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      1 /*
      2 * Copyright 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 
     17 #include "EGLClientIface.h"
     18 #include "HostConnection.h"
     19 #include "GL2Encoder.h"
     20 #include "GLES/gl.h"
     21 #include "GLES/glext.h"
     22 #include "ErrorLog.h"
     23 #include "gralloc_cb.h"
     24 #include "ThreadInfo.h"
     25 
     26 //XXX: fix this macro to get the context from fast tls path
     27 #define GET_CONTEXT GL2Encoder * ctx = getEGLThreadInfo()->hostConn->gl2Encoder();
     28 
     29 #include "gl2_entry.cpp"
     30 
     31 //The functions table
     32 #include "gl2_ftable.h"
     33 
     34 
     35 static EGLClient_eglInterface * s_egl = NULL;
     36 static EGLClient_glesInterface * s_gl = NULL;
     37 
     38 #define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
     39     HostConnection *hostCon = HostConnection::get(); \
     40     if (!hostCon) { \
     41         ALOGE("egl: Failed to get host connection\n"); \
     42         return ret; \
     43     } \
     44     renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
     45     if (!rcEnc) { \
     46         ALOGE("egl: Failed to get renderControl encoder context\n"); \
     47         return ret; \
     48     }
     49 
     50 //GL extensions
     51 void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES image)
     52 {
     53     (void)self;
     54     (void)target;
     55 
     56     DBG("glEGLImageTargetTexture2DOES v2 target=%#x img=%p\n", target, image);
     57     //TODO: check error - we don't have a way to set gl error
     58     android_native_buffer_t* native_buffer = (android_native_buffer_t*)image;
     59 
     60     if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
     61         return;
     62     }
     63 
     64     if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
     65         return;
     66     }
     67 
     68     GET_CONTEXT;
     69     DEFINE_AND_VALIDATE_HOST_CONNECTION();
     70 
     71     ctx->override2DTextureTarget(target);
     72     rcEnc->rcBindTexture(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
     73     ctx->restore2DTextureTarget();
     74 
     75     return;
     76 }
     77 
     78 void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES image)
     79 {
     80     (void)self;
     81     (void)target;
     82 
     83     DBG("glEGLImageTargetRenderbufferStorageOES v2 image=%p\n", image);
     84     //TODO: check error - we don't have a way to set gl error
     85     android_native_buffer_t* native_buffer = (android_native_buffer_t*)image;
     86 
     87     if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
     88         return;
     89     }
     90 
     91     if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
     92         return;
     93     }
     94 
     95     DEFINE_AND_VALIDATE_HOST_CONNECTION();
     96     rcEnc->rcBindRenderbuffer(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
     97 
     98     return;
     99 }
    100 
    101 void * getProcAddress(const char * procname)
    102 {
    103     // search in GL function table
    104     for (int i=0; i<gl2_num_funcs; i++) {
    105         if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
    106             return gl2_funcs_by_name[i].proc;
    107         }
    108     }
    109     return NULL;
    110 }
    111 
    112 void finish()
    113 {
    114     glFinish();
    115 }
    116 
    117 const GLubyte *my_glGetString (void *self, GLenum name)
    118 {
    119     (void)self;
    120 
    121     if (s_egl) {
    122         return (const GLubyte*)s_egl->getGLString(name);
    123     }
    124     return NULL;
    125 }
    126 
    127 void init()
    128 {
    129     GET_CONTEXT;
    130     ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
    131     ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
    132     ctx->glGetString = &my_glGetString;
    133 }
    134 
    135 extern "C" {
    136 EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
    137 {
    138     s_egl = eglIface;
    139 
    140     if (!s_gl) {
    141         s_gl = new EGLClient_glesInterface();
    142         s_gl->getProcAddress = getProcAddress;
    143         s_gl->finish = finish;
    144         s_gl->init = init;
    145     }
    146 
    147     return s_gl;
    148 }
    149 } //extern
    150 
    151 
    152