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libEGL.cpp
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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// 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.
// libEGL.cpp: Implements the exported EGL functions.
#include "main.h"
#include "Display.h"
#include "Surface.hpp"
#include "Texture.hpp"
#include "Context.hpp"
#include "common/Image.hpp"
#include "common/debug.h"
#include "Common/Version.h"
#if defined(__ANDROID__)
#include <system/window.h>
#elif defined(USE_X11)
#include "Main/libX11.hpp"
#endif
#include <algorithm>
#include <vector>
#include <string.h>
namespace egl
{
namespace
{
bool validateDisplay(egl::Display *display)
{
if(display == EGL_NO_DISPLAY)
{
return error(EGL_BAD_DISPLAY, false);
}
if(!display->isInitialized())
{
return error(EGL_NOT_INITIALIZED, false);
}
return true;
}
bool validateConfig(egl::Display *display, EGLConfig config)
{
if(!validateDisplay(display))
{
return false;
}
if(!display->isValidConfig(config))
{
return error(EGL_BAD_CONFIG, false);
}
return true;
}
bool validateContext(egl::Display *display, egl::Context *context)
{
if(!validateDisplay(display))
{
return false;
}
if(!display->isValidContext(context))
{
return error(EGL_BAD_CONTEXT, false);
}
return true;
}
bool validateSurface(egl::Display *display, egl::Surface *surface)
{
if(!validateDisplay(display))
{
return false;
}
if(!display->isValidSurface(surface))
{
return error(EGL_BAD_SURFACE, false);
}
return true;
}
// Class to facilitate conversion from EGLint to EGLAttrib lists.
class EGLAttribs
{
public:
explicit EGLAttribs(const EGLint *attrib_list)
{
if(attrib_list)
{
while(*attrib_list != EGL_NONE)
{
attrib.push_back(static_cast<EGLAttrib>(*attrib_list));
attrib_list++;
}
}
attrib.push_back(EGL_NONE);
}
const EGLAttrib *operator&() const
{
return &attrib[0];
}
private:
std::vector<EGLAttrib> attrib;
};
}
EGLint GetError(void)
{
TRACE("()");
EGLint error = egl::getCurrentError();
if(error != EGL_SUCCESS)
{
egl::setCurrentError(EGL_SUCCESS);
}
return error;
}
EGLDisplay GetDisplay(EGLNativeDisplayType display_id)
{
TRACE("(EGLNativeDisplayType display_id = %p)", display_id);
if(display_id != EGL_DEFAULT_DISPLAY)
{
// FIXME: Check if display_id is the default display
}
#if defined(__linux__) && !defined(__ANDROID__)
#if defined(USE_X11)
if(!libX11)
#endif // Non X11 linux is headless only
{
return success(HEADLESS_DISPLAY);
}
#endif
return success(PRIMARY_DISPLAY); // We only support the default display
}
EGLBoolean Initialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
{
TRACE("(EGLDisplay dpy = %p, EGLint *major = %p, EGLint *minor = %p)",
dpy, major, minor);
egl::Display *display = egl::Display::get(dpy);
if(!display)
{
return error(EGL_BAD_DISPLAY, EGL_FALSE);
}
if(!display->initialize())
{
return error(EGL_NOT_INITIALIZED, EGL_FALSE);
}
if(major) *major = 1;
if(minor) *minor = 4;
return success(EGL_TRUE);
}
EGLBoolean Terminate(EGLDisplay dpy)
{
TRACE("(EGLDisplay dpy = %p)", dpy);
if(dpy == EGL_NO_DISPLAY)
{
return error(EGL_BAD_DISPLAY, EGL_FALSE);
}
egl::Display *display = egl::Display::get(dpy);
display->terminate();
return success(EGL_TRUE);
}
const char *QueryString(EGLDisplay dpy, EGLint name)
{
TRACE("(EGLDisplay dpy = %p, EGLint name = %d)", dpy, name);
if(dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
{
return success(
"EGL_KHR_client_get_all_proc_addresses "
#if defined(__linux__) && !defined(__ANDROID__)
"EGL_KHR_platform_gbm "
#endif
#if defined(USE_X11)
"EGL_KHR_platform_x11 "
#endif
"EGL_EXT_client_extensions "
"EGL_EXT_platform_base");
}
egl::Display *display = egl::Display::get(dpy);
if(!validateDisplay(display))
{
return nullptr;
}
switch(name)
{
case EGL_CLIENT_APIS:
return success("OpenGL_ES");
case EGL_EXTENSIONS:
return success("EGL_KHR_create_context "
"EGL_KHR_get_all_proc_addresses "
"EGL_KHR_gl_texture_2D_image "
"EGL_KHR_gl_texture_cubemap_image "
"EGL_KHR_gl_renderbuffer_image "
"EGL_KHR_fence_sync "
"EGL_KHR_image_base "
"EGL_KHR_surfaceless_context "
"EGL_ANGLE_iosurface_client_buffer "
"EGL_ANDROID_framebuffer_target "
"EGL_ANDROID_recordable");
case EGL_VENDOR:
return success("Google Inc.");
case EGL_VERSION:
return success("1.4 SwiftShader " VERSION_STRING);
}
return error(EGL_BAD_PARAMETER, (const char*)nullptr);
}
EGLBoolean GetConfigs(EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig *configs = %p, "
"EGLint config_size = %d, EGLint *num_config = %p)",
dpy, configs, config_size, num_config);
egl::Display *display = egl::Display::get(dpy);
if(!validateDisplay(display))
{
return EGL_FALSE;
}
if(!num_config)
{
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
const EGLint attribList[] = {EGL_NONE};
if(!display->getConfigs(configs, attribList, config_size, num_config))
{
return error(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
return success(EGL_TRUE);
}
EGLBoolean ChooseConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config)
{
TRACE("(EGLDisplay dpy = %p, const EGLint *attrib_list = %p, "
"EGLConfig *configs = %p, EGLint config_size = %d, EGLint *num_config = %p)",
dpy, attrib_list, configs, config_size, num_config);
egl::Display *display = egl::Display::get(dpy);
if(!validateDisplay(display))
{
return EGL_FALSE;
}
if(!num_config)
{
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
const EGLint attribList[] = {EGL_NONE};
if(!attrib_list)
{
attrib_list = attribList;
}
if(!display->getConfigs(configs, attrib_list, config_size, num_config))
{
return error(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
return success(EGL_TRUE);
}
EGLBoolean GetConfigAttrib(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, EGLint attribute = %d, EGLint *value = %p)",
dpy, config, attribute, value);
egl::Display *display = egl::Display::get(dpy);
if(!validateConfig(display, config))
{
return EGL_FALSE;
}
if(!display->getConfigAttrib(config, attribute, value))
{
return error(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
return success(EGL_TRUE);
}
EGLSurface CreatePlatformWindowSurface(EGLDisplay dpy, EGLConfig config, void *native_window, const EGLAttrib *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, void *native_window = %p, "
"const EGLint *attrib_list = %p)", dpy, config, native_window, attrib_list);
egl::Display *display = egl::Display::get(dpy);
if(!validateConfig(display, config))
{
return EGL_NO_SURFACE;
}
if(!display->isValidWindow((EGLNativeWindowType)native_window))
{
return error(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
}
return display->createWindowSurface((EGLNativeWindowType)native_window, config, attrib_list);
}
EGLSurface CreatePlatformWindowSurfaceEXT(EGLDisplay dpy, EGLConfig config, void *native_window, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, void *native_window = %p, "
"const EGLint *attrib_list = %p)", dpy, config, native_window, attrib_list);
EGLAttribs attribs(attrib_list);
return CreatePlatformWindowSurface(dpy, config, native_window, &attribs);
}
EGLSurface CreateWindowSurface(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType window, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, EGLNativeWindowType window = %p, "
"const EGLint *attrib_list = %p)", dpy, config, window, attrib_list);
EGLAttribs attribs(attrib_list);
return CreatePlatformWindowSurface(dpy, config, (void*)window, &attribs);
}
EGLSurface CreatePbufferSurface(EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, const EGLint *attrib_list = %p)",
dpy, config, attrib_list);
egl::Display *display = egl::Display::get(dpy);
if(!validateConfig(display, config))
{
return EGL_NO_SURFACE;
}
return display->createPBufferSurface(config, attrib_list);
}
EGLSurface CreatePlatformPixmapSurface(EGLDisplay dpy, EGLConfig config, void *native_pixmap, const EGLAttrib *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, void *native_pixmap = %p, "
"const EGLint *attrib_list = %p)", dpy, config, native_pixmap, attrib_list);
egl::Display *display = egl::Display::get(dpy);
if(!validateConfig(display, config))
{
return EGL_NO_SURFACE;
}
UNIMPLEMENTED(); // FIXME
return success(EGL_NO_SURFACE);
}
EGLSurface CreatePlatformPixmapSurfaceEXT(EGLDisplay dpy, EGLConfig config, void *native_pixmap, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, void *native_pixmap = %p, "
"const EGLint *attrib_list = %p)", dpy, config, native_pixmap, attrib_list);
EGLAttribs attribs(attrib_list);
return CreatePlatformPixmapSurface(dpy, config, native_pixmap, &attribs);
}
EGLSurface CreatePixmapSurface(EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, EGLNativePixmapType pixmap = %p, "
"const EGLint *attrib_list = %p)", dpy, config, pixmap, attrib_list);
EGLAttribs attribs(attrib_list);
return CreatePlatformPixmapSurface(dpy, config, (void*)pixmap, &attribs);
}
EGLBoolean DestroySurface(EGLDisplay dpy, EGLSurface surface)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface surface = %p)", dpy, surface);
egl::Display *display = egl::Display::get(dpy);
egl::Surface *eglSurface = static_cast<egl::Surface*>(surface);
if(!validateSurface(display, eglSurface))
{
return EGL_FALSE;
}
if(surface == EGL_NO_SURFACE)
{
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
display->destroySurface((egl::Surface*)surface);
return success(EGL_TRUE);
}
EGLBoolean QuerySurface(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface surface = %p, EGLint attribute = %d, EGLint *value = %p)",
dpy, surface, attribute, value);
egl::Display *display = egl::Display::get(dpy);
egl::Surface *eglSurface = (egl::Surface*)surface;
if(!validateSurface(display, eglSurface))
{
return EGL_FALSE;
}
if(surface == EGL_NO_SURFACE)
{
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
switch(attribute)
{
case EGL_VG_ALPHA_FORMAT:
*value = EGL_VG_ALPHA_FORMAT_NONPRE; // Default
break;
case EGL_VG_COLORSPACE:
*value = EGL_VG_COLORSPACE_sRGB; // Default
break;
case EGL_CONFIG_ID:
*value = eglSurface->getConfigID();
break;
case EGL_HEIGHT:
*value = eglSurface->getHeight();
break;
case EGL_HORIZONTAL_RESOLUTION:
*value = EGL_UNKNOWN;
break;
case EGL_LARGEST_PBUFFER:
if(eglSurface->isPBufferSurface()) // For a window or pixmap surface, the contents of *value are not modified.
{
*value = eglSurface->getLargestPBuffer();
}
break;
case EGL_MIPMAP_TEXTURE:
if(eglSurface->isPBufferSurface()) // For a window or pixmap surface, the contents of *value are not modified.
{
*value = EGL_FALSE; // UNIMPLEMENTED
}
break;
case EGL_MIPMAP_LEVEL:
if(eglSurface->isPBufferSurface()) // For a window or pixmap surface, the contents of *value are not modified.
{
*value = eglSurface->getMipmapLevel();
}
break;
case EGL_MULTISAMPLE_RESOLVE:
*value = eglSurface->getMultisampleResolve();
break;
case EGL_PIXEL_ASPECT_RATIO:
*value = eglSurface->getPixelAspectRatio();
break;
case EGL_RENDER_BUFFER:
*value = eglSurface->getRenderBuffer();
break;
case EGL_SWAP_BEHAVIOR:
*value = eglSurface->getSwapBehavior();
break;
case EGL_TEXTURE_FORMAT:
if(eglSurface->isPBufferSurface()) // For a window or pixmap surface, the contents of *value are not modified.
{
*value = eglSurface->getTextureFormat();
}
break;
case EGL_TEXTURE_TARGET:
if(eglSurface->isPBufferSurface()) // For a window or pixmap surface, the contents of *value are not modified.
{
*value = eglSurface->getTextureTarget();
}
break;
case EGL_VERTICAL_RESOLUTION:
*value = EGL_UNKNOWN;
break;
case EGL_WIDTH:
*value = eglSurface->getWidth();
break;
default:
return error(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
return success(EGL_TRUE);
}
EGLBoolean BindAPI(EGLenum api)
{
TRACE("(EGLenum api = 0x%X)", api);
switch(api)
{
case EGL_OPENGL_API:
case EGL_OPENVG_API:
return error(EGL_BAD_PARAMETER, EGL_FALSE); // Not supported by this implementation
case EGL_OPENGL_ES_API:
break;
default:
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
egl::setCurrentAPI(api);
return success(EGL_TRUE);
}
EGLenum QueryAPI(void)
{
TRACE("()");
EGLenum API = egl::getCurrentAPI();
return success(API);
}
EGLBoolean WaitClient(void)
{
TRACE("()");
// eglWaitClient is ignored if there is no current EGL rendering context for the current rendering API.
egl::Context *context = egl::getCurrentContext();
if(context)
{
context->finish();
}
return success(EGL_TRUE);
}
EGLBoolean ReleaseThread(void)
{
TRACE("()");
detachThread();
return EGL_TRUE; // success() is not called here because it would re-allocate thread-local storage.
}
EGLSurface CreatePbufferFromClientBuffer(EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, EGLConfig config, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLenum buftype = 0x%X, EGLClientBuffer buffer = %p, "
"EGLConfig config = %p, const EGLint *attrib_list = %p)",
dpy, buftype, buffer, config, attrib_list);
switch(buftype)
{
case EGL_IOSURFACE_ANGLE:
{
egl::Display *display = egl::Display::get(dpy);
if(!validateConfig(display, config))
{
return EGL_NO_SURFACE;
}
return display->createPBufferSurface(config, attrib_list, buffer);
}
case EGL_OPENVG_IMAGE:
UNIMPLEMENTED();
return error(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
default:
return error(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
};
}
EGLBoolean SurfaceAttrib(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface surface = %p, EGLint attribute = %d, EGLint value = %d)",
dpy, surface, attribute, value);
egl::Display *display = egl::Display::get(dpy);
egl::Surface *eglSurface = static_cast<egl::Surface*>(surface);
if(!validateSurface(display, eglSurface))
{
return EGL_FALSE;
}
switch(attribute)
{
case EGL_MIPMAP_LEVEL:
eglSurface->setMipmapLevel(value);
break;
case EGL_MULTISAMPLE_RESOLVE:
switch(value)
{
case EGL_MULTISAMPLE_RESOLVE_DEFAULT:
break;
case EGL_MULTISAMPLE_RESOLVE_BOX:
if(!(eglSurface->getSurfaceType() & EGL_MULTISAMPLE_RESOLVE_BOX_BIT))
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
break;
default:
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
eglSurface->setMultisampleResolve(value);
break;
case EGL_SWAP_BEHAVIOR:
switch(value)
{
case EGL_BUFFER_DESTROYED:
break;
case EGL_BUFFER_PRESERVED:
if(!(eglSurface->getSurfaceType() & EGL_SWAP_BEHAVIOR_PRESERVED_BIT))
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
break;
default:
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
eglSurface->setSwapBehavior(value);
break;
default:
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
return success(EGL_TRUE);
}
EGLBoolean BindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface surface = %p, EGLint buffer = %d)", dpy, surface, buffer);
egl::Display *display = egl::Display::get(dpy);
egl::Surface *eglSurface = static_cast<egl::Surface*>(surface);
if(!validateSurface(display, eglSurface))
{
return EGL_FALSE;
}
if(buffer != EGL_BACK_BUFFER)
{
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
if(surface == EGL_NO_SURFACE || eglSurface->isWindowSurface())
{
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
if(eglSurface->getBoundTexture())
{
return error(EGL_BAD_ACCESS, EGL_FALSE);
}
if(eglSurface->getTextureFormat() == EGL_NO_TEXTURE)
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
egl::Context *context = egl::getCurrentContext();
if(context)
{
context->bindTexImage(eglSurface);
}
return success(EGL_TRUE);
}
EGLBoolean ReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface surface = %p, EGLint buffer = %d)", dpy, surface, buffer);
egl::Display *display = egl::Display::get(dpy);
egl::Surface *eglSurface = static_cast<egl::Surface*>(surface);
if(!validateSurface(display, eglSurface))
{
return EGL_FALSE;
}
if(buffer != EGL_BACK_BUFFER)
{
return error(EGL_BAD_PARAMETER, EGL_FALSE);
}
if(surface == EGL_NO_SURFACE || eglSurface->isWindowSurface())
{
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
if(eglSurface->getTextureFormat() == EGL_NO_TEXTURE)
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
egl::Texture *texture = eglSurface->getBoundTexture();
if(texture)
{
texture->releaseTexImage();
}
return success(EGL_TRUE);
}
EGLBoolean SwapInterval(EGLDisplay dpy, EGLint interval)
{
TRACE("(EGLDisplay dpy = %p, EGLint interval = %d)", dpy, interval);
egl::Display *display = egl::Display::get(dpy);
egl::Context *context = egl::getCurrentContext();
if(!validateContext(display, context))
{
return EGL_FALSE;
}
egl::Surface *draw_surface = static_cast<egl::Surface*>(egl::getCurrentDrawSurface());
if(!draw_surface)
{
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
draw_surface->setSwapInterval(interval);
return success(EGL_TRUE);
}
EGLContext CreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list)
{
TRACE("(EGLDisplay dpy = %p, EGLConfig config = %p, EGLContext share_context = %p, "
"const EGLint *attrib_list = %p)", dpy, config, share_context, attrib_list);
EGLint majorVersion = 1;
EGLint minorVersion = 0;
if(attrib_list)
{
for(const EGLint* attribute = attrib_list; attribute[0] != EGL_NONE; attribute += 2)
{
switch(attribute[0])
{
case EGL_CONTEXT_MAJOR_VERSION_KHR: // This token is an alias for EGL_CONTEXT_CLIENT_VERSION
majorVersion = attribute[1];
break;
case EGL_CONTEXT_MINOR_VERSION_KHR:
minorVersion = attribute[1];
break;
case EGL_CONTEXT_FLAGS_KHR:
switch(attribute[1])
{
case EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR:
// According to the EGL_KHR_create_context spec:
// "Khronos is still defining the expected and required features of debug contexts, so
// implementations are currently free to implement "debug contexts" with little or no debug
// functionality. However, OpenGL and OpenGL ES implementations supporting the GL_KHR_debug
// extension should enable it when this bit is set."
break;
case EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR:
case EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR:
// These bits are for OpenGL contexts only, not OpenGL ES contexts
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
default:
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
}
break;
case EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR:
switch(attribute[1])
{
case EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR:
case EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR:
// These bits are for OpenGL contexts only, not OpenGL ES contexts
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
default:
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
}
break;
case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR:
switch(attribute[1])
{
case EGL_NO_RESET_NOTIFICATION_KHR:
case EGL_LOSE_CONTEXT_ON_RESET_KHR:
// These bits are for OpenGL contexts only, not OpenGL ES contexts
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
default:
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
}
break;
default:
return error(EGL_BAD_ATTRIBUTE, EGL_NO_CONTEXT);
}
}
}
switch(majorVersion)
{
case 1:
if(minorVersion != 0 && minorVersion != 1)
{
// 1.X: Only OpenGL ES 1.0 and 1.1 contexts are supported
return error(EGL_BAD_MATCH, EGL_NO_CONTEXT);
}
break;
case 2:
case 3:
if(minorVersion != 0)
{
// 2.X and 3.X: Only OpenGL ES 2.0 and 3.0 contexts are currently supported
return error(EGL_BAD_MATCH, EGL_NO_CONTEXT);
}
break;
default:
return error(EGL_BAD_MATCH, EGL_NO_CONTEXT);
}
egl::Display *display = egl::Display::get(dpy);
egl::Context *shareContext = static_cast<egl::Context*>(share_context);
if(!validateConfig(display, config))
{
return EGL_NO_CONTEXT;
}
// Allow sharing between different context versions >= 2.0, but isolate 1.x
// contexts from 2.0+. Strict matching between context versions >= 2.0 is
// confusing for apps to navigate because of version promotion.
if(shareContext && ((shareContext->getClientVersion() >= 2) ^ (majorVersion >= 2)))
{
return error(EGL_BAD_CONTEXT, EGL_NO_CONTEXT);
}
return display->createContext(config, shareContext, majorVersion);
}
EGLBoolean DestroyContext(EGLDisplay dpy, EGLContext ctx)
{
TRACE("(EGLDisplay dpy = %p, EGLContext ctx = %p)", dpy, ctx);
egl::Display *display = egl::Display::get(dpy);
egl::Context *context = static_cast<egl::Context*>(ctx);
if(!validateContext(display, context))
{
return EGL_FALSE;
}
if(ctx == EGL_NO_CONTEXT)
{
return error(EGL_BAD_CONTEXT, EGL_FALSE);
}
display->destroyContext(context);
return success(EGL_TRUE);
}
EGLBoolean MakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx)
{
TRACE("(EGLDisplay dpy = %p, EGLSurface draw = %p, EGLSurface read = %p, EGLContext ctx = %p)",
dpy, draw, read, ctx);
egl::Display *display = egl::Display::get(dpy);
egl::Context *context = static_cast<egl::Context*>(ctx);
egl::Surface *drawSurface = static_cast<egl::Surface*>(draw);
egl::Surface *readSurface = static_cast<egl::Surface*>(read);
if(ctx != EGL_NO_CONTEXT || draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE)
{
if(!validateDisplay(display))
{
return EGL_FALSE;
}
}
if(ctx == EGL_NO_CONTEXT && (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE))
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
if(ctx != EGL_NO_CONTEXT && !validateContext(display, context))
{
return EGL_FALSE;
}
if((draw != EGL_NO_SURFACE && !validateSurface(display, drawSurface)) ||
(read != EGL_NO_SURFACE && !validateSurface(display, readSurface)))
{
return EGL_FALSE;
}
if((draw != EGL_NO_SURFACE && drawSurface->hasClientBuffer()) ||
(read != EGL_NO_SURFACE && readSurface->hasClientBuffer()))
{
// Make current is not supported on IOSurface pbuffers.
return error(EGL_BAD_SURFACE, EGL_FALSE);
}
if((draw != EGL_NO_SURFACE) ^ (read != EGL_NO_SURFACE))
{
return error(EGL_BAD_MATCH, EGL_FALSE);
}
if(draw != read)
{
UNIMPLEMENTED(); // FIXME
}
egl::setCurrentDrawSurface(drawSurface);
egl::setCurrentReadSurface(readSurface);
egl::setCurrentContext(context);
if(context)
{
context->makeCurrent(drawSurface);
}
return success(EGL_TRUE);
}
EGLContext GetCurrentContext(void)
{
TRACE("()");
EGLContext context = egl::getCurrentContext();
return success(context);
}
EGLSurface GetCurrentSurface(EGLint readdraw)
{
TRACE("(EGLint readdraw = %d)", readdraw);
if(readdraw == EGL_READ)
{
EGLSurface read = egl::getCurrentReadSurface();
return success(read);
}
else if(readdraw == EGL_DRAW)
{
EGLSurface draw = egl::getCurrentDrawSurface();
return success(draw);
}
else
{
return error(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
}
}
EGLDisplay GetCurrentDisplay(void)
{
TRACE("()");
egl::Context *context = egl::getCurrentContext();
if(!context)
{