diff options
Diffstat (limited to 'src/VBox/Additions/common/crOpenGL/egl.c')
| -rw-r--r-- | src/VBox/Additions/common/crOpenGL/egl.c | 967 |
1 files changed, 967 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/crOpenGL/egl.c b/src/VBox/Additions/common/crOpenGL/egl.c new file mode 100644 index 00000000..3d8a636d --- /dev/null +++ b/src/VBox/Additions/common/crOpenGL/egl.c @@ -0,0 +1,967 @@ +/* $Id: egl.c $ */ + +/** @file + * VBox OpenGL EGL implentation. + */ + +/* + * Copyright (C) 2009-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/cdefs.h> +#include <iprt/types.h> + +#include <EGL/egl.h> +#include <GL/glx.h> +#include <X11/Xlib.h> + +#include <dlfcn.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#define EGL_ASSERT(expr) \ + if (!(expr)) { printf("Assertion failed: %s\n", #expr); exit(1); } + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ + +struct VBEGLTLS +{ + /** The last EGL error. */ + EGLint cErr; + /** The EGL API currently bound to this thread. */ + EGLenum enmAPI; + /** The current context. */ + EGLContext hCurrent; + /** The display bound to the current context. */ + EGLDisplay hCurrentDisplay; + /** The draw surface bound to the current context. */ + EGLSurface hCurrentDraw; + /** The read surface bound to the current context. */ + EGLSurface hCurrentRead; +}; + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** @note IDs returned for surfaces should always be lower than these constants. + */ +/** This is OR-ed with a surface ID to mark it as a window, as GLX needs to + * know. */ +#define VBEGL_WINDOW_SURFACE 0x20000000 +/** This is OR-ed with a surface ID to mark it as a pbuffer, as GLX needs to + * know. */ +#define VBEGL_PBUFFER_SURFACE 0x40000000 +/** This is OR-ed with a surface ID to mark it as a pixmap, as GLX needs to + * know. */ +#define VBEGL_PIXMAP_SURFACE 0x80000000 +#define VBEGL_ANY_SURFACE (VBEGL_WINDOW_SURFACE | VBEGL_PBUFFER_SURFACE | VBEGL_PIXMAP_SURFACE) + + +/********************************************************************************************************************************* +* Global variables * +*********************************************************************************************************************************/ + +static pthread_key_t g_tls; +static pthread_once_t g_tlsOnce = PTHREAD_ONCE_INIT; +static Display *g_pDefaultDisplay = NULL; +static pthread_once_t g_defaultDisplayOnce = PTHREAD_ONCE_INIT; + +static void tlsInitOnce(void) +{ + pthread_key_create(&g_tls, NULL); +} + +static struct VBEGLTLS *getTls(void) +{ + struct VBEGLTLS *pTls; + + pthread_once(&g_tlsOnce, tlsInitOnce); + pTls = (struct VBEGLTLS *)pthread_getspecific(g_tls); + if (RT_LIKELY(pTls)) + return pTls; + pTls = (struct VBEGLTLS *)malloc(sizeof(*pTls)); + if (!pTls) + return NULL; + pTls->cErr = EGL_SUCCESS; + pTls->enmAPI = EGL_NONE; + pTls->hCurrent = EGL_NO_CONTEXT; + pTls->hCurrentDisplay = EGL_NO_DISPLAY; + pTls->hCurrentDraw = EGL_NO_SURFACE; + pTls->hCurrentRead = EGL_NO_SURFACE; + if (pthread_setspecific(g_tls, pTls) == 0) + return pTls; + free(pTls); + return NULL; +} + +static void defaultDisplayInitOnce(void) +{ + g_pDefaultDisplay = XOpenDisplay(NULL); +} + +static EGLBoolean clearEGLError(void) +{ + struct VBEGLTLS *pTls = getTls(); + + if (!VALID_PTR(pTls)) + return EGL_FALSE; + pTls->cErr = EGL_SUCCESS; + return EGL_TRUE; +} + +static EGLBoolean setEGLError(EGLint cErr) +{ + struct VBEGLTLS *pTls = getTls(); + + if (pTls) + pTls->cErr = cErr; + return EGL_FALSE; +} + +static EGLBoolean testValidDisplay(EGLNativeDisplayType hDisplay) +{ + void *pSymbol = dlsym(NULL, "gbm_create_device"); + + if (hDisplay == EGL_DEFAULT_DISPLAY) + return EGL_TRUE; + if ((void *)hDisplay == NULL) + return EGL_FALSE; + /* This is the test that Mesa uses to see if this is a GBM "display". Not + * very pretty, but since no one can afford to break Mesa it should be + * safe. We need this to detect when the X server tries to load us. */ + if (pSymbol != NULL && *(void **)hDisplay == pSymbol) + return EGL_FALSE; + return EGL_TRUE; +} + +DECLEXPORT(EGLDisplay) eglGetDisplay(EGLNativeDisplayType hDisplay) +{ + Display *pDisplay; + + if (!testValidDisplay(hDisplay)) + return EGL_NO_DISPLAY; + if (!clearEGLError()) /* Set up our tls. */ + return EGL_NO_DISPLAY; + if (hDisplay != EGL_DEFAULT_DISPLAY) + pDisplay = hDisplay; + else + { + pthread_once(&g_defaultDisplayOnce, defaultDisplayInitOnce); + pDisplay = g_pDefaultDisplay; + } + if (pDisplay && !strcmp(glXGetClientString(pDisplay, GLX_VENDOR), "Chromium")) + return (EGLDisplay) pDisplay; + return EGL_NO_DISPLAY; +} + +DECLEXPORT(EGLint) eglGetError(void) +{ + struct VBEGLTLS *pTls = getTls(); + + if (pTls) + return pTls->cErr; + return EGL_NOT_INITIALIZED; +} + +DECLEXPORT(EGLBoolean) eglInitialize (EGLDisplay hDisplay, EGLint *pcMajor, EGLint *pcMinor) +{ + if (hDisplay == EGL_NO_DISPLAY) + return EGL_FALSE; + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_BAD_DISPLAY); + if (pcMajor) + *pcMajor = 1; + if (pcMinor) + *pcMinor = 4; + return clearEGLError(); +} + +/** @todo This function should terminate all allocated resources. */ +DECLEXPORT(EGLBoolean) eglTerminate(EGLDisplay hDisplay) +{ + if (!VALID_PTR(hDisplay)) + return EGL_FALSE; + return EGL_TRUE; +} + +DECLEXPORT(const char *) eglQueryString(EGLDisplay hDisplay, EGLint name) +{ + RT_NOREF(hDisplay); + switch (name) + { + case EGL_CLIENT_APIS: + return "OpenGL"; + case EGL_VENDOR: + return "Chromium"; + case EGL_VERSION: + return "1.4 Chromium"; + case EGL_EXTENSIONS: + return ""; + default: + return NULL; + } +} + +DECLEXPORT(EGLBoolean) eglGetConfigs (EGLDisplay hDisplay, EGLConfig *paConfigs, EGLint caConfigs, EGLint *pcaConfigs) +{ + Display *pDisplay = (Display *)hDisplay; + GLXFBConfig *paFBConfigs; + int caFBConfigs, i; + + if (!VALID_PTR(pDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + if (!VALID_PTR(pcaConfigs)) + return setEGLError(EGL_BAD_PARAMETER); + if (caConfigs > 0 && !VALID_PTR(paConfigs)) + return setEGLError(EGL_BAD_PARAMETER); + paFBConfigs = glXGetFBConfigs(pDisplay, DefaultScreen(pDisplay), &caFBConfigs); + if (!VALID_PTR(paFBConfigs)) + return setEGLError(EGL_BAD_PARAMETER); + if (caFBConfigs > caConfigs) + caFBConfigs = caConfigs; + *pcaConfigs = caFBConfigs; + for (i = 0; i < caFBConfigs; ++i) + paConfigs[i] = (EGLConfig)paFBConfigs[i]; + XFree(paFBConfigs); + return clearEGLError(); +} + +static int convertEGLAttribToGLX(EGLint a_EGLAttrib) +{ + switch (a_EGLAttrib) + { + case EGL_BUFFER_SIZE: + return GLX_BUFFER_SIZE; + case EGL_RED_SIZE: + return GLX_RED_SIZE; + case EGL_GREEN_SIZE: + return GLX_GREEN_SIZE; + case EGL_BLUE_SIZE: + return GLX_BLUE_SIZE; + case EGL_LUMINANCE_SIZE: + return GLX_RED_SIZE; + case EGL_ALPHA_SIZE: + return GLX_ALPHA_SIZE; + /* case EGL_ALPHA_MASK_SIZE: */ + /* case EGL_BIND_TO_TEXTURE_RGB: */ + /* case EGL_BIND_TO_TEXTURE_RGBA: */ + /* case EGL_COLOR_BUFFER_TYPE: */ + /* case EGL_CONFIG_CAVEAT: */ + case EGL_CONFIG_ID: + return GLX_FBCONFIG_ID; + /* case EGL_CONFORMANT: */ + case EGL_DEPTH_SIZE: + return GLX_DEPTH_SIZE; + case EGL_LEVEL: + return GLX_LEVEL; + case EGL_MAX_PBUFFER_WIDTH: + return GLX_MAX_PBUFFER_WIDTH; + case EGL_MAX_PBUFFER_HEIGHT: + return GLX_MAX_PBUFFER_HEIGHT; + case EGL_MAX_PBUFFER_PIXELS: + return GLX_MAX_PBUFFER_PIXELS; + /* case EGL_MATCH_NATIVE_PIXMAP: */ + /* case EGL_MAX_SWAP_INTERVAL: */ + /* case EGL_MIN_SWAP_INTERVAL: */ + case EGL_NATIVE_RENDERABLE: + return GLX_X_RENDERABLE; + case EGL_NATIVE_VISUAL_ID: + return GLX_VISUAL_ID; + /* case EGL_NATIVE_VISUAL_TYPE: */ + /* case EGL_RENDERABLE_TYPE: */ + case EGL_SAMPLE_BUFFERS: + return GLX_SAMPLE_BUFFERS; + case EGL_SAMPLES: + return GLX_SAMPLES; + case EGL_STENCIL_SIZE: + return GLX_STENCIL_SIZE; + /* case EGL_SURFACE_TYPE: */ + /* case EGL_TRANSPARENT_TYPE: */ + case EGL_TRANSPARENT_RED_VALUE: + return GLX_TRANSPARENT_RED_VALUE; + case EGL_TRANSPARENT_GREEN_VALUE: + return GLX_TRANSPARENT_GREEN_VALUE; + case EGL_TRANSPARENT_BLUE_VALUE: + return GLX_TRANSPARENT_BLUE_VALUE; + default: + return None; + } +} + +DECLEXPORT(EGLBoolean) eglChooseConfig (EGLDisplay hDisplay, const EGLint *paAttribs, EGLConfig *paConfigs, EGLint caConfigs, + EGLint *pcConfigs) +{ + Display *pDisplay = (Display *)hDisplay; + int aAttribList[256]; /* The list cannot be this long. */ + unsigned cAttribs = 0, i; + const EGLint *pAttrib, *pAttrib2; + EGLint cRenderableType = EGL_OPENGL_ES_BIT; + unsigned cConfigCaveat = GLX_DONT_CARE, cConformant = GLX_DONT_CARE; + GLXFBConfig *paFBConfigs; + int caFBConfigs; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + if (!VALID_PTR(pcConfigs)) + return setEGLError(EGL_BAD_PARAMETER); + if (caConfigs > 0 && !VALID_PTR(paConfigs)) + return setEGLError(EGL_BAD_PARAMETER); + for (pAttrib = paAttribs; pAttrib != NULL && *pAttrib != EGL_NONE; pAttrib += 2) + { + bool fSkip = false; + int cGLXAttrib; + + /* Check for illegal values. */ + if ((*pAttrib == EGL_LEVEL || *pAttrib == EGL_MATCH_NATIVE_PIXMAP) && pAttrib[1] == EGL_DONT_CARE) + return setEGLError(EGL_BAD_ATTRIBUTE); + /* Check for values we can't handle. */ + if ( (*pAttrib == EGL_ALPHA_MASK_SIZE) + && pAttrib[1] != EGL_DONT_CARE && pAttrib[1] != 0) + return setEGLError(EGL_BAD_ACCESS); + /** @todo try creating a pixmap from a native one with the configurations returned. */ + if (*pAttrib == EGL_MATCH_NATIVE_PIXMAP) + return setEGLError(EGL_BAD_ACCESS); + if ( ( *pAttrib == EGL_MIN_SWAP_INTERVAL || *pAttrib == EGL_MAX_SWAP_INTERVAL + || *pAttrib == EGL_BIND_TO_TEXTURE_RGB || *pAttrib == EGL_BIND_TO_TEXTURE_RGBA) + && pAttrib[1] != EGL_DONT_CARE) + return setEGLError(EGL_BAD_ACCESS); + /* Ignore attributes which are repeated later. */ + for (pAttrib2 = pAttrib + 2; *pAttrib2 != EGL_NONE; pAttrib2 += 2) + if (*pAttrib2 == *pAttrib) + { + fSkip = true; + break; + } + + if (fSkip) + continue; + cGLXAttrib = convertEGLAttribToGLX(*pAttrib); + if (cGLXAttrib != None) + { + aAttribList[cAttribs] = cGLXAttrib; + if (pAttrib[1] == EGL_DONT_CARE) + aAttribList[cAttribs + 1] = GLX_DONT_CARE; + else + aAttribList[cAttribs + 1] = pAttrib[1]; + cAttribs += 2; + } + else + { + switch (*pAttrib) + { + case EGL_COLOR_BUFFER_TYPE: + aAttribList[cAttribs] = GLX_X_VISUAL_TYPE; + aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE + : pAttrib[1] == EGL_RGB_BUFFER ? GLX_TRUE_COLOR + : pAttrib[1] == EGL_LUMINANCE_BUFFER ? GLX_GRAY_SCALE + : GL_FALSE; + if ( *pAttrib == EGL_COLOR_BUFFER_TYPE + && pAttrib[1] != EGL_DONT_CARE && pAttrib[1] != EGL_RGB_BUFFER) + return setEGLError(EGL_BAD_ACCESS); + break; + case EGL_CONFIG_CAVEAT: + cConfigCaveat = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE + : pAttrib[1] == EGL_NONE ? GLX_NONE + : pAttrib[1] == EGL_SLOW_CONFIG ? GLX_SLOW_CONFIG + : pAttrib[1] == EGL_NON_CONFORMANT_CONFIG ? GLX_NON_CONFORMANT_CONFIG + : GL_FALSE; + if (!cConfigCaveat) + return setEGLError(EGL_BAD_ATTRIBUTE); + cAttribs -= 2; + break; + case EGL_CONFORMANT: + if (pAttrib[1] != EGL_OPENGL_BIT && pAttrib[1] != 0) + return setEGLError(EGL_BAD_ACCESS); + cConformant = pAttrib[1] == EGL_OPENGL_BIT ? GL_TRUE : GL_FALSE; + cAttribs -= 2; + break; + case EGL_NATIVE_VISUAL_TYPE: + aAttribList[cAttribs] = GLX_X_VISUAL_TYPE; + aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE + : pAttrib[1] == StaticGray ? GLX_STATIC_GRAY + : pAttrib[1] == StaticColor ? GLX_STATIC_COLOR + : pAttrib[1] == TrueColor ? GLX_TRUE_COLOR + : pAttrib[1] == GrayScale ? GLX_GRAY_SCALE + : pAttrib[1] == PseudoColor ? GLX_PSEUDO_COLOR + : pAttrib[1] == DirectColor ? GLX_DIRECT_COLOR + : GL_FALSE; + break; + case EGL_RENDERABLE_TYPE: + cRenderableType = pAttrib[1]; + cAttribs -= 2; /* We did not add anything to the list. */ + break; + case EGL_SURFACE_TYPE: + if (pAttrib[1] & ~(EGL_PBUFFER_BIT | EGL_PIXMAP_BIT | EGL_WINDOW_BIT)) + return setEGLError(EGL_BAD_ACCESS); + aAttribList[cAttribs] = GLX_DRAWABLE_TYPE; + aAttribList[cAttribs + 1] = (pAttrib[1] & EGL_PBUFFER_BIT ? GLX_PBUFFER_BIT : 0) + | (pAttrib[1] & EGL_PIXMAP_BIT ? GLX_PIXMAP_BIT : 0) + | (pAttrib[1] & EGL_WINDOW_BIT ? GLX_WINDOW_BIT : 0); + break; + case EGL_TRANSPARENT_TYPE: + aAttribList[cAttribs] = GLX_TRANSPARENT_TYPE; + aAttribList[cAttribs + 1] = pAttrib[1] == EGL_DONT_CARE ? GLX_DONT_CARE + : pAttrib[1] == EGL_NONE ? GLX_NONE + : pAttrib[1] == EGL_TRANSPARENT_RGB ? GLX_TRANSPARENT_RGB + : GL_FALSE; + break; + default: + return setEGLError(EGL_BAD_ATTRIBUTE); + } + cAttribs += 2; + } + } + if (cConfigCaveat != GLX_DONT_CARE || cConformant != GLX_DONT_CARE) + { + aAttribList[cAttribs] = GLX_CONFIG_CAVEAT; + aAttribList[cAttribs + 1] = cConformant == GL_FALSE ? GLX_NON_CONFORMANT_CONFIG + : cConfigCaveat == EGL_SLOW_CONFIG ? GLX_SLOW_CONFIG + : GLX_NONE; + cAttribs += 2; + } + aAttribList[cAttribs] = GLX_RENDER_TYPE; + aAttribList[cAttribs + 1] = GLX_RGBA_BIT; + cAttribs += 2; + if (paAttribs != NULL) + { + aAttribList[cAttribs] = None; + EGL_ASSERT(cAttribs < RT_ELEMENTS(aAttribList)); + if (!(cRenderableType & EGL_OPENGL_BIT)) + return setEGLError(EGL_BAD_ACCESS); + } + paFBConfigs = glXChooseFBConfig(pDisplay, DefaultScreen(pDisplay), paAttribs != NULL ? aAttribList : NULL, &caFBConfigs); + if (paFBConfigs == NULL) + return setEGLError(EGL_BAD_ACCESS); + *pcConfigs = caFBConfigs; + for (i = 0; (GLint)i < caConfigs && (GLint)i < caFBConfigs; ++i) + paConfigs[i] = (EGLConfig)paFBConfigs[i]; + XFree(paFBConfigs); + return clearEGLError(); +} + +DECLEXPORT(EGLBoolean) eglGetConfigAttrib (EGLDisplay hDisplay, EGLConfig cConfig, EGLint cAttribute, EGLint *pValue) +{ + Display *pDisplay = (Display *)hDisplay; + int cGLXAttribute = convertEGLAttribToGLX(cAttribute); + int cValue; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + if (!VALID_PTR(pValue)) + return setEGLError(EGL_BAD_PARAMETER); + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_FBCONFIG_ID, &cValue)) + return setEGLError(EGL_BAD_CONFIG); + if (cGLXAttribute != None) + { + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, cGLXAttribute, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue; + return clearEGLError(); + } + switch (cAttribute) + { + case EGL_ALPHA_MASK_SIZE: + *pValue = 0; + return clearEGLError(); + case EGL_LUMINANCE_SIZE: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + if (cValue == GLX_STATIC_GRAY || cValue == GLX_GRAY_SCALE) + { + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_RED_SIZE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue; + } + else + *pValue = 0; + return clearEGLError(); + case EGL_COLOR_BUFFER_TYPE: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + if (cValue == GLX_STATIC_GRAY || cValue == GLX_GRAY_SCALE) + *pValue = EGL_LUMINANCE_BUFFER; + else + *pValue = EGL_RGB_BUFFER; + return clearEGLError(); + case EGL_CONFIG_CAVEAT: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_CONFIG_CAVEAT, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue == GLX_NONE ? EGL_NONE : cValue == GLX_SLOW_CONFIG ? EGL_SLOW_CONFIG : GLX_NON_CONFORMANT_CONFIG; + return clearEGLError(); + case EGL_CONFORMANT: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_CONFIG_CAVEAT, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue == GLX_NON_CONFORMANT_CONFIG ? 0 : EGL_OPENGL_BIT; + return clearEGLError(); + case EGL_MATCH_NATIVE_PIXMAP: + case EGL_MIN_SWAP_INTERVAL: + case EGL_MAX_SWAP_INTERVAL: + return setEGLError(EGL_BAD_ACCESS); + case EGL_NATIVE_VISUAL_TYPE: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_X_VISUAL_TYPE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue == GLX_STATIC_GRAY ? StaticGray + : cValue == GLX_STATIC_COLOR ? StaticColor + : cValue == GLX_TRUE_COLOR ? TrueColor + : cValue == GLX_GRAY_SCALE ? GrayScale + : cValue == GLX_PSEUDO_COLOR ? PseudoColor + : cValue == GLX_DIRECT_COLOR ? DirectColor + : -1; + return clearEGLError(); + case EGL_RENDERABLE_TYPE: + *pValue = EGL_OPENGL_BIT; + return clearEGLError(); + case EGL_SURFACE_TYPE: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_DRAWABLE_TYPE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = (cValue & GLX_PBUFFER_BIT ? EGL_PBUFFER_BIT : 0) + | (cValue & GLX_PIXMAP_BIT ? EGL_PIXMAP_BIT : 0) + | (cValue & GLX_WINDOW_BIT ? EGL_WINDOW_BIT : 0); + return clearEGLError(); + case EGL_TRANSPARENT_TYPE: + if (glXGetFBConfigAttrib(pDisplay, (GLXFBConfig)cConfig, GLX_TRANSPARENT_TYPE, &cValue)) + return setEGLError(EGL_BAD_ACCESS); + *pValue = cValue == GLX_NONE ? EGL_NONE + : cValue == GLX_TRANSPARENT_RGB ? EGL_TRANSPARENT_RGB + : EGL_FALSE; + return *pValue != EGL_FALSE ? clearEGLError() : setEGLError(EGL_BAD_ACCESS); + default: + return setEGLError(EGL_BAD_ATTRIBUTE); + } + return clearEGLError(); +} + +DECLEXPORT(EGLSurface) eglCreateWindowSurface(EGLDisplay hDisplay, EGLConfig config, EGLNativeWindowType hWindow, + const EGLint *paAttributes) +{ + Display *pDisplay = (Display *)hDisplay; + GLXWindow hGLXWindow; + + if (!VALID_PTR(hDisplay)) + { + setEGLError(EGL_NOT_INITIALIZED); + return EGL_NO_SURFACE; + } + if (paAttributes != NULL) /* Sanity test only. */ + while (*paAttributes != EGL_NONE) + { + if (*paAttributes != EGL_RENDER_BUFFER) + { + setEGLError(EGL_BAD_MATCH); + return EGL_NO_SURFACE; + } + paAttributes += 2; + } + hGLXWindow = glXCreateWindow(pDisplay, (GLXFBConfig)config, (Window)hWindow, NULL); + if (hGLXWindow == None) + { + setEGLError(EGL_BAD_ALLOC); + return EGL_NO_SURFACE; + } + EGL_ASSERT(hGLXWindow < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */ + clearEGLError(); + return (EGLSurface)(hGLXWindow | VBEGL_WINDOW_SURFACE); +} + +static void setAttribute(int *pcStoreIndex, int *pcCurIndex, int *paGLXAttributes, int cAttribute, int cValue) +{ + if (*pcStoreIndex < 0) + { + *pcStoreIndex = *pcCurIndex; + *pcCurIndex += 2; + paGLXAttributes[*pcStoreIndex] = cAttribute; + } + paGLXAttributes[*pcStoreIndex + 1] = cValue; +} + +DECLEXPORT(EGLSurface) eglCreatePbufferSurface(EGLDisplay hDisplay, EGLConfig config, EGLint const *paAttributes) +{ + Display *pDisplay = (Display *)hDisplay; + enum { CPS_WIDTH = 0, CPS_HEIGHT, CPS_LARGEST, CPS_PRESERVED, CPS_TEX_FORMAT, CPS_TEX_TARGET, CPS_MIPMAP_TEX, CPS_END }; + int acIndices[CPS_END]; + int aAttributes[CPS_END * 2]; + int cIndex = 0; + unsigned i; + GLXPbuffer hPbuffer; + + if (!VALID_PTR(hDisplay)) + { + setEGLError(EGL_NOT_INITIALIZED); + return EGL_NO_SURFACE; + } + for (i = 0; i < RT_ELEMENTS(acIndices); ++i) + acIndices[i] = -1; + if (paAttributes != NULL) + while (*paAttributes != EGL_NONE) + { + switch (*paAttributes) + { + case EGL_WIDTH: + setAttribute(&acIndices[CPS_WIDTH], &cIndex, aAttributes, GLX_PBUFFER_WIDTH, paAttributes[1]); + break; + case EGL_HEIGHT: + setAttribute(&acIndices[CPS_HEIGHT], &cIndex, aAttributes, GLX_LARGEST_PBUFFER, paAttributes[1]); + break; + case EGL_LARGEST_PBUFFER: + setAttribute(&acIndices[CPS_LARGEST], &cIndex, aAttributes, GLX_PBUFFER_HEIGHT, paAttributes[1]); + break; + case EGL_BUFFER_PRESERVED: + setAttribute(&acIndices[CPS_PRESERVED], &cIndex, aAttributes, GLX_PRESERVED_CONTENTS, paAttributes[1]); + break; + case EGL_TEXTURE_FORMAT: + setAttribute(&acIndices[CPS_TEX_FORMAT], &cIndex, aAttributes, GLX_TEXTURE_FORMAT_EXT, paAttributes[1]); + break; + case EGL_TEXTURE_TARGET: + setAttribute(&acIndices[CPS_TEX_TARGET], &cIndex, aAttributes, GLX_TEXTURE_TARGET_EXT, paAttributes[1]); + break; + case EGL_MIPMAP_TEXTURE: + setAttribute(&acIndices[CPS_MIPMAP_TEX], &cIndex, aAttributes, GLX_MIPMAP_TEXTURE_EXT, paAttributes[1]); + break; + case EGL_VG_ALPHA_FORMAT: + case EGL_VG_COLORSPACE: + { + setEGLError(EGL_BAD_MATCH); + return EGL_NO_SURFACE; + } + } + paAttributes += 2; + } + EGL_ASSERT((unsigned)cIndex < RT_ELEMENTS(aAttributes) - 1U); + aAttributes[cIndex + 1] = None; + hPbuffer = glXCreatePbuffer(pDisplay, (GLXFBConfig)config, aAttributes); + if (hPbuffer == None) + { + setEGLError(EGL_BAD_ALLOC); + return EGL_NO_SURFACE; + } + EGL_ASSERT(hPbuffer < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */ + clearEGLError(); + return (EGLSurface)(hPbuffer | VBEGL_PBUFFER_SURFACE); +} + +DECLEXPORT(EGLSurface) eglCreatePixmapSurface(EGLDisplay hDisplay, EGLConfig config, EGLNativePixmapType hPixmap, + const EGLint *paAttributes) +{ + Display *pDisplay = (Display *)hDisplay; + GLXPixmap hGLXPixmap; + + if (!VALID_PTR(hDisplay)) + { + setEGLError(EGL_NOT_INITIALIZED); + return EGL_NO_SURFACE; + } + if (paAttributes != NULL) /* Sanity test only. */ + if (*paAttributes != EGL_NONE) + { + if (*paAttributes == EGL_VG_COLORSPACE || *paAttributes == EGL_VG_ALPHA_FORMAT) + { + setEGLError(EGL_BAD_MATCH); + return EGL_NO_SURFACE; + } + else + { + setEGLError(EGL_BAD_ATTRIBUTE); + return EGL_NO_SURFACE; + } + } + hGLXPixmap = glXCreatePixmap(pDisplay, (GLXFBConfig)config, (Pixmap)hPixmap, NULL); + if (hGLXPixmap == None) + { + setEGLError(EGL_BAD_MATCH); + return EGL_NO_SURFACE; + } + EGL_ASSERT(hGLXPixmap < VBEGL_WINDOW_SURFACE); /* Greater than the maximum XID. */ + clearEGLError(); + return (EGLSurface)(hGLXPixmap | VBEGL_PIXMAP_SURFACE); +} + +DECLEXPORT(EGLBoolean) eglDestroySurface(EGLDisplay hDisplay, EGLSurface hSurface) +{ + Display *pDisplay = (Display *)hDisplay; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + switch ((GLXDrawable)hSurface & VBEGL_ANY_SURFACE) + { + case VBEGL_WINDOW_SURFACE: + glXDestroyWindow(pDisplay, (GLXWindow)hSurface & ~VBEGL_WINDOW_SURFACE); + return clearEGLError(); + case VBEGL_PBUFFER_SURFACE: + glXDestroyPbuffer(pDisplay, (GLXPbuffer)hSurface & ~VBEGL_PBUFFER_SURFACE); + return clearEGLError(); + case VBEGL_PIXMAP_SURFACE: + glXDestroyPixmap(pDisplay, (GLXPixmap)hSurface & ~VBEGL_PIXMAP_SURFACE); + return clearEGLError(); + default: + return setEGLError(EGL_BAD_SURFACE); + } +} + +DECLEXPORT(EGLBoolean) eglSurfaceAttrib(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cAttribute, EGLint cValue) +{ + NOREF(hDisplay); + NOREF(hSurface); + NOREF(cValue); + switch (cAttribute) + { + case EGL_MIPMAP_LEVEL: + case EGL_MULTISAMPLE_RESOLVE: + case EGL_SWAP_BEHAVIOR: + return setEGLError(EGL_BAD_MATCH); + default: + return setEGLError(EGL_BAD_ATTRIBUTE); + } +} + +DECLEXPORT(EGLBoolean) eglQuerySurface(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cAttribute, EGLint *cValue) +{ + NOREF(hDisplay); + NOREF(hSurface); + NOREF(cAttribute); + NOREF(cValue); + return setEGLError(EGL_BAD_MATCH); +} + +DECLEXPORT(EGLBoolean) eglBindTexImage(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cBuffer) +{ + NOREF(hDisplay); + NOREF(hSurface); + NOREF(cBuffer); + return setEGLError(EGL_BAD_MATCH); +} + +DECLEXPORT(EGLBoolean) eglReleaseTexImage(EGLDisplay hDisplay, EGLSurface hSurface, EGLint cBuffer) +{ + NOREF(hDisplay); + NOREF(hSurface); + NOREF(cBuffer); + return setEGLError(EGL_BAD_MATCH); +} + +DECLEXPORT(EGLBoolean) eglBindAPI(EGLenum enmApi) +{ + return enmApi == EGL_OPENGL_API ? clearEGLError() : setEGLError(EGL_BAD_PARAMETER); +} + +DECLEXPORT(EGLenum) eglQueryAPI(void) +{ + return EGL_OPENGL_API; +} + +DECLEXPORT(EGLContext) eglCreateContext(EGLDisplay hDisplay, EGLConfig hConfig, EGLContext hSharedContext, + const EGLint *paAttribs) +{ + Display *pDisplay = (Display *)hDisplay; + GLXContext hNewContext; + + if (!VALID_PTR(hDisplay)) + { + setEGLError(EGL_NOT_INITIALIZED); + return EGL_NO_CONTEXT; + } + if (paAttribs != NULL && *paAttribs != EGL_NONE) + { + setEGLError(EGL_BAD_ATTRIBUTE); + return EGL_NO_CONTEXT; + } + hNewContext = glXCreateNewContext(pDisplay, (GLXFBConfig)hConfig, GLX_RGBA_TYPE, (GLXContext)hSharedContext, true); + if (hNewContext) + { + clearEGLError(); + return (EGLContext)hNewContext; + } + setEGLError(EGL_BAD_MATCH); + return EGL_NO_CONTEXT; +} + +DECLEXPORT(EGLBoolean) eglDestroyContext(EGLDisplay hDisplay, EGLContext hContext) +{ + Display *pDisplay = (Display *)hDisplay; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + glXDestroyContext(pDisplay, (GLXContext) hContext); + return clearEGLError(); +} + +DECLEXPORT(EGLBoolean) eglMakeCurrent(EGLDisplay hDisplay, EGLSurface hDraw, EGLSurface hRead, EGLContext hContext) +{ + Display *pDisplay = (Display *)hDisplay; + GLXDrawable hGLXDraw = hDraw == EGL_NO_SURFACE ? None : (GLXDrawable)hDraw & ~VBEGL_ANY_SURFACE; + GLXDrawable hGLXRead = hRead == EGL_NO_SURFACE ? None : (GLXDrawable)hRead & ~VBEGL_ANY_SURFACE; + GLXContext hGLXContext = hContext == EGL_NO_CONTEXT ? None : (GLXContext)hContext; + struct VBEGLTLS *pTls = getTls(); + + if (!VALID_PTR(hDisplay) || !VALID_PTR(pTls)) + return setEGLError(EGL_NOT_INITIALIZED); + if (glXMakeContextCurrent(pDisplay, hGLXDraw, hGLXRead, hGLXContext)) + { + pTls->hCurrent = hContext; + pTls->hCurrentDraw = hDraw; + pTls->hCurrentRead = hRead; + return clearEGLError(); + } + else + return setEGLError(EGL_BAD_MATCH); +} + +DECLEXPORT(EGLContext) eglGetCurrentContext(void) +{ + struct VBEGLTLS *pTls = getTls(); + + if (!VALID_PTR(pTls)) + return EGL_NO_CONTEXT; + clearEGLError(); + return pTls->hCurrent; +} + +DECLEXPORT(EGLSurface) eglGetCurrentSurface(EGLint cOp) +{ + struct VBEGLTLS *pTls = getTls(); + + if (!VALID_PTR(pTls)) + return EGL_NO_SURFACE; + clearEGLError(); + switch (cOp) + { + case EGL_DRAW: + return pTls->hCurrentDraw; + case EGL_READ: + return pTls->hCurrentRead; + default: + setEGLError(EGL_BAD_PARAMETER); + return EGL_NO_SURFACE; + } +} + +DECLEXPORT(EGLDisplay) eglGetCurrentDisplay(void) +{ + struct VBEGLTLS *pTls; + + pTls = getTls(); + if (!VALID_PTR(pTls)) + return EGL_NO_DISPLAY; + clearEGLError(); + return pTls->hCurrentDisplay; +} + +DECLEXPORT(EGLBoolean) eglQueryContext(EGLDisplay hDisplay, EGLContext hContext, EGLint cAttribute, EGLint *pcValue) +{ + Display *pDisplay = (Display *)hDisplay; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + if (!VALID_PTR(pcValue)) + return setEGLError(EGL_BAD_PARAMETER); + switch (cAttribute) + { + case EGL_CONFIG_ID: + { + int cValue = 0; + + if (glXQueryContext(pDisplay, (GLXContext)hContext, GLX_FBCONFIG_ID, &cValue) == Success) + { + *pcValue = cValue; + return clearEGLError(); + } + return setEGLError(EGL_BAD_MATCH); + } + case EGL_CONTEXT_CLIENT_TYPE: + *pcValue = EGL_OPENGL_API; + return clearEGLError(); + case EGL_CONTEXT_CLIENT_VERSION: + *pcValue = 0; + return clearEGLError(); + case EGL_RENDER_BUFFER: + *pcValue = EGL_BACK_BUFFER; + return clearEGLError(); + default: + return setEGLError(EGL_BAD_ATTRIBUTE); + } +} + +DECLEXPORT(EGLBoolean) eglWaitClient(void) +{ + glXWaitGL(); + return clearEGLError(); +} + +DECLEXPORT(EGLBoolean) eglWaitGL(void) +{ + return setEGLError(EGL_BAD_PARAMETER); /* OpenGL ES only. */ +} + +DECLEXPORT(EGLBoolean) eglWaitNative(EGLint cEngine) +{ + if (cEngine != EGL_CORE_NATIVE_ENGINE) + return setEGLError(EGL_BAD_PARAMETER); + glXWaitX(); + return clearEGLError(); +} + +DECLEXPORT(EGLBoolean) eglSwapBuffers(EGLDisplay hDisplay, EGLSurface hSurface) +{ + Display *pDisplay = (Display *)hDisplay; + + if (!VALID_PTR(hDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + glXSwapBuffers(pDisplay, (GLXDrawable)hSurface & ~VBEGL_ANY_SURFACE); + return clearEGLError(); +} + +/** @todo Work out how this fits over what Chromium has to offer. */ +DECLEXPORT(EGLBoolean) eglCopyBuffers(EGLDisplay hDisplay, EGLSurface hSurface, EGLNativePixmapType hPixmap) +{ + Display *pDisplay = (Display *)hDisplay; + + if (!VALID_PTR(pDisplay)) + return setEGLError(EGL_NOT_INITIALIZED); + + NOREF(hSurface); + NOREF(hPixmap); + return setEGLError(EGL_BAD_MATCH); +} + +DECLEXPORT(EGLBoolean) eglSwapInterval (EGLDisplay dpy, EGLint interval) +{ + NOREF(dpy); + NOREF(interval); + return EGL_TRUE; +} + +typedef void (*VBEGLFuncPtr)(void); +DECLEXPORT(VBEGLFuncPtr)eglGetProcAddress(const char *pszName) +{ + clearEGLError(); + return glXGetProcAddress((const GLubyte *)pszName); +} + +DECLEXPORT(EGLBoolean) eglReleaseThread() +{ + struct VBEGLTLS *pTls = getTls(); + + if (!(pTls)) + return EGL_TRUE; + free(pTls); + /* Can this fail with ENOMEM? */ + pthread_setspecific(g_tls, NULL); + return EGL_TRUE; +} |