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 "EGLImage.h"
19 #include "GL2Encoder.h"
20 #include "GLES/gl.h"
21 #include "GLES/glext.h"
22 #include "HostConnection.h"
23 #include "ThreadInfo.h"
24
25 //XXX: fix this macro to get the context from fast tls path
26 #define GET_CONTEXT GL2Encoder * ctx = getEGLThreadInfo()->hostConn->gl2Encoder();
27
28 #include "gl2_entry.cpp"
29
30 //The functions table
31 #include "gl2_ftable.h"
32
33
34 static EGLClient_eglInterface * s_egl = NULL;
35 static EGLClient_glesInterface * s_gl = NULL;
36
37 #define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
38 HostConnection* hostCon = HostConnection::get(); \
39 if (!hostCon) { \
40 ALOGE("egl: Failed to get host connection\n"); \
41 return ret; \
42 } \
43 renderControl_encoder_context_t* rcEnc = hostCon->rcEncoder(); \
44 if (!rcEnc) { \
45 ALOGE("egl: Failed to get renderControl encoder context\n"); \
46 return ret; \
47 } \
48 auto* grallocHelper = hostCon->grallocHelper(); \
49 if (!grallocHelper) { \
50 ALOGE("egl: Failed to get grallocHelper\n"); \
51 return ret; \
52 } \
53 auto* anwHelper = hostCon->anwHelper(); \
54 if (!anwHelper) { \
55 ALOGE("egl: Failed to get anwHelper\n"); \
56 return ret; \
57 }
58
59 //GL extensions
glEGLImageTargetTexture2DOES(void * self,GLenum target,GLeglImageOES img)60 void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
61 {
62 (void)self;
63 (void)target;
64
65 EGLImage_t *image = (EGLImage_t*)img;
66 GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
67
68 GET_CONTEXT;
69 DEFINE_AND_VALIDATE_HOST_CONNECTION();
70
71 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
72 EGLClientBuffer buffer = image->buffer;
73
74 if (!anwHelper->isValid(buffer)) {
75 ALOGE("Invalid native buffer.");
76 return;
77 }
78
79 ctx->override2DTextureTarget(target);
80 ctx->associateEGLImage(target, hostImage, image->width, image->height);
81
82 const int hostHandle = anwHelper->getHostHandle(buffer, grallocHelper);
83 rcEnc->rcBindTexture(rcEnc, hostHandle);
84 ctx->restore2DTextureTarget(target);
85 } else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
86 ctx->override2DTextureTarget(target);
87 ctx->associateEGLImage(target, hostImage, image->width, image->height);
88 ctx->m_glEGLImageTargetTexture2DOES_enc(self, GL_TEXTURE_2D, hostImage);
89 ctx->restore2DTextureTarget(target);
90 }
91 }
92
glEGLImageTargetRenderbufferStorageOES(void * self,GLenum target,GLeglImageOES img)93 void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES img)
94 {
95 (void)self;
96 (void)target;
97
98 //TODO: check error - we don't have a way to set gl error
99 EGLImage_t *image = (EGLImage_t*)img;
100 GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
101
102 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
103 DEFINE_AND_VALIDATE_HOST_CONNECTION();
104
105 EGLClientBuffer buffer = image->buffer;
106 if (!anwHelper->isValid(buffer)) {
107 ALOGE("Invalid native buffer.");
108 return;
109 }
110
111 GET_CONTEXT;
112 ctx->associateEGLImage(target, hostImage, image->width, image->height);
113
114 const int hostHandle = anwHelper->getHostHandle(buffer, grallocHelper);
115 rcEnc->rcBindRenderbuffer(rcEnc, hostHandle);
116 } else {
117 //TODO
118 }
119
120 return;
121 }
122
getProcAddress(const char * procname)123 void * getProcAddress(const char * procname)
124 {
125 // search in GL function table
126 for (int i=0; i<gl2_num_funcs; i++) {
127 if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
128 return gl2_funcs_by_name[i].proc;
129 }
130 }
131 return NULL;
132 }
133
finish()134 void finish()
135 {
136 glFinish();
137 }
138
getIntegerv(unsigned int pname,int * param)139 void getIntegerv(unsigned int pname, int* param)
140 {
141 glGetIntegerv((GLenum)pname, (GLint*)param);
142 }
143
my_glGetString(void * self,GLenum name)144 const GLubyte *my_glGetString (void *self, GLenum name)
145 {
146 (void)self;
147
148 //see ref in https://www.khronos.org/opengles/sdk/docs/man
149 //name in glGetString can be one of the following five values
150 switch (name) {
151 case GL_VERSION:
152 case GL_VENDOR:
153 case GL_RENDERER:
154 case GL_SHADING_LANGUAGE_VERSION:
155 case GL_EXTENSIONS:
156 if (s_egl) {
157 return (const GLubyte*)s_egl->getGLString(name);
158 }
159 break;
160 default:
161 GET_CONTEXT;
162 ctx->setError(GL_INVALID_ENUM);
163 break;
164 }
165 return NULL;
166 }
167
init()168 void init()
169 {
170 GET_CONTEXT;
171 ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
172 ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
173 ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
174 ctx->glGetString = &my_glGetString;
175 }
176 extern "C" {
init_emul_gles(EGLClient_eglInterface * eglIface)177 EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
178 {
179 s_egl = eglIface;
180
181 if (!s_gl) {
182 s_gl = new EGLClient_glesInterface();
183 s_gl->getProcAddress = getProcAddress;
184 s_gl->finish = finish;
185 s_gl->init = init;
186 s_gl->getIntegerv = getIntegerv;
187 }
188
189 return s_gl;
190 }
191 } //extern
192