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 "ThreadInfo.h"
24 #include "EGLImage.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 Gralloc *grallocHelper = hostCon->grallocHelper(); \
50 if (!grallocHelper) { \
51 ALOGE("egl: Failed to get grallocHelper\n"); \
52 return ret; \
53 }
54
55 //GL extensions
glEGLImageTargetTexture2DOES(void * self,GLenum target,GLeglImageOES img)56 void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
57 {
58 (void)self;
59 (void)target;
60
61 DBG("glEGLImageTargetTexture2DOES v2 target=%#x img=%p\n", target, img);
62
63 EGLImage_t *image = (EGLImage_t*)img;
64 GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
65
66 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
67 //TODO: check error - we don't have a way to set gl error
68 android_native_buffer_t* native_buffer = image->native_buffer;
69
70 if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
71 return;
72 }
73
74 if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
75 return;
76 }
77
78 GET_CONTEXT;
79 DEFINE_AND_VALIDATE_HOST_CONNECTION();
80
81 ctx->override2DTextureTarget(target);
82 ctx->associateEGLImage(target, hostImage);
83 rcEnc->rcBindTexture(rcEnc,
84 grallocHelper->getHostHandle(native_buffer->handle));
85 ctx->restore2DTextureTarget(target);
86 }
87 else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
88 GET_CONTEXT;
89 ctx->override2DTextureTarget(target);
90 ctx->associateEGLImage(target, hostImage);
91 ctx->m_glEGLImageTargetTexture2DOES_enc(self, GL_TEXTURE_2D, hostImage);
92 ctx->restore2DTextureTarget(target);
93 }
94 }
95
glEGLImageTargetRenderbufferStorageOES(void * self,GLenum target,GLeglImageOES img)96 void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES img)
97 {
98 (void)self;
99 (void)target;
100
101 DBG("glEGLImageTargetRenderbufferStorageOES v2 image=%p\n", img);
102 //TODO: check error - we don't have a way to set gl error
103 EGLImage_t *image = (EGLImage_t*)img;
104
105 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
106 android_native_buffer_t* native_buffer = ((EGLImage_t*)image)->native_buffer;
107
108 if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
109 return;
110 }
111
112 if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
113 return;
114 }
115
116 DEFINE_AND_VALIDATE_HOST_CONNECTION();
117 rcEnc->rcBindRenderbuffer(rcEnc,
118 grallocHelper->getHostHandle(native_buffer->handle));
119 } else {
120 //TODO
121 }
122
123 return;
124 }
125
getProcAddress(const char * procname)126 void * getProcAddress(const char * procname)
127 {
128 // search in GL function table
129 for (int i=0; i<gl2_num_funcs; i++) {
130 if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
131 return gl2_funcs_by_name[i].proc;
132 }
133 }
134 return NULL;
135 }
136
finish()137 void finish()
138 {
139 glFinish();
140 }
141
getIntegerv(unsigned int pname,int * param)142 void getIntegerv(unsigned int pname, int* param)
143 {
144 glGetIntegerv((GLenum)pname, (GLint*)param);
145 }
146
my_glGetString(void * self,GLenum name)147 const GLubyte *my_glGetString (void *self, GLenum name)
148 {
149 (void)self;
150
151 //see ref in https://www.khronos.org/opengles/sdk/docs/man
152 //name in glGetString can be one of the following five values
153 switch (name) {
154 case GL_VERSION:
155 case GL_VENDOR:
156 case GL_RENDERER:
157 case GL_SHADING_LANGUAGE_VERSION:
158 case GL_EXTENSIONS:
159 if (s_egl) {
160 return (const GLubyte*)s_egl->getGLString(name);
161 }
162 break;
163 default:
164 GET_CONTEXT;
165 ctx->setError(GL_INVALID_ENUM);
166 break;
167 }
168 return NULL;
169 }
170
init()171 void init()
172 {
173 GET_CONTEXT;
174 ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
175 ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
176 ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
177 ctx->glGetString = &my_glGetString;
178 }
179 extern "C" {
init_emul_gles(EGLClient_eglInterface * eglIface)180 EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
181 {
182 s_egl = eglIface;
183
184 if (!s_gl) {
185 s_gl = new EGLClient_glesInterface();
186 s_gl->getProcAddress = getProcAddress;
187 s_gl->finish = finish;
188 s_gl->init = init;
189 s_gl->getIntegerv = getIntegerv;
190 }
191
192 return s_gl;
193 }
194 } //extern
195