src/render/opengles2


Log

Author Commit Date CI Message
Sam Lantinga 45b774e3 2017-01-01T18:33:28 Updated copyright for 2017
Ryan C. Gordon e93e91f0 2016-11-23T21:52:48 Pacify some GCC strict-aliasing compiler warnings.
Ryan C. Gordon 40c2a6fb 2016-11-23T11:49:26 Fixed more compiler warnings.
Sam Lantinga 57d01d7d 2016-11-13T22:57:41 Patch from Sylvain to fix clang warnings
Sam Lantinga 662f966c 2016-10-13T08:46:34 Fixed bug 3355 - false "Invalid renderer" after creating an "opengles2" renderer. Call SDL_GL_GetDrawableSize() directly because we may be in the initialization path and SDL_GetRendererOutputSize() will fail because the renderer magic isn't set up yet.
Sam Lantinga ecea3c4a 2016-10-01T13:33:32 Fixed bug 3169 - GLES2_CreateRenderer does not check SDL_GL_GetAttribute result, causing use of uninitialized data Yann Dirson When attempting to force use of opengles2 renderer with: int wanted_renderer = -1; for (int i = 0; i < numrenderers; i++) { SDL_RendererInfo renderer_info; if (SDL_GetRenderDriverInfo(i, &renderer_info) != 0) { SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't get renderer driver info: %s\n", SDL_GetError()); quit(2); } std::cerr << "Renderer " << i << " '" << renderer_info.name << "': flags=0x" << std::hex << renderer_info.flags << std::dec << ", " << renderer_info.num_texture_formats << " texture formats, max=" << renderer_info.max_texture_width << "x" << renderer_info.max_texture_height << "\n"; if (!strcmp(renderer_info.name, "opengles2")) { std::cerr << " selecting!\n"; wanted_renderer = i; } } renderer = SDL_CreateRenderer(window, wanted_renderer, 0); ... on banana pi or raspberry pi I get an error like the following (the actual context profile value varies, being used uninitialized) ERROR: Couldn't create renderer: Unknown OpenGL context profile 900 With this patch I get the following, which should help more pointing to a real problem: ERROR: Couldn't create renderer: Failed getting OpenGL glGetString entry point I pushed a patch (based on master branch of unofficial git mirror): https://github.com/O-Computers/SDL/commit/550389c89f4e73a0a5294f95b9f6e6c18ba48509 I'll be opening a different bug for the underlying issue.
Sam Lantinga 77305d47 2016-10-01T11:46:32 Fixed bug 3345 - SDL_RenderClear inconsistency with ClipRect Simon Hug The description of the SDL_RenderClear function in the SDL_render.h header says the following: "This function clears the entire rendering target, ignoring the viewport." The word "entire" implies that the clipping rectangle set with SDL_RenderSetClipRect also gets ignored. This is left somewhat ambiguous if only the viewport is mentioned. Minor thing, but let's see what the implementations actually do. The software renderer ignores the clipping rectangle when clearing. It even has a comment on this: /* By definition the clear ignores the clip rect */ Most other render drivers (opengl, opengles, opengles2, direct3d, and psp [I assume. Can't test it.]) use the scissor test for the ClipRect and don't disable it when clearing. Clearing will only happen within the clipping rectangle for these drivers. An exception is direct3d11 which uses a clear function that ignores the scissor test.
Sam Lantinga 061cc5e7 2016-10-01T11:38:53 Fixed bug 3349 - GLES2_RenderReadPixels doesn't use target texture format Simon Hug The OpenGL ES 2 renderer does not check the target texture format when using SDL_RenderReadPixels and just always uses ABGR8888. This can result in swapped or wrong colors. The attached patch adds a check and selects the target texture format, if a texture is set as the target.
Sam Lantinga 51d6371e 2016-10-01T11:34:04 Fixed bug 3350 - GL renderers don't need to flip rows after reading back pixels from the target texture Simon Hug All OpenGL renderers always flip the rows of the pixels that come from glReadPixels. This is unnecessary for target textures since these are already top down. Also, the rect->y value can be used directly for target textures for the same reason. I don't see any code that would handle the logical render size for target textures. Or am I missing something? The attached patch makes the renderers only the flip rows if the data comes from the default framebuffer.
Sam Lantinga 42065e78 2016-01-02T10:10:34 Updated copyright to 2016
Ryan C. Gordon f893ce3d 2015-12-28T15:15:58 OpenGL+GLES renderers: Fixed incorrect clip rectangle coords (thanks, Marcel!). Fixes Bugzilla #2700.
Alex Szpakowski 0c463d77 2015-12-10T20:25:34 SDL_GL_GetAttribute: If a GL context isn't active, only return failure when the specified attribute needs an active GL context to be queried.
Philipp Wiesemann 0e45984f 2015-06-21T17:33:46 Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().