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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.
This commit is contained in:
Sam Lantinga 2014-02-22 15:23:09 -08:00
parent af0ab49003
commit f7de4ae130
1 changed files with 6 additions and 5 deletions
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11
src/video/uikit/SDL_uikitopenglview.m
View File

@ -56,6 +56,11 @@
const BOOL useDepthBuffer = (depthBits != 0); const BOOL useDepthBuffer = (depthBits != 0);
NSString *colorFormat = nil; 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 (rBits == 8 && gBits == 8 && bBits == 8) {
/* if user specifically requests rbg888 or some color format higher than 16bpp */ /* if user specifically requests rbg888 or some color format higher than 16bpp */
colorFormat = kEAGLColorFormatRGBA8; colorFormat = kEAGLColorFormatRGBA8;
@ -71,11 +76,7 @@
eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool: retained], kEAGLDrawablePropertyRetainedBacking, colorFormat, kEAGLDrawablePropertyColorFormat, nil]; [NSNumber numberWithBool: retained], kEAGLDrawablePropertyRetainedBacking, colorFormat, kEAGLDrawablePropertyColorFormat, nil];
if (majorVersion > 1) { context = [[EAGLContext alloc] initWithAPI:api sharegroup:shareGroup];
context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2 sharegroup:shareGroup];
} else {
context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1 sharegroup:shareGroup];
}
if (!context || ![EAGLContext setCurrentContext:context]) { if (!context || ![EAGLContext setCurrentContext:context]) {
[self release]; [self release];
SDL_SetError("OpenGL ES %d not supported", majorVersion); SDL_SetError("OpenGL ES %d not supported", majorVersion);