Commit f7de4ae130e8580f8b0165f2849e20284a2343d5
2014-02-22T15:23:09
Fixed bug 2407 - Support for OpenGL ES 3 contexts on iOS Alex Szpakowski Currently the UIKit/EAGL backend for SDL's OpenGL context creation API doesn't support OpenGL ES 3, despite iOS 7+ being capable (on devices with the necessary hardware.) I have attached a patch to add support. It's also slightly more future-proof, so eventual OpenGL ES 4+ capability on iOS should hopefully work without requiring changes to SDL's UIKit/EAGL backend.
diff --git a/src/video/uikit/SDL_uikitopenglview.m b/src/video/uikit/SDL_uikitopenglview.m
index c6daa1e..5c163c9 100644
--- a/src/video/uikit/SDL_uikitopenglview.m
+++ b/src/video/uikit/SDL_uikitopenglview.m
@@ -56,6 +56,11 @@
const BOOL useDepthBuffer = (depthBits != 0);
NSString *colorFormat = nil;
+ /* The EAGLRenderingAPI enum values currently map 1:1 to major GLES
+ versions, and this allows us to handle future OpenGL ES versions.
+ */
+ EAGLRenderingAPI api = majorVersion;
+
if (rBits == 8 && gBits == 8 && bBits == 8) {
/* if user specifically requests rbg888 or some color format higher than 16bpp */
colorFormat = kEAGLColorFormatRGBA8;
@@ -71,11 +76,7 @@
eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool: retained], kEAGLDrawablePropertyRetainedBacking, colorFormat, kEAGLDrawablePropertyColorFormat, nil];
- if (majorVersion > 1) {
- context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2 sharegroup:shareGroup];
- } else {
- context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1 sharegroup:shareGroup];
- }
+ context = [[EAGLContext alloc] initWithAPI:api sharegroup:shareGroup];
if (!context || ![EAGLContext setCurrentContext:context]) {
[self release];
SDL_SetError("OpenGL ES %d not supported", majorVersion);