keunyoung | b85b275 | 2013-03-08 12:28:03 -0800 | [diff] [blame] | 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 | #ifndef _GL_CLIENT_STATE_H_ |
| 17 | #define _GL_CLIENT_STATE_H_ |
| 18 | |
| 19 | #define GL_API |
| 20 | #ifndef ANDROID |
| 21 | #define GL_APIENTRY |
| 22 | #define GL_APIENTRYP |
| 23 | #endif |
| 24 | |
| 25 | #include <GLES/gl.h> |
| 26 | #include <GLES/glext.h> |
| 27 | #include <GLES2/gl2.h> |
| 28 | #include <GLES2/gl2ext.h> |
| 29 | |
| 30 | #include <stdio.h> |
| 31 | #include <stdlib.h> |
| 32 | #include "ErrorLog.h" |
| 33 | #include "codec_defs.h" |
| 34 | |
| 35 | class GLClientState { |
| 36 | public: |
| 37 | typedef enum { |
| 38 | VERTEX_LOCATION = 0, |
| 39 | NORMAL_LOCATION = 1, |
| 40 | COLOR_LOCATION = 2, |
| 41 | POINTSIZE_LOCATION = 3, |
| 42 | TEXCOORD0_LOCATION = 4, |
| 43 | TEXCOORD1_LOCATION = 5, |
| 44 | TEXCOORD2_LOCATION = 6, |
| 45 | TEXCOORD3_LOCATION = 7, |
| 46 | TEXCOORD4_LOCATION = 8, |
| 47 | TEXCOORD5_LOCATION = 9, |
| 48 | TEXCOORD6_LOCATION = 10, |
| 49 | TEXCOORD7_LOCATION = 11, |
| 50 | MATRIXINDEX_LOCATION = 12, |
| 51 | WEIGHT_LOCATION = 13, |
| 52 | LAST_LOCATION = 14 |
| 53 | } StateLocation; |
| 54 | |
| 55 | typedef struct { |
| 56 | GLint enabled; |
| 57 | GLint size; |
| 58 | GLenum type; |
| 59 | GLsizei stride; |
| 60 | void *data; |
| 61 | GLuint bufferObject; |
| 62 | GLenum glConst; |
| 63 | unsigned int elementSize; |
| 64 | bool enableDirty; // true if any enable state has changed since last draw |
| 65 | bool normalized; |
| 66 | } VertexAttribState; |
| 67 | |
| 68 | typedef struct { |
| 69 | int unpack_alignment; |
| 70 | int pack_alignment; |
| 71 | } PixelStoreState; |
| 72 | |
| 73 | enum { |
| 74 | MAX_TEXTURE_UNITS = 32, |
| 75 | }; |
| 76 | |
| 77 | public: |
| 78 | GLClientState(int nLocations = CODEC_MAX_VERTEX_ATTRIBUTES); |
| 79 | ~GLClientState(); |
| 80 | int nLocations() { return m_nLocations; } |
| 81 | const PixelStoreState *pixelStoreState() { return &m_pixelStore; } |
| 82 | int setPixelStore(GLenum param, GLint value); |
| 83 | GLuint currentArrayVbo() { return m_currentArrayVbo; } |
| 84 | GLuint currentIndexVbo() { return m_currentIndexVbo; } |
| 85 | void enable(int location, int state); |
| 86 | void setState(int location, int size, GLenum type, GLboolean normalized, GLsizei stride, const void *data); |
| 87 | void setBufferObject(int location, GLuint id); |
| 88 | const VertexAttribState *getState(int location); |
| 89 | const VertexAttribState *getStateAndEnableDirty(int location, bool *enableChanged); |
| 90 | int getLocation(GLenum loc); |
| 91 | void setActiveTexture(int texUnit) {m_activeTexture = texUnit; }; |
| 92 | int getActiveTexture() const { return m_activeTexture; } |
| 93 | |
bohu | b0f0cdf | 2014-11-06 18:08:07 -0800 | [diff] [blame] | 94 | void unBindBuffer(GLuint id) |
| 95 | { |
| 96 | if (m_currentArrayVbo == id) m_currentArrayVbo = 0; |
| 97 | else if (m_currentIndexVbo == id) m_currentIndexVbo = 0; |
| 98 | } |
| 99 | |
keunyoung | b85b275 | 2013-03-08 12:28:03 -0800 | [diff] [blame] | 100 | int bindBuffer(GLenum target, GLuint id) |
| 101 | { |
| 102 | int err = 0; |
| 103 | switch(target) { |
| 104 | case GL_ARRAY_BUFFER: |
| 105 | m_currentArrayVbo = id; |
| 106 | break; |
| 107 | case GL_ELEMENT_ARRAY_BUFFER: |
| 108 | m_currentIndexVbo = id; |
| 109 | break; |
| 110 | default: |
| 111 | err = -1; |
| 112 | } |
| 113 | return err; |
| 114 | } |
| 115 | |
| 116 | int getBuffer(GLenum target) |
| 117 | { |
| 118 | int ret=0; |
| 119 | switch (target) { |
| 120 | case GL_ARRAY_BUFFER: |
| 121 | ret = m_currentArrayVbo; |
| 122 | break; |
| 123 | case GL_ELEMENT_ARRAY_BUFFER: |
| 124 | ret = m_currentIndexVbo; |
| 125 | break; |
| 126 | default: |
| 127 | ret = -1; |
| 128 | } |
| 129 | return ret; |
| 130 | } |
| 131 | size_t pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack) const; |
| 132 | |
| 133 | void setCurrentProgram(GLint program) { m_currentProgram = program; } |
| 134 | GLint currentProgram() const { return m_currentProgram; } |
| 135 | |
| 136 | /* OES_EGL_image_external |
| 137 | * |
| 138 | * These functions manipulate GL state which interacts with the |
| 139 | * OES_EGL_image_external extension, to support client-side emulation on |
| 140 | * top of host implementations that don't have it. |
| 141 | * |
| 142 | * Most of these calls should only be used with TEXTURE_2D or |
| 143 | * TEXTURE_EXTERNAL_OES texture targets; TEXTURE_CUBE_MAP or other extension |
| 144 | * targets should bypass this. An exception is bindTexture(), which should |
| 145 | * see all glBindTexture() calls for any target. |
| 146 | */ |
| 147 | |
| 148 | // glActiveTexture(GL_TEXTURE0 + i) |
| 149 | // Sets the active texture unit. Up to MAX_TEXTURE_UNITS are supported. |
| 150 | GLenum setActiveTextureUnit(GLenum texture); |
| 151 | GLenum getActiveTextureUnit() const; |
| 152 | |
| 153 | // glEnable(GL_TEXTURE_(2D|EXTERNAL_OES)) |
| 154 | void enableTextureTarget(GLenum target); |
| 155 | |
| 156 | // glDisable(GL_TEXTURE_(2D|EXTERNAL_OES)) |
| 157 | void disableTextureTarget(GLenum target); |
| 158 | |
| 159 | // Implements the target priority logic: |
| 160 | // * Return GL_TEXTURE_EXTERNAL_OES if enabled, else |
| 161 | // * Return GL_TEXTURE_2D if enabled, else |
| 162 | // * Return the allDisabled value. |
| 163 | // For some cases passing GL_TEXTURE_2D for allDisabled makes callee code |
| 164 | // simpler; for other cases passing a recognizable enum like GL_ZERO or |
| 165 | // GL_INVALID_ENUM is appropriate. |
| 166 | GLenum getPriorityEnabledTarget(GLenum allDisabled) const; |
| 167 | |
| 168 | // glBindTexture(GL_TEXTURE_*, ...) |
| 169 | // Set the target binding of the active texture unit to texture. Returns |
| 170 | // GL_NO_ERROR on success or GL_INVALID_OPERATION if the texture has |
| 171 | // previously been bound to a different target. If firstUse is not NULL, |
| 172 | // it is set to indicate whether this is the first use of the texture. |
| 173 | // For accurate error detection, bindTexture should be called for *all* |
| 174 | // targets, not just 2D and EXTERNAL_OES. |
| 175 | GLenum bindTexture(GLenum target, GLuint texture, GLboolean* firstUse); |
| 176 | |
| 177 | // Return the texture currently bound to GL_TEXTURE_(2D|EXTERNAL_OES). |
| 178 | GLuint getBoundTexture(GLenum target) const; |
| 179 | |
| 180 | // glDeleteTextures(...) |
| 181 | // Remove references to the to-be-deleted textures. |
| 182 | void deleteTextures(GLsizei n, const GLuint* textures); |
| 183 | |
| 184 | private: |
| 185 | PixelStoreState m_pixelStore; |
| 186 | VertexAttribState *m_states; |
| 187 | int m_nLocations; |
| 188 | GLuint m_currentArrayVbo; |
| 189 | GLuint m_currentIndexVbo; |
| 190 | int m_activeTexture; |
| 191 | GLint m_currentProgram; |
| 192 | |
| 193 | bool validLocation(int location) { return (location >= 0 && location < m_nLocations); } |
| 194 | |
| 195 | enum TextureTarget { |
| 196 | TEXTURE_2D = 0, |
| 197 | TEXTURE_EXTERNAL = 1, |
| 198 | TEXTURE_TARGET_COUNT |
| 199 | }; |
| 200 | struct TextureUnit { |
| 201 | unsigned int enables; |
| 202 | GLuint texture[TEXTURE_TARGET_COUNT]; |
| 203 | }; |
| 204 | struct TextureRec { |
| 205 | GLuint id; |
| 206 | GLenum target; |
| 207 | }; |
| 208 | struct TextureState { |
| 209 | TextureUnit unit[MAX_TEXTURE_UNITS]; |
| 210 | TextureUnit* activeUnit; |
| 211 | TextureRec* textures; |
| 212 | GLuint numTextures; |
| 213 | GLuint allocTextures; |
| 214 | }; |
| 215 | TextureState m_tex; |
| 216 | |
| 217 | static int compareTexId(const void* pid, const void* prec); |
| 218 | TextureRec* addTextureRec(GLuint id, GLenum target); |
| 219 | |
| 220 | public: |
| 221 | void getClientStatePointer(GLenum pname, GLvoid** params); |
| 222 | |
| 223 | template <class T> |
| 224 | int getVertexAttribParameter(GLuint index, GLenum param, T *ptr) |
| 225 | { |
| 226 | bool handled = true; |
| 227 | const VertexAttribState *vertexAttrib = getState(index); |
| 228 | if (vertexAttrib == NULL) { |
| 229 | ERR("getVeterxAttriParameter for non existant index %d\n", index); |
| 230 | // set gl error; |
| 231 | return handled; |
| 232 | } |
| 233 | |
| 234 | switch(param) { |
| 235 | case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: |
| 236 | *ptr = (T)(vertexAttrib->bufferObject); |
| 237 | break; |
| 238 | case GL_VERTEX_ATTRIB_ARRAY_ENABLED: |
| 239 | *ptr = (T)(vertexAttrib->enabled); |
| 240 | break; |
| 241 | case GL_VERTEX_ATTRIB_ARRAY_SIZE: |
| 242 | *ptr = (T)(vertexAttrib->size); |
| 243 | break; |
| 244 | case GL_VERTEX_ATTRIB_ARRAY_STRIDE: |
| 245 | *ptr = (T)(vertexAttrib->stride); |
| 246 | break; |
| 247 | case GL_VERTEX_ATTRIB_ARRAY_TYPE: |
| 248 | *ptr = (T)(vertexAttrib->type); |
| 249 | break; |
| 250 | case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED: |
| 251 | *ptr = (T)(vertexAttrib->normalized); |
| 252 | break; |
| 253 | case GL_CURRENT_VERTEX_ATTRIB: |
| 254 | handled = false; |
| 255 | break; |
| 256 | default: |
| 257 | handled = false; |
| 258 | ERR("unknown vertex-attrib parameter param %d\n", param); |
| 259 | } |
| 260 | return handled; |
| 261 | } |
| 262 | |
| 263 | template <class T> |
| 264 | bool getClientStateParameter(GLenum param, T* ptr) |
| 265 | { |
| 266 | bool isClientStateParam = false; |
| 267 | switch (param) { |
| 268 | case GL_CLIENT_ACTIVE_TEXTURE: { |
| 269 | GLint tex = getActiveTexture() + GL_TEXTURE0; |
| 270 | *ptr = tex; |
| 271 | isClientStateParam = true; |
| 272 | break; |
| 273 | } |
| 274 | case GL_VERTEX_ARRAY_SIZE: { |
| 275 | const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION); |
| 276 | *ptr = state->size; |
| 277 | isClientStateParam = true; |
| 278 | break; |
| 279 | } |
| 280 | case GL_VERTEX_ARRAY_TYPE: { |
| 281 | const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION); |
| 282 | *ptr = state->type; |
| 283 | isClientStateParam = true; |
| 284 | break; |
| 285 | } |
| 286 | case GL_VERTEX_ARRAY_STRIDE: { |
| 287 | const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION); |
| 288 | *ptr = state->stride; |
| 289 | isClientStateParam = true; |
| 290 | break; |
| 291 | } |
| 292 | case GL_COLOR_ARRAY_SIZE: { |
| 293 | const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION); |
| 294 | *ptr = state->size; |
| 295 | isClientStateParam = true; |
| 296 | break; |
| 297 | } |
| 298 | case GL_COLOR_ARRAY_TYPE: { |
| 299 | const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION); |
| 300 | *ptr = state->type; |
| 301 | isClientStateParam = true; |
| 302 | break; |
| 303 | } |
| 304 | case GL_COLOR_ARRAY_STRIDE: { |
| 305 | const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION); |
| 306 | *ptr = state->stride; |
| 307 | isClientStateParam = true; |
| 308 | break; |
| 309 | } |
| 310 | case GL_NORMAL_ARRAY_TYPE: { |
| 311 | const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION); |
| 312 | *ptr = state->type; |
| 313 | isClientStateParam = true; |
| 314 | break; |
| 315 | } |
| 316 | case GL_NORMAL_ARRAY_STRIDE: { |
| 317 | const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION); |
| 318 | *ptr = state->stride; |
| 319 | isClientStateParam = true; |
| 320 | break; |
| 321 | } |
| 322 | case GL_TEXTURE_COORD_ARRAY_SIZE: { |
| 323 | const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION); |
| 324 | *ptr = state->size; |
| 325 | isClientStateParam = true; |
| 326 | break; |
| 327 | } |
| 328 | case GL_TEXTURE_COORD_ARRAY_TYPE: { |
| 329 | const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION); |
| 330 | *ptr = state->type; |
| 331 | isClientStateParam = true; |
| 332 | break; |
| 333 | } |
| 334 | case GL_TEXTURE_COORD_ARRAY_STRIDE: { |
| 335 | const GLClientState::VertexAttribState *state = getState(getActiveTexture() + GLClientState::TEXCOORD0_LOCATION); |
| 336 | *ptr = state->stride; |
| 337 | isClientStateParam = true; |
| 338 | break; |
| 339 | } |
| 340 | case GL_POINT_SIZE_ARRAY_TYPE_OES: { |
| 341 | const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION); |
| 342 | *ptr = state->type; |
| 343 | isClientStateParam = true; |
| 344 | break; |
| 345 | } |
| 346 | case GL_POINT_SIZE_ARRAY_STRIDE_OES: { |
| 347 | const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION); |
| 348 | *ptr = state->stride; |
| 349 | isClientStateParam = true; |
| 350 | break; |
| 351 | } |
| 352 | case GL_MATRIX_INDEX_ARRAY_SIZE_OES: { |
| 353 | const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION); |
| 354 | *ptr = state->size; |
| 355 | isClientStateParam = true; |
| 356 | break; |
| 357 | } |
| 358 | case GL_MATRIX_INDEX_ARRAY_TYPE_OES: { |
| 359 | const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION); |
| 360 | *ptr = state->type; |
| 361 | isClientStateParam = true; |
| 362 | break; |
| 363 | } |
| 364 | case GL_MATRIX_INDEX_ARRAY_STRIDE_OES: { |
| 365 | const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION); |
| 366 | *ptr = state->stride; |
| 367 | isClientStateParam = true; |
| 368 | break; |
| 369 | } |
| 370 | case GL_WEIGHT_ARRAY_SIZE_OES: { |
| 371 | const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION); |
| 372 | *ptr = state->size; |
| 373 | isClientStateParam = true; |
| 374 | break; |
| 375 | } |
| 376 | case GL_WEIGHT_ARRAY_TYPE_OES: { |
| 377 | const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION); |
| 378 | *ptr = state->type; |
| 379 | isClientStateParam = true; |
| 380 | break; |
| 381 | } |
| 382 | case GL_WEIGHT_ARRAY_STRIDE_OES: { |
| 383 | const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION); |
| 384 | *ptr = state->stride; |
| 385 | isClientStateParam = true; |
| 386 | break; |
| 387 | } |
| 388 | case GL_VERTEX_ARRAY_BUFFER_BINDING: { |
| 389 | const GLClientState::VertexAttribState *state = getState(GLClientState::VERTEX_LOCATION); |
| 390 | *ptr = state->bufferObject; |
| 391 | isClientStateParam = true; |
| 392 | break; |
| 393 | } |
| 394 | case GL_NORMAL_ARRAY_BUFFER_BINDING: { |
| 395 | const GLClientState::VertexAttribState *state = getState(GLClientState::NORMAL_LOCATION); |
| 396 | *ptr = state->bufferObject; |
| 397 | isClientStateParam = true; |
| 398 | break; |
| 399 | } |
| 400 | case GL_COLOR_ARRAY_BUFFER_BINDING: { |
| 401 | const GLClientState::VertexAttribState *state = getState(GLClientState::COLOR_LOCATION); |
| 402 | *ptr = state->bufferObject; |
| 403 | isClientStateParam = true; |
| 404 | break; |
| 405 | } |
| 406 | case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING: { |
| 407 | const GLClientState::VertexAttribState *state = getState(getActiveTexture()+GLClientState::TEXCOORD0_LOCATION); |
| 408 | *ptr = state->bufferObject; |
| 409 | isClientStateParam = true; |
| 410 | break; |
| 411 | } |
| 412 | case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES: { |
| 413 | const GLClientState::VertexAttribState *state = getState(GLClientState::POINTSIZE_LOCATION); |
| 414 | *ptr = state->bufferObject; |
| 415 | isClientStateParam = true; |
| 416 | break; |
| 417 | } |
| 418 | case GL_MATRIX_INDEX_ARRAY_BUFFER_BINDING_OES: { |
| 419 | const GLClientState::VertexAttribState *state = getState(GLClientState::MATRIXINDEX_LOCATION); |
| 420 | *ptr = state->bufferObject; |
| 421 | isClientStateParam = true; |
| 422 | break; |
| 423 | } |
| 424 | case GL_WEIGHT_ARRAY_BUFFER_BINDING_OES: { |
| 425 | const GLClientState::VertexAttribState *state = getState(GLClientState::WEIGHT_LOCATION); |
| 426 | *ptr = state->bufferObject; |
| 427 | isClientStateParam = true; |
| 428 | break; |
| 429 | } |
| 430 | case GL_ARRAY_BUFFER_BINDING: { |
| 431 | int buffer = getBuffer(GL_ARRAY_BUFFER); |
| 432 | *ptr = buffer; |
| 433 | isClientStateParam = true; |
| 434 | break; |
| 435 | } |
| 436 | case GL_ELEMENT_ARRAY_BUFFER_BINDING: { |
| 437 | int buffer = getBuffer(GL_ELEMENT_ARRAY_BUFFER); |
| 438 | *ptr = buffer; |
| 439 | isClientStateParam = true; |
| 440 | break; |
| 441 | } |
| 442 | } |
| 443 | return isClientStateParam; |
| 444 | } |
| 445 | |
| 446 | }; |
| 447 | #endif |