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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 | COGLTexture::COGLTexture(uint32 dwWidth, uint32 dwHeight, TextureUsage usage) : |
29 | CTexture(dwWidth,dwHeight,usage), |
30 | m_glFmt(GL_RGBA) |
31 | { |
32 | // FIXME: If usage is AS_RENDER_TARGET, we need to create pbuffer instead of regular texture |
33 | |
34 | m_dwTextureFmt = TEXTURE_FMT_A8R8G8B8; // Always use 32bit to load texture |
35 | glGenTextures( 1, &m_dwTextureName ); |
36 | OPENGL_CHECK_ERRORS; |
37 | |
38 | // Make the width and height be the power of 2 |
39 | uint32 w; |
40 | for (w = 1; w < dwWidth; w <<= 1); |
41 | m_dwCreatedTextureWidth = w; |
42 | for (w = 1; w < dwHeight; w <<= 1); |
43 | m_dwCreatedTextureHeight = w; |
44 | |
45 | if (dwWidth*dwHeight > 256*256) |
46 | TRACE4("Large texture: (%d x %d), created as (%d x %d)", |
47 | dwWidth, dwHeight,m_dwCreatedTextureWidth,m_dwCreatedTextureHeight); |
48 | |
49 | m_fYScale = (float)m_dwCreatedTextureHeight/(float)m_dwHeight; |
50 | m_fXScale = (float)m_dwCreatedTextureWidth/(float)m_dwWidth; |
51 | |
52 | m_pTexture = malloc(m_dwCreatedTextureWidth * m_dwCreatedTextureHeight * GetPixelSize()); |
53 | |
54 | switch( options.textureQuality ) |
55 | { |
56 | case TXT_QUALITY_DEFAULT: |
57 | if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) |
58 | m_glFmt = GL_RGBA4; |
59 | break; |
60 | case TXT_QUALITY_32BIT: |
61 | break; |
62 | case TXT_QUALITY_16BIT: |
63 | m_glFmt = GL_RGBA4; |
64 | break; |
65 | }; |
66 | LOG_TEXTURE(TRACE2("New texture: (%d, %d)", dwWidth, dwHeight)); |
67 | } |
68 | |
69 | COGLTexture::~COGLTexture() |
70 | { |
71 | // FIXME: If usage is AS_RENDER_TARGET, we need to destroy the pbuffer |
72 | |
73 | glDeleteTextures(1, &m_dwTextureName ); |
74 | OPENGL_CHECK_ERRORS; |
75 | free(m_pTexture); |
76 | m_pTexture = NULL; |
77 | m_dwWidth = 0; |
78 | m_dwHeight = 0; |
79 | } |
80 | |
81 | bool COGLTexture::StartUpdate(DrawInfo *di) |
82 | { |
83 | if (m_pTexture == NULL) |
84 | return false; |
85 | |
86 | di->dwHeight = (uint16)m_dwHeight; |
87 | di->dwWidth = (uint16)m_dwWidth; |
88 | di->dwCreatedHeight = m_dwCreatedTextureHeight; |
89 | di->dwCreatedWidth = m_dwCreatedTextureWidth; |
90 | di->lpSurface = m_pTexture; |
91 | di->lPitch = GetPixelSize()*m_dwCreatedTextureWidth; |
92 | |
93 | return true; |
94 | } |
95 | |
96 | void COGLTexture::EndUpdate(DrawInfo *di) |
97 | { |
98 | COGLGraphicsContext *pcontext = (COGLGraphicsContext *)(CGraphicsContext::g_pGraphicsContext); // we need this to check if the GL extension is avaible |
99 | |
100 | glBindTexture(GL_TEXTURE_2D, m_dwTextureName); |
101 | OPENGL_CHECK_ERRORS; |
102 | |
103 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
104 | OPENGL_CHECK_ERRORS; |
105 | |
106 | // mipmap support |
107 | if(options.mipmapping) |
108 | { |
109 | int m_maximumAnistropy = pcontext->getMaxAnisotropicFiltering(); //if getMaxAnisotropicFiltering() return more than 0, so aniso is supported and maxAnisotropicFiltering is set |
110 | |
111 | // Set Anisotropic filtering (mipmapping have to be activated, aniso filtering is not effective without) |
112 | if( m_maximumAnistropy ) |
113 | { |
114 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, m_maximumAnistropy); |
115 | OPENGL_CHECK_ERRORS; |
116 | } |
117 | |
118 | // Set Mipmap |
119 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); |
120 | OPENGL_CHECK_ERRORS; |
121 | |
122 | #if SDL_VIDEO_OPENGL |
123 | // Tell to hardware to generate mipmap (himself) when glTexImage2D is called |
124 | glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); |
125 | #elif SDL_VIDEO_OPENGL_ES2 |
126 | glGenerateMipmap(GL_TEXTURE_2D); |
127 | #endif |
128 | OPENGL_CHECK_ERRORS; |
129 | } |
130 | else |
131 | { |
132 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
133 | OPENGL_CHECK_ERRORS; |
134 | } |
135 | |
136 | // Copy the image data from main memory to video card texture memory |
137 | #if SDL_VIDEO_OPENGL |
138 | glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, m_pTexture); |
139 | #elif SDL_VIDEO_OPENGL_ES2 |
140 | //GL_BGRA_IMG works on adreno but not inside profiler. |
141 | glTexImage2D(GL_TEXTURE_2D, 0, m_glFmt, m_dwCreatedTextureWidth, m_dwCreatedTextureHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_pTexture); |
142 | #endif |
143 | OPENGL_CHECK_ERRORS; |
144 | } |
145 | |
146 | |
147 | // Keep in mind that the real texture is not scaled to fix the created opengl texture yet. |
148 | // when the image is need to be scaled, ScaleImageToSurface in CTexure will be called to |
149 | // scale the image automatically |
150 | |