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WinRT: improved OpenGL ES compatibility on WinPhone/ARM and Surface RT 

This change integrates initialization settings for ANGLE/WinRT, as suggested in
MSOpenTech's latest ANGLE template-projects (for MSVC).

This should fix some OpenGL initialization issues on WinPhone 8.1 on ARM, and
on the 1st-generation Surface RT.
This commit is contained in:
David Ludwig 2015-02-15 11:53:24 -05:00
parent ec2df6490e
commit 5ad34f7a79
1 changed files with 67 additions and 9 deletions
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76
src/video/winrt/SDL_winrtopengles.cpp
View File

@ -36,10 +36,15 @@ using namespace Windows::UI::Core;
/* ANGLE/WinRT constants */
static const int ANGLE_D3D_FEATURE_LEVEL_ANY = 0;
#define EGL_PLATFORM_ANGLE_ANGLE 0x3201
#define EGL_PLATFORM_ANGLE_TYPE_ANGLE 0x3202
#define EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE 0x3205
#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE 0x3207
#define EGL_PLATFORM_ANGLE_ANGLE 0x3201
#define EGL_PLATFORM_ANGLE_TYPE_ANGLE 0x3202
#define EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE 0x3204
#define EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE 0x3203
#define EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE 0x3205
#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE 0x3207
#define EGL_PLATFORM_ANGLE_USE_WARP_ANGLE 0x3208
#define EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER 0x320B
/*
* SDL/EGL top-level implementation
@ -82,9 +87,35 @@ WINRT_GLES_LoadLibrary(_THIS, const char *path)
if (!_this->egl_data->egl_display) {
return SDL_SetError("Could not get EGL display");
}
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
return SDL_SetError("Could not initialize EGL");
}
} else {
const EGLint displayAttributes[] = {
/* Declare some ANGLE/EGL initialization property-sets, as suggested by
* MSOpenTech's ANGLE-for-WinRT template apps:
*/
const EGLint defaultDisplayAttributes[] =
{
EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER, EGL_TRUE,
EGL_NONE,
};
const EGLint fl9_3DisplayAttributes[] =
{
EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE, 9,
EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE, 3,
EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER, EGL_TRUE,
EGL_NONE,
};
const EGLint warpDisplayAttributes[] =
{
EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
EGL_PLATFORM_ANGLE_USE_WARP_ANGLE, EGL_TRUE,
EGL_ANGLE_DISPLAY_ALLOW_RENDER_TO_BACK_BUFFER, EGL_TRUE,
EGL_NONE,
};
@ -99,14 +130,41 @@ WINRT_GLES_LoadLibrary(_THIS, const char *path)
return SDL_SetError("Could not retrieve ANGLE/WinRT display function(s)");
}
_this->egl_data->egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, displayAttributes);
#if (WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP)
/* Try initializing EGL at D3D11 Feature Level 10_0+ (which is not
* supported on WinPhone 8.x.
*/
_this->egl_data->egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, defaultDisplayAttributes);
if (!_this->egl_data->egl_display) {
return SDL_SetError("Could not get EGL display");
}
}
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
return SDL_SetError("Could not initialize EGL");
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE)
#endif
{
/* Try initializing EGL at D3D11 Feature Level 9_3, in case the
* 10_0 init fails, or we're on Windows Phone (which only supports
* 9_3).
*/
_this->egl_data->egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, fl9_3DisplayAttributes);
if (!_this->egl_data->egl_display) {
return SDL_SetError("Could not get 9_3 EGL display");
}
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
/* Try initializing EGL at D3D11 Feature Level 11_0 on WARP
* (a Windows-provided, software rasterizer) if all else fails.
*/
_this->egl_data->egl_display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, EGL_DEFAULT_DISPLAY, warpDisplayAttributes);
if (!_this->egl_data->egl_display) {
return SDL_SetError("Could not get WARP EGL display");
}
if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) {
return SDL_SetError("Could not initialize EGL");
}
}
}
}
return 0;