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Fixes #2308, recreate window if GL requirements for the renderer are not met

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If the window has been created with values for SDL_GL_CONTEXT_PROFILE_MASK,
SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION not matching those
required by the renderer, attempt to recreate the window.
This is needed on platforms where both GL and GLES 1/2 surfaces are supported
by the video backend, requiring that the window be recreated when switching
between context types.
This commit is contained in:
Gabriel Jacobo 2014-02-25 17:42:34 -03:00
parent dedca211f8
commit 83efc7045c
3 changed files with 42 additions and 21 deletions
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23
src/render/opengles2/SDL_render_gles2.c
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@ -28,6 +28,9 @@
#include "../../video/SDL_blit.h"
#include "SDL_shaders_gles2.h"
#define RENDERER_CONTEXT_MAJOR 2
#define RENDERER_CONTEXT_MINOR 0
/* Used to re-create the window with OpenGL ES capability */
extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);
@ -1740,24 +1743,24 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
Uint32 windowFlags;
GLint window_framebuffer;
GLint value;
int profileMask, majorVersion, minorVersion;
int profile_mask, major, minor;
SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &profileMask);
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &majorVersion);
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &minorVersion);
SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &profile_mask);
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &major);
SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &minor);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, RENDERER_CONTEXT_MAJOR);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, RENDERER_CONTEXT_MINOR);
windowFlags = SDL_GetWindowFlags(window);
if (!(windowFlags & SDL_WINDOW_OPENGL) ||
profileMask != SDL_GL_CONTEXT_PROFILE_ES || majorVersion != 2 || minorVersion != 0) {
profile_mask != SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) {
if (SDL_RecreateWindow(window, windowFlags | SDL_WINDOW_OPENGL) < 0) {
/* Uh oh, better try to put it back... */
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, profileMask);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, majorVersion);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, minorVersion);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, profile_mask);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, major);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, minor);
SDL_RecreateWindow(window, windowFlags);
return NULL;
}