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Merge pull request #9 from Cloudef/EGL

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EGL work.
This commit is contained in:
Camilla Löwy Berglund 2012-07-19 07:49:07 -07:00
commit 11143baa95
10 changed files with 951 additions and 15 deletions
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15
CMake/modules/FindEGL.cmake Normal file
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@ -0,0 +1,15 @@
# Find EGL
#
# EGL_INCLUDE_DIR
# EGL_LIBRARY
# EGL_FOUND
FIND_PATH(EGL_INCLUDE_DIR NAMES EGL/egl.h)
SET(EGL_NAMES ${EGL_NAMES} egl EGL)
FIND_LIBRARY(EGL_LIBRARY NAMES ${EGL_NAMES})
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(EGL DEFAULT_MSG EGL_LIBRARY EGL_INCLUDE_DIR)
MARK_AS_ADVANCED(EGL_INCLUDE_DIR EGL_LIBRARY)

99
CMakeLists.txt
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@ -12,8 +12,14 @@ set(GLFW_VERSION_FULL "${GLFW_VERSION}.${GLFW_VERSION_PATCH}${GLFW_VERSION_EXTRA
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" ON)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" ON)
option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_USE_EGL "Build for EGL and OpenGL ES platform (Currently only X11)" OFF)
find_package(OpenGL REQUIRED)
if (GLFW_USE_EGL)
SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/CMake/modules)
find_package(EGL REQUIRED)
else()
find_package(OpenGL REQUIRED)
endif()
#--------------------------------------------------------------------
# Enable all warnings on GCC, regardless of OS
@ -39,8 +45,17 @@ elseif (UNIX AND APPLE)
set(_GLFW_COCOA_NSGL 1)
message(STATUS "Building GLFW for Cocoa and NSOpenGL on Mac OS X")
elseif (UNIX AND NOT APPLE)
set(_GLFW_X11_GLX 1)
message(STATUS "Building GLFW for X11 and GLX on a Unix-like system")
set(_GLFW_X11 1)
if (GLFW_USE_EGL)
set(_GLFW_X11_EGL 1)
set(GLFW_BUILD_EXAMPLES 0)
set(GLFW_BUILD_TESTS 0)
message(STATUS "Building GLFW for X11 and EGL on a Unix-like system")
message(STATUS "NOTE: Examples and tests are disabled for EGL")
else()
set(_GLFW_X11_GLX 1)
message(STATUS "Building GLFW for X11 and GLX on a Unix-like system")
endif()
else()
message(FATAL_ERROR "No supported platform was detected")
endif()
@ -62,20 +77,18 @@ if (_GLFW_WIN32_WGL)
endif()
#--------------------------------------------------------------------
# Set up GLFW for Xlib and GLX on Unix-like systems with X Windows
# Set up GLFW for Xlib and GLX or EGL on Unix-like systems with X Windows
#--------------------------------------------------------------------
if (_GLFW_X11_GLX)
if (_GLFW_X11)
find_package(X11 REQUIRED)
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS ${X11_X11_INCLUDE_PATH} ${OPENGL_INCLUDE_DIR})
list(APPEND glfw_LIBRARIES ${X11_X11_LIB} ${OPENGL_gl_LIBRARY})
set(GLFW_PKG_DEPS "gl x11")
set(GLFW_PKG_LIBS "")
set(GLFW_PKG_DEPS "x11")
include(CheckFunctionExists)
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS ${X11_X11_INCLUDE_PATH})
list(APPEND glfw_LIBRARIES ${X11_X11_LIB})
# Check for XRandR (modern resolution switching extension)
if (X11_Xrandr_FOUND)
@ -121,6 +134,25 @@ if (_GLFW_X11_GLX)
set(GLFW_PKG_LIBS "${GLFW_PKG_LIBS} -lm")
endif()
if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(_GLFW_USE_LINUX_JOYSTICKS 1)
endif()
endif()
#--------------------------------------------------------------------
# GLX Context
#--------------------------------------------------------------------
if (_GLFW_X11_GLX)
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS${OPENGL_INCLUDE_DIR})
list(APPEND glfw_LIBRARIES ${OPENGL_gl_LIBRARY})
set(GLFW_PKG_DEPS "${GLFW_PKG_DEPS} gl")
include(CheckFunctionExists)
set(CMAKE_REQUIRED_LIBRARIES ${OPENGL_gl_LIBRARY})
check_function_exists(glXGetProcAddress _GLFW_HAS_GLXGETPROCADDRESS)
@ -160,9 +192,50 @@ if (_GLFW_X11_GLX)
endif()
endif()
if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(_GLFW_USE_LINUX_JOYSTICKS 1)
endif()
#--------------------------------------------------------------------
# EGL Context
#--------------------------------------------------------------------
if (_GLFW_X11_EGL)
# Set up library and include paths
list(APPEND glfw_INCLUDE_DIRS${EGL_INCLUDE_DIR})
list(APPEND glfw_LIBRARIES ${EGL_LIBRARY})
set(GLFW_PKG_DEPS "${GLFW_PKG_DEPS} egl")
include(CheckFunctionExists)
set(CMAKE_REQUIRED_LIBRARIES ${EGL_LIBRARY})
check_function_exists(eglGetProcAddress _GLFW_HAS_EGLGETPROCADDRESS)
if (NOT _GLFW_HAS_EGLGETPROCADDRESS)
message(WARNING "No eglGetProcAddress found")
# Check for dlopen support as a fallback
find_library(DL_LIBRARY dl)
mark_as_advanced(DL_LIBRARY)
if (DL_LIBRARY)
set(CMAKE_REQUIRED_LIBRARIES ${DL_LIBRARY})
else()
set(CMAKE_REQUIRED_LIBRARIES "")
endif()
check_function_exists(dlopen _GLFW_HAS_DLOPEN)
if (NOT _GLFW_HAS_DLOPEN)
message(FATAL_ERROR "No entry point retrieval mechanism found")
endif()
if (DL_LIBRARY)
list(APPEND glfw_LIBRARIES ${DL_LIBRARY})
set(GLFW_PKG_LIBS "${GLFW_PKG_LIBS} -ldl")
endif()
endif()
endif()
#--------------------------------------------------------------------

5
src/CMakeLists.txt
View File

@ -25,6 +25,11 @@ elseif (_GLFW_X11_GLX)
set(glfw_SOURCES ${common_SOURCES} x11_clipboard.c x11_fullscreen.c
x11_gamma.c x11_init.c x11_input.c x11_joystick.c
x11_keysym2unicode.c x11_opengl.c x11_time.c x11_window.c)
elseif (_GLFW_X11_EGL)
set(glfw_HEADERS ${common_HEADERS} x11_egl_platform.h)
set(glfw_SOURCES ${common_SOURCES} x11_clipboard.c x11_fullscreen.c
x11_gamma.c x11_init.c x11_input.c x11_joystick.c
x11_keysym2unicode.c x11_egl_opengl.c x11_time.c x11_window.c)
endif()
add_library(glfw ${glfw_SOURCES} ${glfw_HEADERS})

5
src/config.h.in
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@ -37,6 +37,8 @@
// Define this to 1 if building GLFW for X11/GLX
#cmakedefine _GLFW_X11_GLX
// Define this to 1 if building GLFW for X11/EGL
#cmakedefine _GLFW_X11_EGL
// Define this to 1 if building GLFW for Win32/WGL
#cmakedefine _GLFW_WIN32_WGL
// Define this to 1 if building GLFW for Cocoa/NSOpenGL
@ -63,6 +65,9 @@
// Define this to 1 if glXGetProcAddressEXT is available
#cmakedefine _GLFW_HAS_GLXGETPROCADDRESSEXT
// Define this to 1 if eglGetProcAddress is available
#cmakedefine _GLFW_HAS_EGLGETPROCADDRESS 1
// Define this to 1 if the Linux joystick API is available
#cmakedefine _GLFW_USE_LINUX_JOYSTICKS

2
src/internal.h
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@ -82,6 +82,8 @@ typedef struct _GLFWlibrary _GLFWlibrary;
#include "win32_platform.h"
#elif defined(_GLFW_X11_GLX)
#include "x11_platform.h"
#elif defined(_GLFW_X11_EGL)
#include "x11_egl_platform.h"
#else
#error "No supported platform selected"
#endif

14
src/opengl.c
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@ -32,6 +32,7 @@
#include <string.h>
#include <limits.h>
#include <stdio.h>
//========================================================================
@ -42,13 +43,16 @@ static void parseGLVersion(int* major, int* minor, int* rev)
{
GLuint _major, _minor = 0, _rev = 0;
const GLubyte* version;
const GLubyte* ptr;
const char* glesPrefix = "OpenGL ES ";
version = glGetString(GL_VERSION);
if (!version)
return;
#if 0
// Old version detection code. This doesn't work very well
const GLubyte* ptr;
const char* glesPrefix = "OpenGL ES ";
if (strncmp((const char*) version, glesPrefix, strlen(glesPrefix)) == 0)
{
// The version string on OpenGL ES has a prefix before the version
@ -76,6 +80,12 @@ static void parseGLVersion(int* major, int* minor, int* rev)
_rev = 10 * _rev + (*ptr - '0');
}
}
#endif
// Find version from OpenGL string
for (; version &&
!sscanf((char*)version, "%d.%d.%d", &_major, &_minor, &_rev);
++version);
// Store result
*major = _major;

536
src/x11_egl_opengl.c Normal file
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@ -0,0 +1,536 @@
//========================================================================
// GLFW - An OpenGL library
// Platform: X11/EGL/GLES
// API version: 3.0
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
// Max number of EGL configuration we handle
#define _GLFW_EGL_CONFIG_IN 15
//========================================================================
// Returns the specified attribute of the specified EGLConfig
//========================================================================
static int getFBConfigAttrib(EGLConfig fbconfig, int attrib)
{
int value;
eglGetConfigAttrib(_glfwLibrary.EGL.display, fbconfig, attrib, &value);
return value;
}
//========================================================================
// Return a list of available and usable framebuffer configs
//========================================================================
static _GLFWfbconfig* getFBConfigs(_GLFWwindow* window, const _GLFWwndconfig* wndconfig, unsigned int* found)
{
EGLConfig fbconfigs[_GLFW_EGL_CONFIG_IN];
_GLFWfbconfig* result;
int i, count = 0;
*found = 0;
eglGetConfigs(_glfwLibrary.EGL.display, fbconfigs,
_GLFW_EGL_CONFIG_IN, &count);
if (!count)
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE,
"X11/EGL: No EGLConfigs returned");
return NULL;
}
result = (_GLFWfbconfig*) malloc(sizeof(_GLFWfbconfig) * count);
if (!result)
{
_glfwSetError(GLFW_OUT_OF_MEMORY,
"X11/EGL: Failed to allocate _GLFWfbconfig array");
return NULL;
}
for (i = 0; i < count; i++)
{
if (!getFBConfigAttrib(fbconfigs[i], EGL_NATIVE_VISUAL_ID))
{
// Only consider EGLConfigs with associated visuals
continue;
}
if (!(getFBConfigAttrib(fbconfigs[i],
EGL_COLOR_BUFFER_TYPE) & EGL_RGB_BUFFER))
{
// Only consider RGB(A) EGLConfigs
continue;
}
if (!(getFBConfigAttrib(fbconfigs[i], EGL_SURFACE_TYPE) & EGL_WINDOW_BIT))
{
// Only consider window EGLConfigs
continue;
}
if (!(getFBConfigAttrib(fbconfigs[i], EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES_BIT) &&
!(getFBConfigAttrib(fbconfigs[i], EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES2_BIT))
{
// Only consider OpenGL ES context
continue;
}
if (wndconfig->glProfile == GLFW_OPENGL_ES2_PROFILE &&
!(getFBConfigAttrib(fbconfigs[i], EGL_RENDERABLE_TYPE) & EGL_OPENGL_ES2_BIT))
{
// User requested only OpenGL ES 2.0 context
continue;
}
result[*found].redBits = getFBConfigAttrib(fbconfigs[i], EGL_RED_SIZE);
result[*found].greenBits = getFBConfigAttrib(fbconfigs[i], EGL_GREEN_SIZE);
result[*found].blueBits = getFBConfigAttrib(fbconfigs[i], EGL_BLUE_SIZE);
result[*found].alphaBits = getFBConfigAttrib(fbconfigs[i], EGL_ALPHA_SIZE);
result[*found].depthBits = getFBConfigAttrib(fbconfigs[i], EGL_DEPTH_SIZE);
result[*found].stencilBits = getFBConfigAttrib(fbconfigs[i], EGL_STENCIL_SIZE);
result[*found].samples = getFBConfigAttrib(fbconfigs[i], EGL_SAMPLES);
result[*found].platformID = (GLFWintptr) getFBConfigAttrib(fbconfigs[i], EGL_CONFIG_ID);
(*found)++;
}
return result;
}
//========================================================================
// Read back framebuffer parameters from the context
//========================================================================
static void refreshContextParams(_GLFWwindow* window, EGLint fbconfigID)
{
EGLint dummy;
EGLConfig fbconfig[_GLFW_EGL_CONFIG_IN];
int attribs[] = { EGL_CONFIG_ID, fbconfigID, None };
eglChooseConfig(_glfwLibrary.EGL.display,
attribs,
fbconfig,
_GLFW_EGL_CONFIG_IN,
&dummy);
if (!dummy)
{
// This should never ever happen
// TODO: Flag this as an error and propagate up
_glfwSetError(GLFW_PLATFORM_ERROR, "X11/EGL: Cannot find known "
"EGLConfig by ID. This cannot "
"happen. Have a nice day.\n");
abort();
}
// There is no clear definition of an "accelerated" context on X11/EGL, and
// true sounds better than false, so we hardcode true here
window->accelerated = GL_TRUE;
window->redBits = getFBConfigAttrib(*fbconfig, EGL_RED_SIZE);
window->greenBits = getFBConfigAttrib(*fbconfig, EGL_GREEN_SIZE);
window->blueBits = getFBConfigAttrib(*fbconfig, EGL_BLUE_SIZE);
window->alphaBits = getFBConfigAttrib(*fbconfig, EGL_ALPHA_SIZE);
window->depthBits = getFBConfigAttrib(*fbconfig, EGL_DEPTH_SIZE);
window->stencilBits = getFBConfigAttrib(*fbconfig, EGL_STENCIL_SIZE);
// Get FSAA buffer sample count
window->samples = getFBConfigAttrib(*fbconfig, EGL_SAMPLES);
}
//========================================================================
// Create the actual OpenGL(|ES) context
//========================================================================
#define setEGLattrib(attribs, index, attribName, attribValue) \
attribs[index++] = attribName; \
attribs[index++] = attribValue;
static int createContext(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
EGLint fbconfigID)
{
int attribs[40], visMask;
EGLint dummy, index, vid = 0;
EGLint red_size, green_size, blue_size, alpha_size;
EGLConfig fbconfig[_GLFW_EGL_CONFIG_IN];
EGLContext share = NULL;
XVisualInfo visTemplate;
if (wndconfig->share)
share = wndconfig->share->EGL.context;
// Retrieve the previously selected EGLConfig
{
index = 0;
setEGLattrib(attribs, index, EGL_CONFIG_ID, fbconfigID);
setEGLattrib(attribs, index, EGL_NONE, EGL_NONE);
eglChooseConfig(_glfwLibrary.EGL.display,
attribs,
fbconfig,
_GLFW_EGL_CONFIG_IN,
&dummy);
if (!dummy)
{
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: Failed to retrieve the selected EGLConfig");
return GL_FALSE;
}
}
// Retrieve the corresponding visual
// NOTE: This is the only non-portable code in this file.
// Maybe it would not hurt too much to add #ifdefs for different platforms?
eglGetConfigAttrib(_glfwLibrary.EGL.display, *fbconfig, EGL_NATIVE_VISUAL_ID, &vid);
// Init visual template
visTemplate.screen = _glfwLibrary.X11.screen;
visMask = VisualScreenMask;
if (vid != 0)
{
// The X window visual must match the EGL config
visTemplate.visualid = vid;
visMask |= VisualIDMask;
}
else
{
// some EGL drivers don't implement the EGL_NATIVE_VISUAL_ID
// attribute, so attempt to find the closest match.
eglGetConfigAttrib(_glfwLibrary.EGL.display, *fbconfig,
EGL_RED_SIZE, &red_size);
eglGetConfigAttrib (_glfwLibrary.EGL.display, *fbconfig,
EGL_GREEN_SIZE, &green_size);
eglGetConfigAttrib (_glfwLibrary.EGL.display, *fbconfig,
EGL_BLUE_SIZE, &blue_size);
eglGetConfigAttrib (_glfwLibrary.EGL.display, *fbconfig,
EGL_ALPHA_SIZE, &alpha_size);
visTemplate.depth = red_size + green_size + blue_size + alpha_size;
visMask |= VisualDepthMask;
}
// Get X Visual
window->EGL.visual = XGetVisualInfo(_glfwLibrary.X11.display, visMask, &visTemplate, &dummy);
if (window->EGL.visual == NULL) {
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/GLX: Failed to retrieve visual for EGLConfig");
return GL_FALSE;
}
index = 0;
if (wndconfig->glProfile == GLFW_OPENGL_ES2_PROFILE)
{
setEGLattrib(attribs, index, EGL_CONTEXT_CLIENT_VERSION, 2);
}
else
{
setEGLattrib(attribs, index, EGL_CONTEXT_CLIENT_VERSION, 1);
}
setEGLattrib(attribs, index, EGL_NONE, EGL_NONE);
eglBindAPI(EGL_OPENGL_ES_API);
window->EGL.context = eglCreateContext(_glfwLibrary.EGL.display, *fbconfig, share, attribs);
if (window->EGL.context == EGL_NO_CONTEXT)
{
// TODO: Handle all the various error codes here
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: Failed to create OpenGL(|ES) context");
return GL_FALSE;
}
// store configuraion
window->EGL.config = *fbconfig;
refreshContextParams(window, fbconfigID);
return GL_TRUE;
}
#undef setEGLattrib
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// Initialize EGL
//========================================================================
int _glfwInitOpenGL(void)
{
#ifdef _GLFW_DLOPEN_LIBGL
int i;
char* libEGL_names[ ] =
{
"libEGL.so",
"libEGL.so.1",
"/usr/lib/libEGL.so",
"/usr/lib/libEGL.so.1",
NULL
};
for (i = 0; libEGL_names[i] != NULL; i++)
{
_glfwLibrary.EGL.libEGL = dlopen(libEGL_names[i], RTLD_LAZY | RTLD_GLOBAL);
if (_glfwLibrary.EGL.libEGL)
break;
}
if (!_glfwLibrary.EGL.libEGL)
{
_glfwSetError(GLFW_PLATFORM_ERROR, "X11/EGL: Failed to find libEGL");
return GL_FALSE;
}
#endif
_glfwLibrary.EGL.display = eglGetDisplay((EGLNativeDisplayType)_glfwLibrary.X11.display);
if (_glfwLibrary.EGL.display == EGL_NO_DISPLAY)
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE,
"X11/EGL: Failed to get EGL display");
return GL_FALSE;
}
if (!eglInitialize(_glfwLibrary.EGL.display,
&_glfwLibrary.EGL.majorVersion,
&_glfwLibrary.EGL.minorVersion))
{
_glfwSetError(GLFW_OPENGL_UNAVAILABLE,
"X11/EGL: Failed to initialize EGL");
return GL_FALSE;
}
return GL_TRUE;
}
//========================================================================
// Terminate EGL
//========================================================================
void _glfwTerminateOpenGL(void)
{
// Unload libEGL.so if necessary
#ifdef _GLFW_DLOPEN_LIBGL
if (_glfwLibrary.EGL.libEGL != NULL)
{
dlclose(_glfwLibrary.EGL.libEGL);
_glfwLibrary.EGL.libEGL = NULL;
}
#endif
eglTerminate(_glfwLibrary.EGL.display);
}
//========================================================================
// Prepare for creation of the OpenGL context
//========================================================================
int _glfwCreateContext(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig)
{
_GLFWfbconfig closest;
// Choose the best available fbconfig
{
unsigned int fbcount;
_GLFWfbconfig* fbconfigs;
const _GLFWfbconfig* result;
fbconfigs = getFBConfigs(window, wndconfig, &fbcount);
if (!fbconfigs)
{
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: No usable EGLFBConfigs found");
return GL_FALSE;
}
result = _glfwChooseFBConfig(fbconfig, fbconfigs, fbcount);
if (!result)
{
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: No EGLFBConfig matched the criteria");
free(fbconfigs);
return GL_FALSE;
}
closest = *result;
free(fbconfigs);
}
return createContext(window, wndconfig, closest.platformID);
}
//========================================================================
// Destroy the OpenGL context
//========================================================================
void _glfwDestroyContext(_GLFWwindow* window)
{
if (window->EGL.visual)
{
XFree(window->EGL.visual);
window->EGL.visual = NULL;
}
if (window->EGL.surface)
{
// Release and destroy the surface
eglDestroySurface(_glfwLibrary.EGL.display, window->EGL.surface);
window->EGL.surface = EGL_NO_SURFACE;
}
if (window->EGL.context)
{
// Release and destroy the context
eglDestroyContext(_glfwLibrary.EGL.display, window->EGL.context);
window->EGL.context = EGL_NO_CONTEXT;
}
}
//========================================================================
// Return the X visual associated with the specified context
//========================================================================
XVisualInfo* _glfwGetContextVisual(_GLFWwindow* window)
{
return window->EGL.visual;
}
//========================================================================
// Make the OpenGL context associated with the specified window current
//========================================================================
void _glfwPlatformMakeContextCurrent(_GLFWwindow* window)
{
if (window)
{
if (window->EGL.surface == EGL_NO_SURFACE)
{
window->EGL.surface = eglCreateWindowSurface(_glfwLibrary.EGL.display,
window->EGL.config, (EGLNativeWindowType)window->X11.handle, NULL);
if (window->EGL.surface == EGL_NO_SURFACE)
{
_glfwSetError(GLFW_PLATFORM_ERROR,
"X11/EGL: Failed to create window surface");
}
}
eglMakeCurrent(_glfwLibrary.EGL.display,
window->EGL.surface,
window->EGL.surface,
window->EGL.context);
}
else
eglMakeCurrent(_glfwLibrary.EGL.display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
}
//========================================================================
// Swap OpenGL buffers
//========================================================================
void _glfwPlatformSwapBuffers(void)
{
eglSwapBuffers(_glfwLibrary.EGL.display,
_glfwLibrary.currentWindow->EGL.surface);
}
//========================================================================
// Set double buffering swap interval
//========================================================================
void _glfwPlatformSwapInterval(int interval)
{
eglSwapInterval(_glfwLibrary.EGL.display, interval);
}
//========================================================================
// Check if an OpenGL extension is available at runtime
//========================================================================
int _glfwPlatformExtensionSupported(const char* extension)
{
const char* extensions;
// Get list of GLX extensions
extensions = eglQueryString(_glfwLibrary.EGL.display,
EGL_EXTENSIONS);
if (extensions != NULL)
{
if (_glfwStringInExtensionString(extension, (unsigned char*)extensions))
return GL_TRUE;
}
return GL_FALSE;
}
//========================================================================
// Get the function pointer to an OpenGL function
//========================================================================
GLFWglproc _glfwPlatformGetProcAddress(const char* procname)
{
return _glfw_eglGetProcAddress(procname);
}
//========================================================================
// Copies the specified OpenGL state categories from src to dst
//========================================================================
void _glfwPlatformCopyContext(_GLFWwindow* src, _GLFWwindow* dst, unsigned long mask)
{
// AFAIK, EGL doesn't have this
}

286
src/x11_egl_platform.h Normal file
View File

@ -0,0 +1,286 @@
//========================================================================
// GLFW - An OpenGL library
// Platform: X11/EGL
// API version: 3.0
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#ifndef _platform_h_
#define _platform_h_
#include <unistd.h>
#include <signal.h>
#include <stdint.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
// Include EGL
#include <EGL/egl.h>
// With XFree86, we can use the XF86VidMode extension
#if defined(_GLFW_HAS_XF86VIDMODE)
#include <X11/extensions/xf86vmode.h>
#endif
#if defined(_GLFW_HAS_XRANDR)
#include <X11/extensions/Xrandr.h>
#endif
// Do we have support for dlopen/dlsym?
#if defined(_GLFW_HAS_DLOPEN)
#include <dlfcn.h>
#endif
// The Xkb extension provides improved keyboard support
#if defined(_GLFW_HAS_XKB)
#include <X11/XKBlib.h>
#endif
// We support two different ways for getting addresses for EGL
// extension functions: eglGetProcAddress and dlsym
#if defined(_GLFW_HAS_EGLGETPROCADDRESS)
#define _glfw_eglGetProcAddress(x) eglGetProcAddress(x)
#elif defined(_GLFW_HAS_DLOPEN)
#define _glfw_eglGetProcAddress(x) dlsym(_glfwLibrary.EGL.libEGL, x)
#define _GLFW_DLOPEN_LIBEGL
#else
#error "No OpenGL entry point retrieval mechanism was enabled"
#endif
#define _GLFW_PLATFORM_WINDOW_STATE _GLFWwindowX11 X11
#define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextEGL EGL
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 X11
#define _GLFW_PLATFORM_LIBRARY_OPENGL_STATE _GLFWlibraryEGL EGL
// Clipboard format atom indices
#define _GLFW_CLIPBOARD_FORMAT_UTF8 0
#define _GLFW_CLIPBOARD_FORMAT_COMPOUND 1
#define _GLFW_CLIPBOARD_FORMAT_STRING 2
#define _GLFW_CLIPBOARD_FORMAT_COUNT 3
// Clipboard conversion status tokens
#define _GLFW_CONVERSION_INACTIVE 0
#define _GLFW_CONVERSION_SUCCEEDED 1
#define _GLFW_CONVERSION_FAILED 2
//========================================================================
// GLFW platform specific types
//========================================================================
//------------------------------------------------------------------------
// Pointer length integer
//------------------------------------------------------------------------
typedef intptr_t GLFWintptr;
//------------------------------------------------------------------------
// Platform-specific OpenGL context structure
//------------------------------------------------------------------------
typedef struct _GLFWcontextEGL
{
EGLConfig config;
EGLContext context;
EGLSurface surface;
XVisualInfo* visual;
} _GLFWcontextEGL;
//------------------------------------------------------------------------
// Platform-specific window structure
//------------------------------------------------------------------------
typedef struct _GLFWwindowX11
{
// Platform specific window resources
Colormap colormap; // Window colormap
Window handle; // Window handle
// Various platform specific internal variables
GLboolean overrideRedirect; // True if window is OverrideRedirect
GLboolean keyboardGrabbed; // True if keyboard is currently grabbed
GLboolean cursorGrabbed; // True if cursor is currently grabbed
GLboolean cursorHidden; // True if cursor is currently hidden
GLboolean cursorCentered; // True if cursor was moved since last poll
int cursorPosX, cursorPosY;
} _GLFWwindowX11;
//------------------------------------------------------------------------
// Platform-specific library global data for X11
//------------------------------------------------------------------------
typedef struct _GLFWlibraryX11
{
Display* display;
int screen;
Window root;
Cursor cursor; // Invisible cursor for hidden cursor
Atom wmDeleteWindow; // WM_DELETE_WINDOW atom
Atom wmName; // _NET_WM_NAME atom
Atom wmIconName; // _NET_WM_ICON_NAME atom
Atom wmPing; // _NET_WM_PING atom
Atom wmState; // _NET_WM_STATE atom
Atom wmStateFullscreen; // _NET_WM_STATE_FULLSCREEN atom
Atom wmActiveWindow; // _NET_ACTIVE_WINDOW atom
// True if window manager supports EWMH
GLboolean hasEWMH;
struct {
GLboolean available;
int eventBase;
int errorBase;
} VidMode;
struct {
GLboolean available;
int eventBase;
int errorBase;
int majorVersion;
int minorVersion;
GLboolean gammaBroken;
} RandR;
struct {
GLboolean available;
int majorOpcode;
int eventBase;
int errorBase;
int majorVersion;
int minorVersion;
} Xkb;
// Key code LUT (mapping X11 key codes to GLFW key codes)
int keyCodeLUT[256];
// Screensaver data
struct {
GLboolean changed;
int timeout;
int interval;
int blanking;
int exposure;
} saver;
// Fullscreen data
struct {
GLboolean modeChanged;
#if defined(_GLFW_HAS_XRANDR)
SizeID oldSizeID;
int oldWidth;
int oldHeight;
Rotation oldRotation;
#endif /*_GLFW_HAS_XRANDR*/
#if defined(_GLFW_HAS_XF86VIDMODE)
XF86VidModeModeInfo oldMode;
#endif /*_GLFW_HAS_XF86VIDMODE*/
} FS;
// Timer data
struct {
GLboolean monotonic;
double resolution;
uint64_t base;
} timer;
// Selection data
struct {
Atom atom;
Atom formats[_GLFW_CLIPBOARD_FORMAT_COUNT];
char* string;
Atom target;
Atom targets;
Atom property;
int status;
} selection;
} _GLFWlibraryX11;
//------------------------------------------------------------------------
// Platform-specific library global data for EGL
//------------------------------------------------------------------------
typedef struct _GLFWlibraryEGL
{
EGLDisplay display;
EGLint majorVersion, minorVersion;
#if defined(_GLFW_DLOPEN_LIBEGL)
void* libEGL; // dlopen handle for libEGL.so
#endif
} _GLFWlibraryEGL;
//------------------------------------------------------------------------
// Joystick information & state
//------------------------------------------------------------------------
GLFWGLOBAL struct {
int Present;
int fd;
int NumAxes;
int NumButtons;
float* Axis;
unsigned char* Button;
} _glfwJoy[GLFW_JOYSTICK_LAST + 1];
//========================================================================
// Prototypes for platform specific internal functions
//========================================================================
// Time
void _glfwInitTimer(void);
// OpenGL(|ES) support
int _glfwInitOpenGL(void);
void _glfwTerminateOpenGL(void);
int _glfwCreateContext(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig);
void _glfwDestroyContext(_GLFWwindow* window);
XVisualInfo* _glfwGetContextVisual(_GLFWwindow* window);
// Fullscreen support
int _glfwGetClosestVideoMode(int* width, int* height, int* rate);
void _glfwSetVideoModeMODE(int mode, int rate);
void _glfwSetVideoMode(int* width, int* height, int* rate);
void _glfwRestoreVideoMode(void);
// Joystick input
void _glfwInitJoysticks(void);
void _glfwTerminateJoysticks(void);
// Unicode support
long _glfwKeySym2Unicode(KeySym keysym);
// Clipboard handling
GLboolean _glfwReadSelection(XSelectionEvent* request);
Atom _glfwWriteSelection(XSelectionRequestEvent* request);
// Event processing
void _glfwProcessPendingEvents(void);
#endif // _platform_h_

3
src/x11_fullscreen.c
View File

@ -357,6 +357,8 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
rgbarray = (int*) malloc(sizeof(int) * viscount);
rgbcount = 0;
// Temporary solution
#if !defined(_GLFW_X11_EGL)
// Build RGB array
for (k = 0; k < viscount; k++)
{
@ -386,6 +388,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
}
}
}
#endif
XFree(vislist);

1
src/x11_platform.h
View File

@ -85,6 +85,7 @@
#define _GLFW_PLATFORM_CONTEXT_STATE _GLFWcontextGLX GLX
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryX11 X11
#define _GLFW_PLATFORM_LIBRARY_OPENGL_STATE _GLFWlibraryGLX GLX
#define _GLFW_CTX GLX
// Clipboard format atom indices
#define _GLFW_CLIPBOARD_FORMAT_UTF8 0