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windows: support forcing EGL for GL desktop

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This will theoretically support ANGLE's GL desktop frontend whenever it
becomes fully implemented and enabled in the future.
This commit is contained in:
Steven Noonan
2022-09-11 12:30:18 -07:00
parent 085a276d6c
commit e8fbb02d16
3 changed files with 9 additions and 4 deletions
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1
src/video/SDL_egl.c
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@@ -76,6 +76,7 @@
#elif SDL_VIDEO_DRIVER_WINDOWS || SDL_VIDEO_DRIVER_WINRT
/* EGL AND OpenGL ES support via ANGLE */
#define DEFAULT_EGL "libEGL.dll"
#define DEFAULT_OGL "opengl32.dll"
#define DEFAULT_OGL_ES2 "libGLESv2.dll"
#define DEFAULT_OGL_ES_PVR "libGLES_CM.dll"
#define DEFAULT_OGL_ES "libGLESv1_CM.dll"

7
src/video/windows/SDL_windowsopengles.c
View File

@@ -22,6 +22,7 @@
#if SDL_VIDEO_DRIVER_WINDOWS && SDL_VIDEO_OPENGL_EGL && !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
#include "SDL_hints.h"
#include "SDL_windowsvideo.h"
#include "SDL_windowsopengles.h"
#include "SDL_windowsopengl.h"
@@ -33,7 +34,8 @@ int
WIN_GLES_LoadLibrary(_THIS, const char *path) {
/* If the profile requested is not GL ES, switch over to WIN_GL functions */
if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES &&
!SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, SDL_FALSE)) {
#if SDL_VIDEO_OPENGL_WGL
WIN_GLES_UnloadLibrary(_this);
_this->GL_LoadLibrary = WIN_GL_LoadLibrary;
@@ -66,7 +68,8 @@ WIN_GLES_CreateContext(_THIS, SDL_Window * window)
SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
#if SDL_VIDEO_OPENGL_WGL
if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) {
if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES &&
!SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, SDL_FALSE)) {
/* Switch to WGL based functions */
WIN_GLES_UnloadLibrary(_this);
_this->GL_LoadLibrary = WIN_GL_LoadLibrary;

5
src/video/windows/SDL_windowswindow.c
View File

@@ -542,9 +542,10 @@ WIN_CreateWindow(_THIS, SDL_Window * window)
/* The rest of this macro mess is for OpenGL or OpenGL ES windows */
#if SDL_VIDEO_OPENGL_ES2
if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES
if ((_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES ||
SDL_GetHintBoolean(SDL_HINT_VIDEO_FORCE_EGL, SDL_FALSE)) &&
#if SDL_VIDEO_OPENGL_WGL
&& (!_this->gl_data || WIN_GL_UseEGL(_this))
(!_this->gl_data || WIN_GL_UseEGL(_this))
#endif /* SDL_VIDEO_OPENGL_WGL */
) {
#if SDL_VIDEO_OPENGL_EGL