| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved.
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #ifndef CR_STATE_TEXTURE_H
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| 8 | #define CR_STATE_TEXTURE_H
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| 9 |
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| 10 | #include "cr_hash.h"
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| 11 | #include "state/cr_statetypes.h"
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| 12 | #include "state/cr_limits.h"
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| 13 |
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| 14 | #include <iprt/cdefs.h>
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| 15 |
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| 16 | #ifdef __cplusplus
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| 17 | extern "C" {
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| 18 | #endif
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| 19 |
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| 20 | /* Tells state tracker to rely on diff_api to store/load texture images
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| 21 | * and avoid host memory allocation.
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| 22 | */
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| 23 | #define CR_STATE_NO_TEXTURE_IMAGE_STORE
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| 24 |
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| 25 | typedef struct {
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| 26 | GLubyte redbits;
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| 27 | GLubyte greenbits;
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| 28 | GLubyte bluebits;
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| 29 | GLubyte alphabits;
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| 30 | GLubyte luminancebits;
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| 31 | GLubyte intensitybits;
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| 32 | GLubyte indexbits;
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| 33 | } CRTextureFormat;
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| 34 |
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| 35 | typedef struct {
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| 36 | GLubyte *img;
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| 37 | int bytes;
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| 38 | GLint width; /* width, height, depth includes the border */
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| 39 | GLint height;
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| 40 | GLint depth;
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| 41 | GLint internalFormat;
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| 42 | GLint border;
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| 43 | GLenum format;
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| 44 | GLenum type;
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| 45 | int bytesPerPixel;
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| 46 | #if CR_ARB_texture_compression
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| 47 | GLboolean compressed;
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| 48 | #endif
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| 49 | GLboolean generateMipmap;
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| 50 | const CRTextureFormat *texFormat;
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| 51 |
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| 52 | CRbitvalue dirty[CR_MAX_BITARRAY];
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| 53 | } CRTextureLevel;
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| 54 |
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| 55 | typedef struct {
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| 56 | GLenum target;
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| 57 | GLuint name;
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| 58 |
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| 59 | /* The mipmap levels */
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| 60 | CRTextureLevel *level[6]; /* 6 cube faces */
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| 61 |
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| 62 | GLcolorf borderColor;
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| 63 | GLenum minFilter, magFilter;
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| 64 | GLenum wrapS, wrapT;
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| 65 | #ifdef CR_OPENGL_VERSION_1_2
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| 66 | GLenum wrapR;
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| 67 | GLfloat priority;
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| 68 | GLfloat minLod;
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| 69 | GLfloat maxLod;
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| 70 | GLint baseLevel;
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| 71 | GLint maxLevel;
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| 72 | #endif
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| 73 | #ifdef CR_EXT_texture_filter_anisotropic
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| 74 | GLfloat maxAnisotropy;
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| 75 | #endif
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| 76 | #ifdef CR_ARB_depth_texture
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| 77 | GLenum depthMode;
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| 78 | #endif
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| 79 | #ifdef CR_ARB_shadow
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| 80 | GLenum compareMode;
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| 81 | GLenum compareFunc;
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| 82 | #endif
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| 83 | #ifdef CR_ARB_shadow_ambient
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| 84 | GLfloat compareFailValue;
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| 85 | #endif
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| 86 | #ifdef CR_SGIS_generate_mipmap
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| 87 | GLboolean generateMipmap;
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| 88 | #endif
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| 89 | CRbitvalue dirty[CR_MAX_BITARRAY];
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| 90 | CRbitvalue imageBit[CR_MAX_BITARRAY];
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| 91 | CRbitvalue paramsBit[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 92 | } CRTextureObj;
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| 93 |
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| 94 | typedef struct {
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| 95 | CRbitvalue dirty[CR_MAX_BITARRAY];
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| 96 | CRbitvalue enable[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 97 | CRbitvalue current[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 98 | CRbitvalue objGen[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 99 | CRbitvalue eyeGen[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 100 | CRbitvalue genMode[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 101 | /* XXX someday create more bits for texture env state */
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| 102 | CRbitvalue envBit[CR_MAX_TEXTURE_UNITS][CR_MAX_BITARRAY];
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| 103 | } CRTextureBits;
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| 104 |
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| 105 | typedef struct {
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| 106 | /* Current texture objects (in terms of glBindTexture and glActiveTexture) */
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| 107 | CRTextureObj *currentTexture1D;
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| 108 | CRTextureObj *currentTexture2D;
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| 109 | CRTextureObj *currentTexture3D;
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| 110 | #ifdef CR_ARB_texture_cube_map
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| 111 | CRTextureObj *currentTextureCubeMap;
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| 112 | #endif
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| 113 | #ifdef CR_NV_texture_rectangle
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| 114 | CRTextureObj *currentTextureRect;
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| 115 | #endif
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| 116 |
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| 117 | GLboolean enabled1D;
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| 118 | GLboolean enabled2D;
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| 119 | GLboolean enabled3D;
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| 120 | #ifdef CR_ARB_texture_cube_map
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| 121 | GLboolean enabledCubeMap;
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| 122 | #endif
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| 123 | #ifdef CR_NV_texture_rectangle
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| 124 | GLboolean enabledRect;
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| 125 | #endif
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| 126 | #ifdef CR_EXT_texture_lod_bias
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| 127 | GLfloat lodBias;
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| 128 | #endif
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| 129 |
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| 130 | GLenum envMode;
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| 131 | GLcolorf envColor;
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| 132 |
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| 133 | /* GL_ARB_texture_env_combine */
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| 134 | GLenum combineModeRGB; /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
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| 135 | GLenum combineModeA; /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
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| 136 | GLenum combineSourceRGB[3]; /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
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| 137 | GLenum combineSourceA[3]; /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
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| 138 | GLenum combineOperandRGB[3]; /* SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
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| 139 | GLenum combineOperandA[3]; /* SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
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| 140 | GLfloat combineScaleRGB; /* 1 or 2 or 4 */
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| 141 | GLfloat combineScaleA; /* 1 or 2 or 4 */
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| 142 |
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| 143 | GLtexcoordb textureGen;
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| 144 | GLvectorf objSCoeff;
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| 145 | GLvectorf objTCoeff;
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| 146 | GLvectorf objRCoeff;
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| 147 | GLvectorf objQCoeff;
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| 148 | GLvectorf eyeSCoeff;
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| 149 | GLvectorf eyeTCoeff;
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| 150 | GLvectorf eyeRCoeff;
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| 151 | GLvectorf eyeQCoeff;
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| 152 | GLtexcoorde gen;
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| 153 |
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| 154 | /* These are only used for glPush/PopAttrib */
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| 155 | CRTextureObj Saved1D;
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| 156 | CRTextureObj Saved2D;
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| 157 | CRTextureObj Saved3D;
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| 158 | #ifdef CR_ARB_texture_cube_map
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| 159 | CRTextureObj SavedCubeMap;
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| 160 | #endif
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| 161 | #ifdef CR_NV_texture_rectangle
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| 162 | CRTextureObj SavedRect;
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| 163 | #endif
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| 164 | } CRTextureUnit;
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| 165 |
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| 166 | typedef struct {
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| 167 | /* Default texture objects (name = 0) */
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| 168 | CRTextureObj base1D;
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| 169 | CRTextureObj base2D;
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| 170 | CRTextureObj base3D;
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| 171 | #ifdef CR_ARB_texture_cube_map
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| 172 | CRTextureObj baseCubeMap;
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| 173 | #endif
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| 174 | #ifdef CR_NV_texture_rectangle
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| 175 | CRTextureObj baseRect;
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| 176 | #endif
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| 177 |
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| 178 | /* Proxy texture objects */
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| 179 | CRTextureObj proxy1D;
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| 180 | CRTextureObj proxy2D;
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| 181 | CRTextureObj proxy3D;
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| 182 | #ifdef CR_ARB_texture_cube_map
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| 183 | CRTextureObj proxyCubeMap;
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| 184 | #endif
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| 185 | #ifdef CR_NV_texture_rectangle
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| 186 | CRTextureObj proxyRect;
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| 187 | #endif
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| 188 |
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| 189 | GLuint curTextureUnit; /* GL_ACTIVE_TEXTURE */
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| 190 |
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| 191 | GLint maxLevel; /* number of mipmap levels possible: [0..max] */
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| 192 | GLint max3DLevel;
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| 193 | GLint maxCubeMapLevel;
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| 194 | GLint maxRectLevel;
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| 195 |
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| 196 | GLboolean broadcastTextures; /*@todo what is it for?*/
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| 197 |
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| 198 | /* Indicates that we have to resend texture data to GPU on first glMakeCurrent call with owning context */
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| 199 | GLboolean bResyncNeeded;
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| 200 |
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| 201 | /* Per-texture unit state: */
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| 202 | CRTextureUnit unit[CR_MAX_TEXTURE_UNITS];
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| 203 | } CRTextureState;
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| 204 |
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| 205 | DECLEXPORT(void) crStateTextureInit(CRContext *ctx);
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| 206 | DECLEXPORT(void) crStateTextureDestroy(CRContext *ctx);
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| 207 | DECLEXPORT(void) crStateTextureFree(CRContext *ctx);
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| 208 |
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| 209 | DECLEXPORT(void) crStateTextureInitTexture(GLuint name);
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| 210 | DECLEXPORT(CRTextureObj *) crStateTextureAllocate(GLuint name);
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| 211 | /*void crStateTextureDelete(GLuint name);*/
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| 212 | DECLEXPORT(CRTextureObj *) crStateTextureGet(GLenum target, GLuint textureid);
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| 213 | DECLEXPORT(int) crStateTextureGetSize(GLenum target, GLenum level);
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| 214 | DECLEXPORT(const GLvoid *) crStateTextureGetData(GLenum target, GLenum level);
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| 215 |
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| 216 | DECLEXPORT(int) crStateTextureCheckDirtyImages(CRContext *from, CRContext *to, GLenum target, int textureUnit);
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| 217 |
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| 218 | DECLEXPORT(void) crStateTextureDiff(CRTextureBits *t, CRbitvalue *bitID,
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| 219 | CRContext *fromCtx, CRContext *toCtx);
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| 220 | DECLEXPORT(void) crStateTextureSwitch(CRTextureBits *t, CRbitvalue *bitID,
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| 221 | CRContext *fromCtx, CRContext *toCtx);
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| 222 |
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| 223 | DECLEXPORT(void) crStateTextureObjectDiff(CRContext *fromCtx,
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| 224 | const CRbitvalue *bitID,
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| 225 | const CRbitvalue *nbitID,
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| 226 | CRTextureObj *tobj, GLboolean alwaysDirty);
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| 227 |
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| 228 | DECLEXPORT(void) crStateDiffAllTextureObjects( CRContext *g, CRbitvalue *bitID, GLboolean bForceUpdate );
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| 229 |
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| 230 | DECLEXPORT(void) crStateDeleteTextureObjectData(CRTextureObj *tobj);
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| 231 | DECLEXPORT(void) crStateDeleteTextureObject(CRTextureObj *tobj);
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| 232 |
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| 233 |
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| 234 | #ifdef __cplusplus
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| 235 | }
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| 236 | #endif
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| 237 |
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| 238 | #endif /* CR_STATE_TEXTURE_H */
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