upload android base code part6

android/device/generic/goldfish-opengl/system/GLESv2/gl2.cpp

@@ -0,0 +1,182 @@
+/*
+* Copyright 2011 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "EGLClientIface.h"
+#include "HostConnection.h"
+#include "GL2Encoder.h"
+#include "GLES/gl.h"
+#include "GLES/glext.h"
+#include "ErrorLog.h"
+#include "gralloc_cb.h"
+#include "ThreadInfo.h"
+#include "EGLImage.h"
+
+//XXX: fix this macro to get the context from fast tls path
+#define GET_CONTEXT GL2Encoder * ctx = getEGLThreadInfo()->hostConn->gl2Encoder();
+
+#include "gl2_entry.cpp"
+
+//The functions table
+#include "gl2_ftable.h"
+
+
+static EGLClient_eglInterface * s_egl = NULL;
+static EGLClient_glesInterface * s_gl = NULL;
+
+#define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
+    HostConnection *hostCon = HostConnection::get(); \
+    if (!hostCon) { \
+        ALOGE("egl: Failed to get host connection\n"); \
+        return ret; \
+    } \
+    renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
+    if (!rcEnc) { \
+        ALOGE("egl: Failed to get renderControl encoder context\n"); \
+        return ret; \
+    }
+
+//GL extensions
+void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
+{
+    (void)self;
+    (void)target;
+
+    DBG("glEGLImageTargetTexture2DOES v2 target=%#x img=%p\n", target, img);
+
+    EGLImage_t *image = (EGLImage_t*)img;
+    GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
+
+    if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
+        //TODO: check error - we don't have a way to set gl error
+        android_native_buffer_t* native_buffer = image->native_buffer;
+
+        if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
+            return;
+        }
+
+        if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
+            return;
+        }
+
+        GET_CONTEXT;
+        DEFINE_AND_VALIDATE_HOST_CONNECTION();
+
+        ctx->override2DTextureTarget(target);
+        ctx->associateEGLImage(target, hostImage);
+        rcEnc->rcBindTexture(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
+        ctx->restore2DTextureTarget(target);
+    }
+    else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
+        GET_CONTEXT;
+        ctx->override2DTextureTarget(target);
+        ctx->associateEGLImage(target, hostImage);
+        ctx->m_glEGLImageTargetTexture2DOES_enc(self, target, hostImage);
+        ctx->restore2DTextureTarget(target);
+    }
+}
+
+void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES image)
+{
+    (void)self;
+    (void)target;
+
+    DBG("glEGLImageTargetRenderbufferStorageOES v2 image=%p\n", image);
+    //TODO: check error - we don't have a way to set gl error
+    android_native_buffer_t* native_buffer = (android_native_buffer_t*)image;
+
+    if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
+        return;
+    }
+
+    if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
+        return;
+    }
+
+    DEFINE_AND_VALIDATE_HOST_CONNECTION();
+    rcEnc->rcBindRenderbuffer(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
+
+    return;
+}
+
+void * getProcAddress(const char * procname)
+{
+    // search in GL function table
+    for (int i=0; i<gl2_num_funcs; i++) {
+        if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
+            return gl2_funcs_by_name[i].proc;
+        }
+    }
+    return NULL;
+}
+
+void finish()
+{
+    glFinish();
+}
+
+void getIntegerv(unsigned int pname, int* param)
+{
+    glGetIntegerv((GLenum)pname, (GLint*)param);
+}
+
+const GLubyte *my_glGetString (void *self, GLenum name)
+{
+    (void)self;
+
+    //see ref in https://www.khronos.org/opengles/sdk/docs/man
+    //name in glGetString can be one of the following five values
+    switch (name) {
+        case GL_VERSION:
+        case GL_VENDOR:
+        case GL_RENDERER:
+        case GL_SHADING_LANGUAGE_VERSION:
+        case GL_EXTENSIONS:
+            if (s_egl) {
+                return (const GLubyte*)s_egl->getGLString(name);
+            }
+            break;
+        default:
+            GET_CONTEXT;
+            ctx->setError(GL_INVALID_ENUM);
+            break;
+    }
+    return NULL;
+}
+
+void init()
+{
+    GET_CONTEXT;
+    ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
+    ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
+    ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
+    ctx->glGetString = &my_glGetString;
+}
+extern "C" {
+EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
+{
+    s_egl = eglIface;
+
+    if (!s_gl) {
+        s_gl = new EGLClient_glesInterface();
+        s_gl->getProcAddress = getProcAddress;
+        s_gl->finish = finish;
+        s_gl->init = init;
+        s_gl->getIntegerv = getIntegerv;
+    }
+
+    return s_gl;
+}
+} //extern