src/render


Log

Author Commit Date CI Message
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 67901f53 2016-10-01T13:29:30 Fixed bug 3174 - SDL_SetRenderTarget clip rect Marcel Bakker In SDL_SetRenderTarget(), i think the intended behavior was to clear the clip rect when a new target is set.
Sam Lantinga 86b4319d 2016-10-01T13:07:36 Fixed bug 3422 - OpenGL ES 1.1 renderer: SDL_UpdateTexture breaks later function calls (missing glDisable) ny00 Using the OpenGL ES 1.1 renderer, after updating a texture with SDL_UpdateTexture (or SDL_UnlockTexture), a following call to SDL_RenderFillRect draws a rectangle with the wrong color (which appears to be the same as the texture's top-left pixel). Comparing SDL_render_gles.c:GLES_UpdateTexture to SDL_render_gl.c:GL_UpdateTexture, a missing call to glDisable appears to be the cause. After adding it back, the bug is resolved.
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 89c868f4 2016-10-01T11:40:57 Fixed bug 3347 - OpenGL ES renderer doesn't flip projection matrix for target textures Simon Hug When updating the viewport in GLES_UpdateViewport, the OpenGL ES renderer doesn't flip the projection matrix for target textures. The lines, rectangles and textures (if drawn with glDrawArrays) are upside down when drawing to target textures.
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 a42c396a 2016-10-01T11:04:45 Fixed bug 3361 - Texture color modulation doesn't work with active NONE blend mode (opengl and opengles) Simon Hug The GL_SetBlendMode and GLES_SetBlendMode functions of the opengl and opengles renderers call the glTexEnvf to set the texture env mode to either GL_MODULATE (the default) or GL_REPLACE for the NONE blend mode. Using GL_REPLACE disables color and alpha modulation for textures. These glTexEnv calls were put in the SetBlendMode function back in 2006 [1], but there the NONE code still used the GL_DECAL mode. The GL_REPLACE mode came in 2008 [2]. I'm a bit confused why that wasn't always GL_MODULATE and a bit surprised nobody reported that yet (unless I missed it). I guess only a few use the gles renderer and the newish shaders mask the issue.
Sam Lantinga 3f1b1629 2016-10-01T10:52:24 Fixed bug 3362 - OpenGL renderer doesn't check if framebuffers are supported when creating target textures Simon Hug The GL_CreateTexture function doesn't have any checks for the case where the driver doesn't support the framebuffer object extension. It will call into GL_GetFBO which will call the non-existent glGenFramebuffersEXT. Also, for some reason GL_CreateContext always sets the SDL_RENDERER_TARGETTEXTURE info flag, even if it is not supported. Changeset cc226dce7536 [1] makes this change, but doesn't explain why. It seems to me like the code would already have taken care of this [2]. The attached patch adds some checks and stops SDL from reporting render target support if there is none. The application can then properly inform the user instead of just crashing.
Sam Lantinga 2ccb46ce 2016-10-01T10:43:01 Fixed bug 3373 - OpenGL implementation differences of glDrawTexfOES Simon Hug It seems not everyone implemented glDrawTexfOES the same. Intel and Mesa ignore the viewport entirely, whereas the Raspberry Pi implementation offsets the coordinates and does viewport clipping. The glDrawTexfOES extension text [1] for the function says "Xs and Ys are given directly in window (viewport) coordinates." I guess this wasn't clear enough. Alex Szpakowski Honestly I'd probably remove that codepath from SDL_Render entirely. It's an OpenGL ES 1-specific extension that isn't likely to give huge performance gains and adds additional maintenance overhead to SDL_Render while also having bugs in some drivers (as seen here).
Sam Lantinga b7e45f8a 2016-10-01T10:28:00 Fixed bug 3336 - Failure to build with MinGW-w64 Kai Sterker There are already patches available from mingw64 that fix the issue https://github.com/Alexpux/MINGW-packages/tree/master/mingw-w64-SDL2 With those applied, I could compile SDL2 without problems. But of course, it would be preferable if SDL built cleanly from source.
Sam Lantinga 86d4b099 2016-09-13T18:44:28 Fixed spacing
Alex Szpakowski f0505766 2016-09-13T22:18:06 Initial Apple TV / tvOS support. The Apple TV remote is currently exposed as a joystick with its touch surface treated as two axes. Key presses are also generated when its buttons and touch surface are used. A new hint has been added to help deal with deciding whether to background the app when the remote's menu button is pressed: SDL_HINT_APPLE_TV_CONTROLLER_UI_EVENTS.
David Ludwig 23af328b 2016-06-24T22:17:56 Fixed Bug 3147 - Windows: Crash when resizing Window since hg 1f9d57965528 Thanks for the fix, Gab!
Philipp Wiesemann 831597f7 2016-04-01T21:13:58 PSP: Fixed returning success from unsupported SDL_RenderReadPixels(). This also fixed the missing error message.
Philipp Wiesemann d1e48141 2016-04-01T21:12:37 PSP: Fixed returning success for unsupported SDL_SetTextureColorMod(). Partially fixes Bugzilla #3298.
Philipp Wiesemann 0a1999df 2016-01-16T21:25:10 Fixed compile warnings about type conversion. Found by buildbot.
Ethan Lee 167cf14c 2016-01-05T16:39:18 SDL_RenderSetIntegerScale
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.
David Ludwig 9e9ef5ad 2015-12-27T17:55:45 Fixed bug 3202 - Fix renderer visibility on a window maximized directly from the minimized state Many thanks to id.zeta for details on the bug, and for the fix!
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.
David Ludwig 25abce51 2015-11-29T19:33:11 WinRT: added Win10/UWP (Universal Windows Platform) support "UWP" appears to be Microsoft's new name for WinRT/Windows-Store APIs. This set of changes updates SDL's WinRT backends to support the Win10 flavor of WinRT. It has been tested on Win10 on a desktop. In theory, it should also support Win10 on other devices (phone, Xbox One, etc.), however further patches may be necessary. This adds: - a set of MSVC 2015 project files, for use in creating UWP apps - modifications to various pieces of SDL, in order to compile via MSVC 2015 + the Win10 API set - enables SDL_Window resizing and programmatic-fullscreen toggling, when using the WinRT backend - WinRT README updates
David Ludwig 623898f7 2015-11-26T00:41:39 WinRT: lots of display and windowing related fixes This change-set fixes a lot of windowing related bugs, especially with regards to Windows 8.x apps running on Windows 10 (which was the driver for this work). The primary fixes include: * listed display modes were wrong, especially when launching apps into a non-fullscreen space * reported window flags were often wrong, especially on Windows 10 * fullscreen/windowed mode switches weren't failing (they are not programmatically possible in Win 8.x apps).
Philipp Wiesemann 4c72d39c 2015-10-15T22:26:21 D3D11: Fixed SDL_RenderDrawPoints() ignoring input after the first 128 points. If a limit would be needed then count should be adapted before stack allocation.
Philipp Wiesemann 0856a7ef 2015-08-21T23:50:37 Changed an error return value from 0 to NULL for consistency.
Ryan C. Gordon ded3a16e 2015-06-23T01:44:44 Fixed compiler warning about shadowed local variables.
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().