1 /* 2 * Copyright (C) 2007 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 17 #ifndef ANDROID_PIXELFLINGER_H 18 #define ANDROID_PIXELFLINGER_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <pixelflinger/format.h> 24 25 // GGL types 26 27 typedef int8_t GGLbyte; // b 28 typedef int16_t GGLshort; // s 29 typedef int32_t GGLint; // i 30 typedef ssize_t GGLsizei; // i 31 typedef int32_t GGLfixed; // x 32 typedef int32_t GGLclampx; // x 33 typedef float GGLfloat; // f 34 typedef float GGLclampf; // f 35 typedef double GGLdouble; // d 36 typedef double GGLclampd; // d 37 typedef uint8_t GGLubyte; // ub 38 typedef uint8_t GGLboolean; // ub 39 typedef uint16_t GGLushort; // us 40 typedef uint32_t GGLuint; // ui 41 typedef unsigned int GGLenum; // ui 42 typedef unsigned int GGLbitfield; // ui 43 typedef void GGLvoid; 44 typedef int32_t GGLfixed32; 45 typedef int32_t GGLcolor; 46 typedef int32_t GGLcoord; 47 48 // ---------------------------------------------------------------------------- 49 50 #define GGL_MAX_VIEWPORT_DIMS 4096 51 #define GGL_MAX_TEXTURE_SIZE 4096 52 #define GGL_MAX_ALIASED_POINT_SIZE 0x7FFFFFF 53 #define GGL_MAX_SMOOTH_POINT_SIZE 2048 54 #define GGL_MAX_SMOOTH_LINE_WIDTH 2048 55 56 // ---------------------------------------------------------------------------- 57 58 // All these names are compatible with their OpenGL equivalents 59 // some of them are listed only for completeness 60 enum GGLNames { 61 GGL_FALSE = 0, 62 GGL_TRUE = 1, 63 64 // enable/disable 65 GGL_SCISSOR_TEST = 0x0C11, 66 GGL_TEXTURE_2D = 0x0DE1, 67 GGL_ALPHA_TEST = 0x0BC0, 68 GGL_BLEND = 0x0BE2, 69 GGL_COLOR_LOGIC_OP = 0x0BF2, 70 GGL_DITHER = 0x0BD0, 71 GGL_STENCIL_TEST = 0x0B90, 72 GGL_DEPTH_TEST = 0x0B71, 73 GGL_AA = 0x80000001, 74 GGL_W_LERP = 0x80000004, 75 GGL_POINT_SMOOTH_NICE = 0x80000005, 76 77 // buffers, pixel drawing/reading 78 GGL_COLOR = 0x1800, 79 80 // fog 81 GGL_FOG = 0x0B60, 82 83 // shade model 84 GGL_FLAT = 0x1D00, 85 GGL_SMOOTH = 0x1D01, 86 87 // Texture parameter name 88 GGL_TEXTURE_MIN_FILTER = 0x2801, 89 GGL_TEXTURE_MAG_FILTER = 0x2800, 90 GGL_TEXTURE_WRAP_S = 0x2802, 91 GGL_TEXTURE_WRAP_T = 0x2803, 92 GGL_TEXTURE_WRAP_R = 0x2804, 93 94 // Texture Filter 95 GGL_NEAREST = 0x2600, 96 GGL_LINEAR = 0x2601, 97 GGL_NEAREST_MIPMAP_NEAREST = 0x2700, 98 GGL_LINEAR_MIPMAP_NEAREST = 0x2701, 99 GGL_NEAREST_MIPMAP_LINEAR = 0x2702, 100 GGL_LINEAR_MIPMAP_LINEAR = 0x2703, 101 102 // Texture Wrap Mode 103 GGL_CLAMP = 0x2900, 104 GGL_REPEAT = 0x2901, 105 GGL_CLAMP_TO_EDGE = 0x812F, 106 107 // Texture Env Mode 108 GGL_REPLACE = 0x1E01, 109 GGL_MODULATE = 0x2100, 110 GGL_DECAL = 0x2101, 111 GGL_ADD = 0x0104, 112 113 // Texture Env Parameter 114 GGL_TEXTURE_ENV_MODE = 0x2200, 115 GGL_TEXTURE_ENV_COLOR = 0x2201, 116 117 // Texture Env Target 118 GGL_TEXTURE_ENV = 0x2300, 119 120 // Texture coord generation 121 GGL_TEXTURE_GEN_MODE = 0x2500, 122 GGL_S = 0x2000, 123 GGL_T = 0x2001, 124 GGL_R = 0x2002, 125 GGL_Q = 0x2003, 126 GGL_ONE_TO_ONE = 0x80000002, 127 GGL_AUTOMATIC = 0x80000003, 128 129 // AlphaFunction 130 GGL_NEVER = 0x0200, 131 GGL_LESS = 0x0201, 132 GGL_EQUAL = 0x0202, 133 GGL_LEQUAL = 0x0203, 134 GGL_GREATER = 0x0204, 135 GGL_NOTEQUAL = 0x0205, 136 GGL_GEQUAL = 0x0206, 137 GGL_ALWAYS = 0x0207, 138 139 // LogicOp 140 GGL_CLEAR = 0x1500, // 0 141 GGL_AND = 0x1501, // s & d 142 GGL_AND_REVERSE = 0x1502, // s & ~d 143 GGL_COPY = 0x1503, // s 144 GGL_AND_INVERTED = 0x1504, // ~s & d 145 GGL_NOOP = 0x1505, // d 146 GGL_XOR = 0x1506, // s ^ d 147 GGL_OR = 0x1507, // s | d 148 GGL_NOR = 0x1508, // ~(s | d) 149 GGL_EQUIV = 0x1509, // ~(s ^ d) 150 GGL_INVERT = 0x150A, // ~d 151 GGL_OR_REVERSE = 0x150B, // s | ~d 152 GGL_COPY_INVERTED = 0x150C, // ~s 153 GGL_OR_INVERTED = 0x150D, // ~s | d 154 GGL_NAND = 0x150E, // ~(s & d) 155 GGL_SET = 0x150F, // 1 156 157 // blending equation & function 158 GGL_ZERO = 0, // SD 159 GGL_ONE = 1, // SD 160 GGL_SRC_COLOR = 0x0300, // D 161 GGL_ONE_MINUS_SRC_COLOR = 0x0301, // D 162 GGL_SRC_ALPHA = 0x0302, // SD 163 GGL_ONE_MINUS_SRC_ALPHA = 0x0303, // SD 164 GGL_DST_ALPHA = 0x0304, // SD 165 GGL_ONE_MINUS_DST_ALPHA = 0x0305, // SD 166 GGL_DST_COLOR = 0x0306, // S 167 GGL_ONE_MINUS_DST_COLOR = 0x0307, // S 168 GGL_SRC_ALPHA_SATURATE = 0x0308, // S 169 170 // clear bits 171 GGL_DEPTH_BUFFER_BIT = 0x00000100, 172 GGL_STENCIL_BUFFER_BIT = 0x00000400, 173 GGL_COLOR_BUFFER_BIT = 0x00004000, 174 175 // errors 176 GGL_NO_ERROR = 0, 177 GGL_INVALID_ENUM = 0x0500, 178 GGL_INVALID_VALUE = 0x0501, 179 GGL_INVALID_OPERATION = 0x0502, 180 GGL_STACK_OVERFLOW = 0x0503, 181 GGL_STACK_UNDERFLOW = 0x0504, 182 GGL_OUT_OF_MEMORY = 0x0505 183 }; 184 185 // ---------------------------------------------------------------------------- 186 187 typedef struct { 188 GGLsizei version; // always set to sizeof(GGLSurface) 189 GGLuint width; // width in pixels 190 GGLuint height; // height in pixels 191 GGLint stride; // stride in pixels 192 GGLubyte* data; // pointer to the bits 193 GGLubyte format; // pixel format 194 GGLubyte rfu[3]; // must be zero 195 // these values are dependent on the used format 196 union { 197 GGLint compressedFormat; 198 GGLint vstride; 199 }; 200 void* reserved; 201 } GGLSurface; 202 203 204 typedef struct { 205 // immediate rendering 206 void (*pointx)(void *con, const GGLcoord* v, GGLcoord r); 207 void (*linex)(void *con, 208 const GGLcoord* v0, const GGLcoord* v1, GGLcoord width); 209 void (*recti)(void* c, GGLint l, GGLint t, GGLint r, GGLint b); 210 void (*trianglex)(void* c, 211 GGLcoord const* v0, GGLcoord const* v1, GGLcoord const* v2); 212 213 // scissor 214 void (*scissor)(void* c, GGLint x, GGLint y, GGLsizei width, GGLsizei height); 215 216 // Set the textures and color buffers 217 void (*activeTexture)(void* c, GGLuint tmu); 218 void (*bindTexture)(void* c, const GGLSurface* surface); 219 void (*colorBuffer)(void* c, const GGLSurface* surface); 220 void (*readBuffer)(void* c, const GGLSurface* surface); 221 void (*depthBuffer)(void* c, const GGLSurface* surface); 222 void (*bindTextureLod)(void* c, GGLuint tmu, const GGLSurface* surface); 223 224 // enable/disable features 225 void (*enable)(void* c, GGLenum name); 226 void (*disable)(void* c, GGLenum name); 227 void (*enableDisable)(void* c, GGLenum name, GGLboolean en); 228 229 // specify the fragment's color 230 void (*shadeModel)(void* c, GGLenum mode); 231 void (*color4xv)(void* c, const GGLclampx* color); 232 // specify color iterators (16.16) 233 void (*colorGrad12xv)(void* c, const GGLcolor* grad); 234 235 // specify Z coordinate iterators (0.32) 236 void (*zGrad3xv)(void* c, const GGLfixed32* grad); 237 238 // specify W coordinate iterators (16.16) 239 void (*wGrad3xv)(void* c, const GGLfixed* grad); 240 241 // specify fog iterator & color (16.16) 242 void (*fogGrad3xv)(void* c, const GGLfixed* grad); 243 void (*fogColor3xv)(void* c, const GGLclampx* color); 244 245 // specify blending parameters 246 void (*blendFunc)(void* c, GGLenum src, GGLenum dst); 247 void (*blendFuncSeparate)(void* c, GGLenum src, GGLenum dst, 248 GGLenum srcAlpha, GGLenum dstAplha); 249 250 // texture environnement (REPLACE / MODULATE / DECAL / BLEND) 251 void (*texEnvi)(void* c, GGLenum target, 252 GGLenum pname, 253 GGLint param); 254 255 void (*texEnvxv)(void* c, GGLenum target, 256 GGLenum pname, const GGLfixed* params); 257 258 // texture parameters (Wrapping, filter) 259 void (*texParameteri)(void* c, GGLenum target, 260 GGLenum pname, 261 GGLint param); 262 263 // texture iterators (16.16) 264 void (*texCoord2i)(void* c, GGLint s, GGLint t); 265 void (*texCoord2x)(void* c, GGLfixed s, GGLfixed t); 266 267 // s, dsdx, dsdy, scale, t, dtdx, dtdy, tscale 268 // This api uses block floating-point for S and T texture coordinates. 269 // All values are given in 16.16, scaled by 'scale'. In other words, 270 // set scale to 0, for 16.16 values. 271 void (*texCoordGradScale8xv)(void* c, GGLint tmu, const int32_t* grad8); 272 273 void (*texGeni)(void* c, GGLenum coord, GGLenum pname, GGLint param); 274 275 // masking 276 void (*colorMask)(void* c, GGLboolean red, 277 GGLboolean green, 278 GGLboolean blue, 279 GGLboolean alpha); 280 281 void (*depthMask)(void* c, GGLboolean flag); 282 283 void (*stencilMask)(void* c, GGLuint mask); 284 285 // alpha func 286 void (*alphaFuncx)(void* c, GGLenum func, GGLclampx ref); 287 288 // depth func 289 void (*depthFunc)(void* c, GGLenum func); 290 291 // logic op 292 void (*logicOp)(void* c, GGLenum opcode); 293 294 // clear 295 void (*clear)(void* c, GGLbitfield mask); 296 void (*clearColorx)(void* c, 297 GGLclampx r, GGLclampx g, GGLclampx b, GGLclampx a); 298 void (*clearDepthx)(void* c, GGLclampx depth); 299 void (*clearStencil)(void* c, GGLint s); 300 301 // framebuffer operations 302 void (*copyPixels)(void* c, GGLint x, GGLint y, 303 GGLsizei width, GGLsizei height, GGLenum type); 304 void (*rasterPos2x)(void* c, GGLfixed x, GGLfixed y); 305 void (*rasterPos2i)(void* c, GGLint x, GGLint y); 306 } GGLContext; 307 308 // ---------------------------------------------------------------------------- 309 310 #ifdef __cplusplus 311 extern "C" { 312 #endif 313 314 // construct / destroy the context 315 ssize_t gglInit(GGLContext** context); 316 ssize_t gglUninit(GGLContext* context); 317 318 GGLint gglBitBlti( 319 GGLContext* c, 320 int tmu, 321 GGLint crop[4], 322 GGLint where[4]); 323 324 #ifdef __cplusplus 325 }; 326 #endif 327 328 // ---------------------------------------------------------------------------- 329 330 #endif // ANDROID_PIXELFLINGER_H 331