DrawInfo *di) |
| 104 | { |
| 105 | COGLGraphicsContext *pcontext = (COGLGraphicsContext *)(CGraphicsContext::g_pGraphicsContext); // we need this to check if the GL extension is avaible |
| 106 | |
| 107 | glBindTexture(GL_TEXTURE_2D, m_dwTextureName); |
| 108 | OPENGL_CHECK_ERRORS; |
| 109 | |
| 110 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| 111 | OPENGL_CHECK_ERRORS; |
| 112 | |
| 113 | // mipmap support |
| 114 | if(options.mipmapping) |
| 115 | { |
| 116 | int m_maximumAnistropy = pcontext->getMaxAnisotropicFiltering(); //if getMaxAnisotropicFiltering() return more than 0, so aniso is supported and maxAnisotropicFiltering is set |
| 117 | |
| 118 | // Set Anisotropic filtering (mipmapping have to be activated, aniso filtering is not effective without) |
| 119 | if( m_maximumAnistropy ) |
| 120 | { |
| 121 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, m_maximumAnistropy); |
| 122 | OPENGL_CHECK_ERRORS; |
| 123 | } |
| 124 | |
| 125 | // Set Mipmap |
| 126 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
| 127 | OPENGL_CHECK_ERRORS; |
| 128 | |
| 129 | #if SDL_VIDEO_OPENGL |
| 130 | // Tell to hardware to generate mipmap (himself) when glTexImage2D is called |
| 131 | glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
| 132 | #elif SDL_VIDEO_OPENGL_ES2 |
| 133 | glGenerateMipmap(GL_TEXTURE_2D); |
| 134 | #endif |
| 135 | OPENGL_CHECK_ERRORS; |
| 136 | } |
| 137 | else |
| 138 | { |
| 139 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| 140 | OPENGL_CHECK_ERRORS; |
| 141 | } |
| 142 | |
| 143 | // Copy the image data from main memory to video card texture memory |
| 144 | #if SDL_VIDEO_OPENGL |
| 145 | #ifdef HAVE_GLES |
| 146 | // first change format BGRA->RGBA and reduce bit if needed |
| 147 | unsigned char* m_glesTex; |
| 148 | if (m_glFmt == GL_RGBA4) { |
| 149 | m_glesTex = (unsigned char*)malloc(m_dwCreatedTextureHeight*m_dwCreatedTextureWidth*2); |
| 150 | unsigned short *p = (unsigned short*)m_glesTex; |
| 151 | unsigned char *f = (unsigned char*)m_pTexture; |
| 152 | for (int j=0; j<m_dwCreatedTextureHeight; j++) |
| 153 | for (int i=0; i<m_dwCreatedTextureWidth; i++) { |
| 154 | // *f = B, *(f+1) = G, *(f+2) = R, *(f+3) = A |
| 155 | // RRRR GGGG BBBB AAAA |
| 156 | *(p++)= ((*(f+2))&0xf0)>>4 | ((*(f+1))&0xf0) | (((*f))&0xf0)<<4 | ((*(f+3))&0xf0)<<8; |
| 157 | f+=4; |
| 158 | } |
| 159 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, m_glesTex); |
| 160 | } else { |
| 161 | m_glesTex = (unsigned char*)malloc(m_dwCreatedTextureHeight*m_dwCreatedTextureWidth*4); |
| 162 | unsigned int *p = (unsigned int*)m_glesTex; |
| 163 | unsigned char *f = (unsigned char*)m_pTexture; |
| 164 | for (int j=0; j<m_dwCreatedTextureHeight; j++) |
| 165 | for (int i=0; i<m_dwCreatedTextureWidth; i++) { |
| 166 | // *f = B, *(f+1) = G, *(f+2) = R, *(f+3) = A |
| 167 | // AAAAAAAA BBBBBBBB GGGGGGGG RRRRRRRR |
| 168 | *(p++)= ((*(f+2))) | ((*(f+1)))<<8 | ((*f))<<16 | ((*(f+3)))<<24; |
| 169 | f+=4; |
| 170 | } |
| 171 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_glesTex); |
| 172 | } |
| 173 | free(m_glesTex); |
| 174 | #else |
| 175 | glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, m_pTexture); |
| 176 | #endif |
| 177 | #elif SDL_VIDEO_OPENGL_ES2 |
| 178 | //GL_BGRA_IMG works on adreno but not inside profiler. |
| 179 | glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_pTexture); |
| 180 | #endif |
| 181 | OPENGL_CHECK_ERRORS; |
| 182 | } |
| 183 | |
| 184 | |
| 185 | // Keep in mind that the real texture is not scaled to fix the created opengl texture yet. |
| 186 | // when the image is need to be scaled, ScaleImageToSurface in CTexure will be called to |
| 187 | // scale the image automatically |
| 188 | |