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      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 #include "GLEncoder.h"
     17 #include "glUtils.h"
     18 #include "FixedBuffer.h"
     19 #include <cutils/log.h>
     20 #include <assert.h>
     21 
     22 static GLubyte *gVendorString= (GLubyte *) "Android";
     23 static GLubyte *gRendererString= (GLubyte *) "Android HW-GLES 1.0";
     24 static GLubyte *gVersionString= (GLubyte *) "OpenGL ES-CM 1.0";
     25 static GLubyte *gExtensionsString= (GLubyte *) ""; // no extensions at this point;
     26 
     27 #define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
     28     HostConnection *hostCon = HostConnection::get(); \
     29     if (!hostCon) { \
     30         LOGE("egl: Failed to get host connection\n"); \
     31         return ret; \
     32     } \
     33     renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
     34     if (!rcEnc) { \
     35         LOGE("egl: Failed to get renderControl encoder context\n"); \
     36         return ret; \
     37     }
     38 
     39 #define SET_ERROR_IF(condition,err) if((condition)) {                            \
     40         LOGE("%s:%s:%d GL error 0x%x\n", __FILE__, __FUNCTION__, __LINE__, err); \
     41         ctx->setError(err);                                    \
     42         return;                                                  \
     43     }
     44 
     45 
     46 #define RET_AND_SET_ERROR_IF(condition,err,ret) if((condition)) {                \
     47         LOGE("%s:%s:%d GL error 0x%x\n", __FILE__, __FUNCTION__, __LINE__, err); \
     48         ctx->setError(err);                                    \
     49         return ret;                                              \
     50     }
     51 
     52 GLenum GLEncoder::s_glGetError(void * self)
     53 {
     54     GLEncoder *ctx = (GLEncoder *)self;
     55     GLenum err = ctx->getError();
     56     if(err != GL_NO_ERROR) {
     57         ctx->setError(GL_NO_ERROR);
     58         return err;
     59     }
     60 
     61     return ctx->m_glGetError_enc(self);
     62 
     63 }
     64 
     65 GLint * GLEncoder::getCompressedTextureFormats()
     66 {
     67     if (m_compressedTextureFormats == NULL) {
     68         this->glGetIntegerv(this, GL_NUM_COMPRESSED_TEXTURE_FORMATS,
     69                             &m_num_compressedTextureFormats);
     70         if (m_num_compressedTextureFormats > 0) {
     71             // get number of texture formats;
     72             m_compressedTextureFormats = new GLint[m_num_compressedTextureFormats];
     73             this->glGetCompressedTextureFormats(this, m_num_compressedTextureFormats, m_compressedTextureFormats);
     74         }
     75     }
     76     return m_compressedTextureFormats;
     77 }
     78 
     79 void GLEncoder::s_glGetIntegerv(void *self, GLenum param, GLint *ptr)
     80 {
     81     GLEncoder *ctx = (GLEncoder *)self;
     82     assert(ctx->m_state != NULL);
     83     if (param == GL_COMPRESSED_TEXTURE_FORMATS) {
     84         GLint * compressedTextureFormats = ctx->getCompressedTextureFormats();
     85         if (ctx->m_num_compressedTextureFormats > 0 && compressedTextureFormats != NULL) {
     86             memcpy(ptr, compressedTextureFormats, ctx->m_num_compressedTextureFormats * sizeof(GLint));
     87         }
     88     }
     89     else if (!ctx->m_state->getClientStateParameter<GLint>(param,ptr)) {
     90         ctx->m_glGetIntegerv_enc(self, param, ptr);
     91     }
     92 }
     93 
     94 void GLEncoder::s_glGetFloatv(void *self, GLenum param, GLfloat *ptr)
     95 {
     96     GLEncoder *ctx = (GLEncoder *)self;
     97     assert(ctx->m_state != NULL);
     98     if (param == GL_COMPRESSED_TEXTURE_FORMATS) {
     99         GLint * compressedTextureFormats = ctx->getCompressedTextureFormats();
    100         if (ctx->m_num_compressedTextureFormats > 0 && compressedTextureFormats != NULL) {
    101             for (int i = 0; i < ctx->m_num_compressedTextureFormats; i++) {
    102                 ptr[i] = (GLfloat) compressedTextureFormats[i];
    103             }
    104         }
    105     }
    106     else if (!ctx->m_state->getClientStateParameter<GLfloat>(param,ptr)) {
    107         ctx->m_glGetFloatv_enc(self, param, ptr);
    108     }
    109 }
    110 
    111 void GLEncoder::s_glGetFixedv(void *self, GLenum param, GLfixed *ptr)
    112 {
    113     GLEncoder *ctx = (GLEncoder *)self;
    114     assert(ctx->m_state != NULL);
    115     if (param == GL_COMPRESSED_TEXTURE_FORMATS) {
    116         GLint * compressedTextureFormats = ctx->getCompressedTextureFormats();
    117         if (ctx->m_num_compressedTextureFormats > 0 && compressedTextureFormats != NULL) {
    118             for (int i = 0; i < ctx->m_num_compressedTextureFormats; i++) {
    119                 ptr[i] =  compressedTextureFormats[i] << 16;
    120             }
    121         }
    122     }
    123     else if (!ctx->m_state->getClientStateParameter<GLfixed>(param,ptr)) {
    124         ctx->m_glGetFixedv_enc(self, param, ptr);
    125     }
    126 }
    127 
    128 void GLEncoder::s_glGetBooleanv(void *self, GLenum param, GLboolean *ptr)
    129 {
    130     GLEncoder *ctx = (GLEncoder *)self;
    131     assert(ctx->m_state != NULL);
    132     if (param == GL_COMPRESSED_TEXTURE_FORMATS) {
    133         // ignore the command, although we should have generated a GLerror;
    134     }
    135     else if (!ctx->m_state->getClientStateParameter<GLboolean>(param,ptr)) {
    136         ctx->m_glGetBooleanv_enc(self, param, ptr);
    137     }
    138 }
    139 
    140 void GLEncoder::s_glGetPointerv(void * self, GLenum param, GLvoid **params)
    141 {
    142     GLEncoder * ctx = (GLEncoder *) self;
    143     assert(ctx->m_state != NULL);
    144     ctx->m_state->getClientStatePointer(param,params);
    145 }
    146 
    147 void GLEncoder::s_glFlush(void *self)
    148 {
    149     GLEncoder *ctx = (GLEncoder *)self;
    150     ctx->m_glFlush_enc(self);
    151     ctx->m_stream->flush();
    152 }
    153 
    154 const GLubyte *GLEncoder::s_glGetString(void *self, GLenum name)
    155 {
    156     GLubyte *retval =  (GLubyte *) "";
    157     switch(name) {
    158     case GL_VENDOR:
    159         retval = gVendorString;
    160         break;
    161     case GL_RENDERER:
    162         retval = gRendererString;
    163         break;
    164     case GL_VERSION:
    165         retval = gVersionString;
    166         break;
    167     case GL_EXTENSIONS:
    168         retval = gExtensionsString;
    169         break;
    170     }
    171     return retval;
    172 }
    173 
    174 void GLEncoder::s_glPixelStorei(void *self, GLenum param, GLint value)
    175 {
    176     GLEncoder *ctx = (GLEncoder *)self;
    177     ctx->m_glPixelStorei_enc(ctx, param, value);
    178     LOG_ASSERT(ctx->m_state, "GLEncoder::s_glPixelStorei");
    179     ctx->m_state->setPixelStore(param, value);
    180 }
    181 
    182 void GLEncoder::s_glVertexPointer(void *self, int size, GLenum type, GLsizei stride, const void *data)
    183 {
    184     GLEncoder *ctx = (GLEncoder *)self;
    185     assert(ctx->m_state != NULL);
    186     ctx->m_state->setState(GLClientState::VERTEX_LOCATION, size, type, false, stride, data);
    187 }
    188 
    189 void GLEncoder::s_glNormalPointer(void *self, GLenum type, GLsizei stride, const void *data)
    190 {
    191     GLEncoder *ctx = (GLEncoder *)self;
    192     assert(ctx->m_state != NULL);
    193     ctx->m_state->setState(GLClientState::NORMAL_LOCATION, 3, type, false, stride, data);
    194 }
    195 
    196 void GLEncoder::s_glColorPointer(void *self, int size, GLenum type, GLsizei stride, const void *data)
    197 {
    198     GLEncoder *ctx = (GLEncoder *)self;
    199     assert(ctx->m_state != NULL);
    200     ctx->m_state->setState(GLClientState::COLOR_LOCATION, size, type, false, stride, data);
    201 }
    202 
    203 void GLEncoder::s_glPointsizePointer(void *self, GLenum type, GLsizei stride, const void *data)
    204 {
    205     GLEncoder *ctx = (GLEncoder *)self;
    206     assert(ctx->m_state != NULL);
    207     ctx->m_state->setState(GLClientState::POINTSIZE_LOCATION, 1, type, false, stride, data);
    208 }
    209 
    210 void GLEncoder::s_glClientActiveTexture(void *self, GLenum texture)
    211 {
    212     GLEncoder *ctx = (GLEncoder *)self;
    213     assert(ctx->m_state != NULL);
    214     ctx->m_state->setActiveTexture(texture - GL_TEXTURE0);
    215 }
    216 
    217 void GLEncoder::s_glTexcoordPointer(void *self, int size, GLenum type, GLsizei stride, const void *data)
    218 {
    219     GLEncoder *ctx = (GLEncoder *)self;
    220     assert(ctx->m_state != NULL);
    221     int loc = ctx->m_state->getLocation(GL_TEXTURE_COORD_ARRAY);
    222     ctx->m_state->setState(loc, size, type, false, stride, data);
    223 }
    224 
    225 void GLEncoder::s_glMatrixIndexPointerOES(void *self, int size, GLenum type, GLsizei stride, const void * data)
    226 {
    227     GLEncoder *ctx = (GLEncoder *)self;
    228     assert(ctx->m_state != NULL);
    229     int loc = ctx->m_state->getLocation(GL_MATRIX_INDEX_ARRAY_OES);
    230     ctx->m_state->setState(loc, size, type, false, stride, data);
    231 }
    232 
    233 void GLEncoder::s_glWeightPointerOES(void * self, int size, GLenum type, GLsizei stride, const void * data)
    234 {
    235     GLEncoder *ctx = (GLEncoder *)self;
    236     assert(ctx->m_state != NULL);
    237     int loc = ctx->m_state->getLocation(GL_WEIGHT_ARRAY_OES);
    238     ctx->m_state->setState(loc, size, type, false, stride, data);
    239 }
    240 
    241 void GLEncoder::s_glEnableClientState(void *self, GLenum state)
    242 {
    243     GLEncoder *ctx = (GLEncoder *) self;
    244     assert(ctx->m_state != NULL);
    245     int loc = ctx->m_state->getLocation(state);
    246     ctx->m_state->enable(loc, 1);
    247 }
    248 
    249 void GLEncoder::s_glDisableClientState(void *self, GLenum state)
    250 {
    251     GLEncoder *ctx = (GLEncoder *) self;
    252     assert(ctx->m_state != NULL);
    253     int loc = ctx->m_state->getLocation(state);
    254     ctx->m_state->enable(loc, 0);
    255 }
    256 
    257 GLboolean GLEncoder::s_glIsEnabled(void *self, GLenum cap)
    258 {
    259     GLEncoder *ctx = (GLEncoder *) self;
    260     assert(ctx->m_state != NULL);
    261     int loc = ctx->m_state->getLocation(cap);
    262     const GLClientState::VertexAttribState *state = ctx->m_state->getState(loc);
    263 
    264     if (state!=NULL)
    265       return state->enabled;
    266 
    267     return ctx->m_glIsEnabled_enc(self,cap);
    268 }
    269 
    270 void GLEncoder::s_glBindBuffer(void *self, GLenum target, GLuint id)
    271 {
    272     GLEncoder *ctx = (GLEncoder *) self;
    273     assert(ctx->m_state != NULL);
    274     ctx->m_state->bindBuffer(target, id);
    275     // TODO set error state if needed;
    276     ctx->m_glBindBuffer_enc(self, target, id);
    277 }
    278 
    279 void GLEncoder::s_glBufferData(void * self, GLenum target, GLsizeiptr size, const GLvoid * data, GLenum usage)
    280 {
    281     GLEncoder *ctx = (GLEncoder *) self;
    282     GLuint bufferId = ctx->m_state->getBuffer(target);
    283     SET_ERROR_IF(bufferId==0, GL_INVALID_OPERATION);
    284     SET_ERROR_IF(size<0, GL_INVALID_VALUE);
    285 
    286     ctx->m_shared->updateBufferData(bufferId, size, (void*)data);
    287     ctx->m_glBufferData_enc(self, target, size, data, usage);
    288 }
    289 
    290 void GLEncoder::s_glBufferSubData(void * self, GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid * data)
    291 {
    292     GLEncoder *ctx = (GLEncoder *) self;
    293     GLuint bufferId = ctx->m_state->getBuffer(target);
    294     SET_ERROR_IF(bufferId==0, GL_INVALID_OPERATION);
    295 
    296     GLenum res = ctx->m_shared->subUpdateBufferData(bufferId, offset, size, (void*)data);
    297     SET_ERROR_IF(res, res);
    298 
    299     ctx->m_glBufferSubData_enc(self, target, offset, size, data);
    300 }
    301 
    302 void GLEncoder::s_glDeleteBuffers(void * self, GLsizei n, const GLuint * buffers)
    303 {
    304     GLEncoder *ctx = (GLEncoder *) self;
    305     SET_ERROR_IF(n<0, GL_INVALID_VALUE);
    306     for (int i=0; i<n; i++) {
    307         ctx->m_shared->deleteBufferData(buffers[i]);
    308         ctx->m_glDeleteBuffers_enc(self,1,&buffers[i]);
    309     }
    310 }
    311 
    312 void GLEncoder::sendVertexData(unsigned int first, unsigned int count)
    313 {
    314     assert(m_state != NULL);
    315     for (int i = 0; i < GLClientState::LAST_LOCATION; i++) {
    316         bool enableDirty;
    317         const GLClientState::VertexAttribState *state = m_state->getStateAndEnableDirty(i, &enableDirty);
    318 
    319         // do not process if state not valid
    320         if (!state) continue;
    321 
    322         // do not send disable state if state was already disabled
    323         if (!enableDirty && !state->enabled) continue;
    324 
    325         if ( i >= GLClientState::TEXCOORD0_LOCATION &&
    326             i <= GLClientState::TEXCOORD7_LOCATION ) {
    327             m_glClientActiveTexture_enc(this, GL_TEXTURE0 + i - GLClientState::TEXCOORD0_LOCATION);
    328         }
    329 
    330         if (state->enabled) {
    331 
    332             if (enableDirty)
    333                 m_glEnableClientState_enc(this, state->glConst);
    334 
    335             unsigned int datalen = state->elementSize * count;
    336             int stride = state->stride;
    337             if (stride == 0) stride = state->elementSize;
    338             int firstIndex = stride * first;
    339 
    340             if (state->bufferObject == 0) {
    341 
    342                 switch(i) {
    343                 case GLClientState::VERTEX_LOCATION:
    344                     this->glVertexPointerData(this, state->size, state->type, state->stride,
    345                                               (unsigned char *)state->data + firstIndex, datalen);
    346                     break;
    347                 case GLClientState::NORMAL_LOCATION:
    348                     this->glNormalPointerData(this, state->type, state->stride,
    349                                               (unsigned char *)state->data + firstIndex, datalen);
    350                     break;
    351                 case GLClientState::COLOR_LOCATION:
    352                     this->glColorPointerData(this, state->size, state->type, state->stride,
    353                                              (unsigned char *)state->data + firstIndex, datalen);
    354                     break;
    355                 case GLClientState::TEXCOORD0_LOCATION:
    356                 case GLClientState::TEXCOORD1_LOCATION:
    357                 case GLClientState::TEXCOORD2_LOCATION:
    358                 case GLClientState::TEXCOORD3_LOCATION:
    359                 case GLClientState::TEXCOORD4_LOCATION:
    360                 case GLClientState::TEXCOORD5_LOCATION:
    361                 case GLClientState::TEXCOORD6_LOCATION:
    362                 case GLClientState::TEXCOORD7_LOCATION:
    363                     this->glTexCoordPointerData(this, i - GLClientState::TEXCOORD0_LOCATION, state->size, state->type, state->stride,
    364                                                 (unsigned char *)state->data + firstIndex, datalen);
    365                     break;
    366                 case GLClientState::POINTSIZE_LOCATION:
    367                     this->glPointSizePointerData(this, state->type, state->stride,
    368                                                  (unsigned char *) state->data + firstIndex, datalen);
    369                     break;
    370                 case GLClientState::WEIGHT_LOCATION:
    371                     this->glWeightPointerData(this, state->size, state->type, state->stride,
    372                                               (unsigned char * ) state->data + firstIndex, datalen);
    373                     break;
    374                 case GLClientState::MATRIXINDEX_LOCATION:
    375                     this->glMatrixIndexPointerData(this, state->size, state->type, state->stride,
    376                                                   (unsigned char *)state->data + firstIndex, datalen);
    377                     break;
    378                 }
    379             } else {
    380                 this->m_glBindBuffer_enc(this, GL_ARRAY_BUFFER, state->bufferObject);
    381 
    382                 switch(i) {
    383                 case GLClientState::VERTEX_LOCATION:
    384                     this->glVertexPointerOffset(this, state->size, state->type, state->stride,
    385                                                 (GLuint)state->data + firstIndex);
    386                     break;
    387                 case GLClientState::NORMAL_LOCATION:
    388                     this->glNormalPointerOffset(this, state->type, state->stride,
    389                                                 (GLuint) state->data + firstIndex);
    390                     break;
    391                 case GLClientState::POINTSIZE_LOCATION:
    392                     this->glPointSizePointerOffset(this, state->type, state->stride,
    393                                                    (GLuint) state->data + firstIndex);
    394                     break;
    395                 case GLClientState::COLOR_LOCATION:
    396                     this->glColorPointerOffset(this, state->size, state->type, state->stride,
    397                                                (GLuint) state->data + firstIndex);
    398                     break;
    399                 case GLClientState::TEXCOORD0_LOCATION:
    400                 case GLClientState::TEXCOORD1_LOCATION:
    401                 case GLClientState::TEXCOORD2_LOCATION:
    402                 case GLClientState::TEXCOORD3_LOCATION:
    403                 case GLClientState::TEXCOORD4_LOCATION:
    404                 case GLClientState::TEXCOORD5_LOCATION:
    405                 case GLClientState::TEXCOORD6_LOCATION:
    406                 case GLClientState::TEXCOORD7_LOCATION:
    407                     this->glTexCoordPointerOffset(this, state->size, state->type, state->stride,
    408                                                   (GLuint) state->data + firstIndex);
    409                     break;
    410                 case GLClientState::WEIGHT_LOCATION:
    411                     this->glWeightPointerOffset(this,state->size,state->type,state->stride,
    412                                                 (GLuint)state->data+firstIndex);
    413                     break;
    414                 case GLClientState::MATRIXINDEX_LOCATION:
    415                     this->glMatrixIndexPointerOffset(this,state->size,state->type,state->stride,
    416                                               (GLuint)state->data+firstIndex);
    417                     break;
    418                 }
    419                 this->m_glBindBuffer_enc(this, GL_ARRAY_BUFFER, m_state->currentArrayVbo());
    420             }
    421         } else {
    422             this->m_glDisableClientState_enc(this, state->glConst);
    423         }
    424     }
    425 }
    426 
    427 void GLEncoder::s_glDrawArrays(void *self, GLenum mode, GLint first, GLsizei count)
    428 {
    429     GLEncoder *ctx = (GLEncoder *)self;
    430 
    431     ctx->sendVertexData(first, count);
    432     ctx->m_glDrawArrays_enc(ctx, mode, /*first*/ 0, count);
    433 }
    434 
    435 void GLEncoder::s_glDrawElements(void *self, GLenum mode, GLsizei count, GLenum type, const void *indices)
    436 {
    437 
    438     GLEncoder *ctx = (GLEncoder *)self;
    439     assert(ctx->m_state != NULL);
    440     SET_ERROR_IF(count<0, GL_INVALID_VALUE);
    441 
    442     bool has_immediate_arrays = false;
    443     bool has_indirect_arrays = false;
    444 
    445     for (int i = 0; i < GLClientState::LAST_LOCATION; i++) {
    446         const GLClientState::VertexAttribState *state = ctx->m_state->getState(i);
    447         if (state->enabled) {
    448             if (state->bufferObject != 0) {
    449                 has_indirect_arrays = true;
    450             } else {
    451                 has_immediate_arrays = true;
    452             }
    453         }
    454     }
    455 
    456     if (!has_immediate_arrays && !has_indirect_arrays) {
    457         LOGE("glDrawElements: no data bound to the command - ignoring\n");
    458         return;
    459     }
    460 
    461     bool adjustIndices = true;
    462     if (ctx->m_state->currentIndexVbo() != 0) {
    463         if (!has_immediate_arrays) {
    464             ctx->sendVertexData(0, count);
    465             ctx->m_glBindBuffer_enc(self, GL_ELEMENT_ARRAY_BUFFER, ctx->m_state->currentIndexVbo());
    466             ctx->glDrawElementsOffset(ctx, mode, count, type, (GLuint)indices);
    467             adjustIndices = false;
    468         } else {
    469             BufferData * buf = ctx->m_shared->getBufferData(ctx->m_state->currentIndexVbo());
    470             ctx->m_glBindBuffer_enc(self, GL_ELEMENT_ARRAY_BUFFER, 0);
    471             indices = (void*)((GLintptr)buf->m_fixedBuffer.ptr() + (GLintptr)indices);
    472         }
    473     }
    474     if (adjustIndices) {
    475         void *adjustedIndices = (void*)indices;
    476         int minIndex = 0, maxIndex = 0;
    477 
    478         switch(type) {
    479         case GL_BYTE:
    480         case GL_UNSIGNED_BYTE:
    481             GLUtils::minmax<unsigned char>((unsigned char *)indices, count, &minIndex, &maxIndex);
    482             if (minIndex != 0) {
    483                 adjustedIndices =  ctx->m_fixedBuffer.alloc(glSizeof(type) * count);
    484                 GLUtils::shiftIndices<unsigned char>((unsigned char *)indices,
    485                                                  (unsigned char *)adjustedIndices,
    486                                                  count, -minIndex);
    487             }
    488             break;
    489         case GL_SHORT:
    490         case GL_UNSIGNED_SHORT:
    491             GLUtils::minmax<unsigned short>((unsigned short *)indices, count, &minIndex, &maxIndex);
    492             if (minIndex != 0) {
    493                 adjustedIndices = ctx->m_fixedBuffer.alloc(glSizeof(type) * count);
    494                 GLUtils::shiftIndices<unsigned short>((unsigned short *)indices,
    495                                                  (unsigned short *)adjustedIndices,
    496                                                  count, -minIndex);
    497             }
    498             break;
    499         default:
    500             LOGE("unsupported index buffer type %d\n", type);
    501         }
    502         if (has_indirect_arrays || 1) {
    503             ctx->sendVertexData(minIndex, maxIndex - minIndex + 1);
    504             ctx->glDrawElementsData(ctx, mode, count, type, adjustedIndices,
    505                                       count * glSizeof(type));
    506             // XXX - OPTIMIZATION (see the other else branch) should be implemented
    507             if(!has_indirect_arrays) {
    508                 //LOGD("unoptimized drawelements !!!\n");
    509             }
    510         } else {
    511             // we are all direct arrays and immidate mode index array -
    512             // rebuild the arrays and the index array;
    513             LOGE("glDrawElements: direct index & direct buffer data - will be implemented in later versions;\n");
    514         }
    515     }
    516 }
    517 
    518 GLEncoder::GLEncoder(IOStream *stream) : gl_encoder_context_t(stream)
    519 {
    520     m_initialized = false;
    521     m_state = NULL;
    522     m_error = GL_NO_ERROR;
    523     m_num_compressedTextureFormats = 0;
    524     m_compressedTextureFormats = NULL;
    525     // overrides;
    526     m_glFlush_enc = set_glFlush(s_glFlush);
    527     m_glPixelStorei_enc = set_glPixelStorei(s_glPixelStorei);
    528     m_glVertexPointer_enc = set_glVertexPointer(s_glVertexPointer);
    529     m_glNormalPointer_enc = set_glNormalPointer(s_glNormalPointer);
    530     m_glColorPointer_enc = set_glColorPointer(s_glColorPointer);
    531     m_glPointSizePointerOES_enc = set_glPointSizePointerOES(s_glPointsizePointer);
    532     m_glClientActiveTexture_enc = set_glClientActiveTexture(s_glClientActiveTexture);
    533     m_glTexCoordPointer_enc = set_glTexCoordPointer(s_glTexcoordPointer);
    534     m_glMatrixIndexPointerOES_enc = set_glMatrixIndexPointerOES(s_glMatrixIndexPointerOES);
    535     m_glWeightPointerOES_enc = set_glWeightPointerOES(s_glWeightPointerOES);
    536 
    537     m_glGetIntegerv_enc = set_glGetIntegerv(s_glGetIntegerv);
    538     m_glGetFloatv_enc = set_glGetFloatv(s_glGetFloatv);
    539     m_glGetBooleanv_enc = set_glGetBooleanv(s_glGetBooleanv);
    540     m_glGetFixedv_enc = set_glGetFixedv(s_glGetFixedv);
    541     m_glGetPointerv_enc = set_glGetPointerv(s_glGetPointerv);
    542 
    543     m_glBindBuffer_enc = set_glBindBuffer(s_glBindBuffer);
    544     m_glBufferData_enc = set_glBufferData(s_glBufferData);
    545     m_glBufferSubData_enc = set_glBufferSubData(s_glBufferSubData);
    546     m_glDeleteBuffers_enc = set_glDeleteBuffers(s_glDeleteBuffers);
    547 
    548     m_glEnableClientState_enc = set_glEnableClientState(s_glEnableClientState);
    549     m_glDisableClientState_enc = set_glDisableClientState(s_glDisableClientState);
    550     m_glIsEnabled_enc = set_glIsEnabled(s_glIsEnabled);
    551     m_glDrawArrays_enc = set_glDrawArrays(s_glDrawArrays);
    552     m_glDrawElements_enc = set_glDrawElements(s_glDrawElements);
    553     set_glGetString(s_glGetString);
    554     set_glFinish(s_glFinish);
    555     m_glGetError_enc = set_glGetError(s_glGetError);
    556 
    557 }
    558 
    559 GLEncoder::~GLEncoder()
    560 {
    561     delete [] m_compressedTextureFormats;
    562 }
    563 
    564 size_t GLEncoder::pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack)
    565 {
    566     assert(m_state != NULL);
    567     return m_state->pixelDataSize(width, height, format, type, pack);
    568 }
    569 
    570 void GLEncoder::s_glFinish(void *self)
    571 {
    572     GLEncoder *ctx = (GLEncoder *)self;
    573     ctx->glFinishRoundTrip(self);
    574 }
    575 
    576