am 49c24102: am 97dfbff4: Merge "emulator opengl: implement glGetString"

* commit '49c24102734dd1b77c6ff7b613528c3afee782c5':
  emulator opengl: implement glGetString

tools/emulator/opengl/host/libs/libOpenglRender/RenderControl.cpp

@@ -17,6 +17,9 @@
 #include "FrameBuffer.h"
 #include "FBConfig.h"
 #include "EGLDispatch.h"
+#include "GLDispatch.h"
+#include "GL2Dispatch.h"
+#include "ThreadInfo.h"
 
 static const GLint rendererVersion = 1;
 
@@ -58,6 +61,38 @@ static EGLint rcQueryEGLString(EGLenum name, void* buffer, EGLint bufferSize)
     return len;
 }
 
+static EGLint rcGetGLString(EGLenum name, void* buffer, EGLint bufferSize)
+{
+    RenderThreadInfo *tInfo = getRenderThreadInfo();
+    if (!tInfo || !tInfo->currContext.Ptr()) {
+        return 0;
+    }
+
+    const char *str = NULL;
+#ifdef WITH_GLES2
+    if (tInfo->currContext->isGL2()) {
+        str = (const char *)s_gl2.glGetString(name);
+    }
+    else {
+#endif
+        str = (const char *)s_gl.glGetString(name);
+#ifdef WITH_GLES2
+    }
+#endif
+
+    if (!str) {
+        return 0;
+    }
+
+    int len = strlen(str) + 1;
+    if (!buffer || len > bufferSize) {
+        return -len;
+    }
+
+    strcpy((char *)buffer, str);
+    return len;
+}
+
 static EGLint rcGetNumConfigs(uint32_t* numAttribs)
 {
     if (numAttribs) {
@@ -279,6 +314,7 @@ void initRenderControlContext(renderControl_decoder_context_t *dec)
     dec->set_rcGetRendererVersion(rcGetRendererVersion);
     dec->set_rcGetEGLVersion(rcGetEGLVersion);
     dec->set_rcQueryEGLString(rcQueryEGLString);
+    dec->set_rcGetGLString(rcGetGLString);
     dec->set_rcGetNumConfigs(rcGetNumConfigs);
     dec->set_rcGetConfigs(rcGetConfigs);
     dec->set_rcChooseConfig(rcChooseConfig);

tools/emulator/opengl/system/GLESv1/gl.cpp

@@ -68,10 +68,19 @@ void finish()
     glFinish();
 }
 
+const GLubyte *my_glGetString (void *self, GLenum name)
+{
+    if (s_egl) {
+        return (const GLubyte*)s_egl->getGLString(name);
+    }
+    return NULL;
+}
+
 void init()
 {
     GET_CONTEXT;
     ctx->set_glEGLImageTargetTexture2DOES(glEGLImageTargetTexture2DOES);
+    ctx->set_glGetString(my_glGetString);
 }
 
 extern "C" {

tools/emulator/opengl/system/OpenglSystemCommon/EGLClientIface.h

@@ -5,6 +5,7 @@ struct EGLThreadInfo;  // defined in ThreadInfo.h
 
 typedef struct {
     EGLThreadInfo* (*getThreadInfo)();
+    const char* (*getGLString)(int glEnum);
 } EGLClient_eglInterface;
 
 typedef struct {

tools/emulator/opengl/system/egl/egl.cpp

@@ -142,14 +142,26 @@ struct EGLContext_t {
     EGLSurface          draw;
     EGLint                version;
     uint32_t             rcContext;
+    const char*         versionString;
+    const char*         vendorString;
+    const char*         rendererString;
+    const char*         extensionString;
 
     GLClientState * getClientState(){ return clientState; }
 private:
     GLClientState    *    clientState;
 };
 
-EGLContext_t::EGLContext_t(EGLDisplay dpy, EGLConfig config) : dpy(dpy), config(config),
-        read(EGL_NO_SURFACE), draw(EGL_NO_SURFACE), rcContext(0)
+EGLContext_t::EGLContext_t(EGLDisplay dpy, EGLConfig config) :
+    dpy(dpy),
+    config(config),
+    read(EGL_NO_SURFACE),
+    draw(EGL_NO_SURFACE),
+    rcContext(0),
+    versionString(NULL),
+    vendorString(NULL),
+    rendererString(NULL),
+    extensionString(NULL)
 {
     flags = 0;
     version = 1;
@@ -158,8 +170,13 @@ EGLContext_t::EGLContext_t(EGLDisplay dpy, EGLConfig config) : dpy(dpy), config(
 
 EGLContext_t::~EGLContext_t()
 {
-    if (clientState) delete clientState;
+    delete clientState;
+    delete [] versionString;
+    delete [] vendorString;
+    delete [] rendererString;
+    delete [] extensionString;
 }
+
 // ----------------------------------------------------------------------------
 //egl_surface_t
 
@@ -426,13 +443,76 @@ EGLBoolean egl_pbuffer_surface_t::connect()
     return EGL_TRUE;
 }
 
+static const char *getGLString(int glEnum)
+{
+    EGLThreadInfo *tInfo = getEGLThreadInfo();
+    if (!tInfo || !tInfo->currentContext) {
+        return NULL;
+    }
+
+    const char** strPtr = NULL;
+
+#define GL_VENDOR                         0x1F00
+#define GL_RENDERER                       0x1F01
+#define GL_VERSION                        0x1F02
+#define GL_EXTENSIONS                     0x1F03
+
+    switch(glEnum) {
+        case GL_VERSION:
+            strPtr = &tInfo->currentContext->versionString;
+            break;
+        case GL_VENDOR:
+            strPtr = &tInfo->currentContext->vendorString;
+            break;
+        case GL_RENDERER:
+            strPtr = &tInfo->currentContext->rendererString;
+            break;
+        case GL_EXTENSIONS:
+            strPtr = &tInfo->currentContext->extensionString;
+            break;
+    }
+
+    if (!strPtr) {
+        return NULL;
+    }
+
+    if (*strPtr != NULL) {
+        //
+        // string is already cached
+        //
+        return *strPtr;
+    }
+
+    //
+    // first query of that string - need to query host
+    //
+    DEFINE_AND_VALIDATE_HOST_CONNECTION(NULL);
+    char *hostStr = NULL;
+    int n = rcEnc->rcGetGLString(rcEnc, glEnum, NULL, 0);
+    if (n < 0) {
+        hostStr = new char[-n+1];
+        n = rcEnc->rcGetGLString(rcEnc, glEnum, hostStr, -n);
+        if (n <= 0) {
+            delete [] hostStr;
+            hostStr = NULL;
+        }
+    }
+
+    //
+    // keep the string in the context and return its value
+    //
+    *strPtr = hostStr;
+    return hostStr;
+}
+
 // ----------------------------------------------------------------------------
 
 // The one and only supported display object.
 static eglDisplay s_display;
 
 static EGLClient_eglInterface s_eglIface = {
-    getThreadInfo: getEGLThreadInfo
+    getThreadInfo: getEGLThreadInfo,
+    getGLString: getGLString
 };
 
 #define DBG_FUNC DBG("%s\n", __FUNCTION__)
@@ -931,6 +1011,9 @@ EGLBoolean eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLC
     if (tInfo->currentContext)
         tInfo->currentContext->flags &= ~EGLContext_t::IS_CURRENT;
 
+    //Now make current
+    tInfo->currentContext = context;
+
     //Check maybe we need to init the encoder, if it's first eglMakeCurrent
     if (tInfo->currentContext) {
         if (!hostCon->glEncoder()->isInitialized()) {
@@ -944,9 +1027,6 @@ EGLBoolean eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLC
         }
     }
 
-    //Now make current
-    tInfo->currentContext = context;
-
     //connect the color buffer
     if (drawSurf)
         drawSurf->connect();

tools/emulator/opengl/system/renderControl_enc/renderControl.attrib

@@ -12,6 +12,10 @@ rcQueryEGLString
     dir buffer out
     len buffer bufferSize
 
+rcGetGLString
+    dir buffer out
+    len buffer bufferSize
+
 rcGetNumConfigs
     dir numAttribs out
     len numAttribs sizeof(uint32_t)

tools/emulator/opengl/system/renderControl_enc/renderControl.in

@@ -1,6 +1,7 @@
 GL_ENRTY(GLint, rcGetRendererVersion)
 GL_ENTRY(EGLint, rcGetEGLVersion, EGLint *major, EGLint *minor)
 GL_ENTRY(EGLint, rcQueryEGLString, EGLenum name, void *buffer, EGLint bufferSize)
+GL_ENTRY(EGLint, rcGetGLString, EGLenum name, void *buffer, EGLint bufferSize)
 GL_ENTRY(EGLint, rcGetNumConfigs, uint32_t *numAttribs)
 GL_ENTRY(EGLint, rcGetConfigs, uint32_t bufSize, GLuint *buffer)
 GL_ENTRY(EGLint, rcChooseConfig, EGLint *attribs, uint32_t attribs_size, uint32_t *configs, uint32_t configs_size)