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EGL: Add support for EGL_EXT_platform_base

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This adds support for EGL_EXT_platform_base and its associated X11 and
Wayland extensions, allowing us to explicitly tell EGL which window
system we are using.

This is based on work by @linkmauve in #1691.

Closes #1691.
This commit is contained in:
Camilla Löwy
2020-06-03 22:02:25 +02:00
parent d7f7b0e1b5
commit aec9fae8f3
8 changed files with 94 additions and 7 deletions
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src/egl_context.c
+47 -6
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@@ -303,6 +303,7 @@ static void destroyContextEGL(_GLFWwindow* window)
GLFWbool _glfwInitEGL(void)
{
int i;
const char* extensions;
const char* sonames[] =
{
#if defined(_GLFW_EGL_LIBRARY)
@@ -395,7 +396,39 @@ GLFWbool _glfwInitEGL(void)
return GLFW_FALSE;
}
_glfw.egl.display = eglGetDisplay(_glfwPlatformGetEGLNativeDisplay());
extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (extensions && eglGetError() == EGL_SUCCESS)
_glfw.egl.EXT_client_extensions = GLFW_TRUE;
if (_glfw.egl.EXT_client_extensions)
{
_glfw.egl.EXT_platform_base =
_glfwStringInExtensionString("EGL_EXT_platform_base", extensions);
_glfw.egl.EXT_platform_x11 =
_glfwStringInExtensionString("EGL_EXT_platform_x11", extensions);
_glfw.egl.EXT_platform_wayland =
_glfwStringInExtensionString("EGL_EXT_platform_wayland", extensions);
}
if (_glfw.egl.EXT_platform_base)
{
_glfw.egl.GetPlatformDisplayEXT = (PFNEGLGETPLATFORMDISPLAYEXTPROC)
eglGetProcAddress("eglGetPlatformDisplayEXT");
_glfw.egl.CreatePlatformWindowSurfaceEXT = (PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC)
eglGetProcAddress("eglCreatePlatformWindowSurfaceEXT");
}
_glfw.egl.platform = _glfwPlatformGetEGLPlatform();
if (_glfw.egl.platform)
{
_glfw.egl.display =
eglGetPlatformDisplayEXT(_glfw.egl.platform,
_glfwPlatformGetEGLNativeDisplay(),
NULL);
}
else
_glfw.egl.display = eglGetDisplay(_glfwPlatformGetEGLNativeDisplay());
if (_glfw.egl.display == EGL_NO_DISPLAY)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
@@ -463,6 +496,7 @@ GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
EGLint attribs[40];
EGLConfig config;
EGLContext share = NULL;
EGLNativeWindowType native;
int index = 0;
if (!_glfw.egl.display)
@@ -598,11 +632,18 @@ GLFWbool _glfwCreateContextEGL(_GLFWwindow* window,
setAttrib(EGL_NONE, EGL_NONE);
window->context.egl.surface =
eglCreateWindowSurface(_glfw.egl.display,
config,
_glfwPlatformGetEGLNativeWindow(window),
attribs);
native = _glfwPlatformGetEGLNativeWindow(window);
if (_glfw.egl.platform)
{
window->context.egl.surface =
eglCreatePlatformWindowSurfaceEXT(_glfw.egl.display, config, native, attribs);
}
else
{
window->context.egl.surface =
eglCreateWindowSurface(_glfw.egl.display, config, native, attribs);
}
if (window->context.egl.surface == EGL_NO_SURFACE)
{
_glfwInputError(GLFW_PLATFORM_ERROR,