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Fixed EGL glfwMakeUserContextCurrent - requires different surface

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This commit is contained in:
Doug Binks 2020-07-15 13:21:02 +01:00
parent d01ad1a78d
commit 3de9ed6453
2 changed files with 53 additions and 5 deletions
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40
src/egl_context.c
View File

@ -372,6 +372,8 @@ GLFWbool _glfwInitEGL(void)
_glfw_dlsym(_glfw.egl.handle, "eglQueryString");
_glfw.egl.GetProcAddress = (PFN_eglGetProcAddress)
_glfw_dlsym(_glfw.egl.handle, "eglGetProcAddress");
_glfw.egl.CreatePbufferSurface = (PFN_eglCreatePbufferSurface)
_glfw_dlsym(_glfw.egl.handle, "eglCreatePbufferSurface");
if (!_glfw.egl.GetConfigAttrib ||
!_glfw.egl.GetConfigs ||
@ -833,10 +835,10 @@ static void _glfwMakeUserContextCurrentEGL(_GLFWusercontext* context)
static void _glfwDestroyUserContextEGL(_GLFWusercontext* context)
{
if (context->egl.handle)
{
if (context->egl.surface!=EGL_NO_SURFACE)
eglDestroySurface(_glfw.egl.display,context->egl.surface);
eglDestroyContext(_glfw.egl.display, context->egl.handle);
}
free(context);
}
@ -844,6 +846,22 @@ _GLFWusercontext* _glfwCreateUserContextEGL(_GLFWwindow* window)
{
_GLFWusercontext* context;
_GLFWctxconfig ctxconfig;
const EGLint auxConfigAttribs[] =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_BLUE_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_RED_SIZE, 8, EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 0, EGL_STENCIL_SIZE, 0,
EGL_NONE
};
EGLint dummySurfaceAttribs[] =
{
EGL_WIDTH, 1, EGL_HEIGHT, 1,
EGL_TEXTURE_TARGET, EGL_NO_TEXTURE,
EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE,
EGL_NONE
};
EGLint dummySurfaceNumConfigs;
EGLConfig dummySurfaceConfig;
context = calloc(1, sizeof(_GLFWusercontext));
context->window = window;
@ -858,6 +876,22 @@ _GLFWusercontext* _glfwCreateUserContextEGL(_GLFWwindow* window)
free(context);
return NULL;
}
if (glfwExtensionSupported("EGL_KHR_surfaceless_context"))
context->egl.surface = EGL_NO_SURFACE;
else
{
// create dummy surface
eglChooseConfig(_glfw.egl.display, auxConfigAttribs, &dummySurfaceConfig, 1, &dummySurfaceNumConfigs);
context->egl.surface = eglCreatePbufferSurface(_glfw.egl.display, dummySurfaceConfig, dummySurfaceAttribs);
if (!context->egl.surface)
{
eglDestroyContext(_glfw.egl.display, context->egl.handle);
_glfwInputError(GLFW_PLATFORM_ERROR,
"EGL: Failed to create surface for user context and EGL_KHR_surfaceless_context not supported");
free(context);
return NULL;
}
}
context->makeCurrent = _glfwMakeUserContextCurrentEGL;
context->destroy = _glfwDestroyUserContextEGL;

14
src/egl_context.h
View File

@ -71,6 +71,12 @@
#define EGL_NO_DISPLAY ((EGLDisplay) 0)
#define EGL_NO_CONTEXT ((EGLContext) 0)
#define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType) 0)
#define EGL_PBUFFER_BIT 0x0001
#define EGL_HEIGHT 0x3056
#define EGL_WIDTH 0x3057
#define EGL_NO_TEXTURE 0x305C
#define EGL_TEXTURE_FORMAT 0x3080
#define EGL_TEXTURE_TARGET 0x3081
#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR 0x00000002
#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR 0x00000001
@ -130,6 +136,8 @@ typedef EGLBoolean (EGLAPIENTRY * PFN_eglSwapBuffers)(EGLDisplay,EGLSurface);
typedef EGLBoolean (EGLAPIENTRY * PFN_eglSwapInterval)(EGLDisplay,EGLint);
typedef const char* (EGLAPIENTRY * PFN_eglQueryString)(EGLDisplay,EGLint);
typedef GLFWglproc (EGLAPIENTRY * PFN_eglGetProcAddress)(const char*);
typedef EGLSurface (EGLAPIENTRY * PFN_eglCreatePbufferSurface)(EGLDisplay,EGLConfig,const EGLint*);
typedef EGLBoolean (EGLAPIENTRY * PFN_eglChooseConfig)(EGLDisplay,EGLint const*,EGLConfig*,EGLint,EGLint*);
#define eglGetConfigAttrib _glfw.egl.GetConfigAttrib
#define eglGetConfigs _glfw.egl.GetConfigs
#define eglGetDisplay _glfw.egl.GetDisplay
@ -146,6 +154,8 @@ typedef GLFWglproc (EGLAPIENTRY * PFN_eglGetProcAddress)(const char*);
#define eglSwapInterval _glfw.egl.SwapInterval
#define eglQueryString _glfw.egl.QueryString
#define eglGetProcAddress _glfw.egl.GetProcAddress
#define eglCreatePbufferSurface _glfw.egl.CreatePbufferSurface
#define eglChooseConfig _glfw.egl.ChooseConfig
typedef EGLDisplay (EGLAPIENTRY * PFNEGLGETPLATFORMDISPLAYEXTPROC)(EGLenum,void*,const EGLint*);
typedef EGLSurface (EGLAPIENTRY * PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC)(EGLDisplay,EGLConfig,void*,const EGLint*);
@ -169,6 +179,8 @@ typedef struct _GLFWcontextEGL
typedef struct _GLFWusercontextEGL
{
EGLContext handle;
EGLSurface surface;
} _GLFWusercontextEGL;
@ -214,6 +226,8 @@ typedef struct _GLFWlibraryEGL
PFN_eglSwapInterval SwapInterval;
PFN_eglQueryString QueryString;
PFN_eglGetProcAddress GetProcAddress;
PFN_eglCreatePbufferSurface CreatePbufferSurface;
PFN_eglChooseConfig ChooseConfig;
PFNEGLGETPLATFORMDISPLAYEXTPROC GetPlatformDisplayEXT;
PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC CreatePlatformWindowSurfaceEXT;