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Add OpenGL support to SDL. This allows applications to request a SDL_…
…OPENGL main video surface. Note that only OpenGL ES 1.1 is actually supported.
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Artem Simonov
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Feb 13, 2012
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* | ||
| SDL - Simple DirectMedia Layer | ||
| This library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| This library is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with this library; if not, write to the Free Software | ||
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
|
|
||
| #ifndef GLIOP_H | ||
| #define GLIOP_H | ||
|
|
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| #define GL_VERSION_1_5 | ||
| #define GL_ES | ||
| #define GL_ES_VERSION_1_1 | ||
|
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| #include <begin_code.h> | ||
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|
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| #include <GLES/gl.h> | ||
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
| /* | ||
| These are not defined in GLES | ||
| */ | ||
| typedef double GLdouble; | ||
| typedef double GLclampd; | ||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
| #include <close_code.h> | ||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,232 @@ | ||
| /* | ||
| * SDL_playbookvideo_gl.c | ||
| * | ||
| * Created on: 2012-01-17 | ||
| * Author: asimonov | ||
| */ | ||
|
|
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| #include "SDL_config.h" | ||
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| #include "SDL_video.h" | ||
| #include "SDL_mouse.h" | ||
| #include "../SDL_sysvideo.h" | ||
| #include "../SDL_pixels_c.h" | ||
| #include "../../events/SDL_events_c.h" | ||
|
|
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| #include <bps/bps.h> | ||
| #include <bps/screen.h> | ||
| #include <bps/event.h> | ||
| #include <bps/orientation.h> | ||
| #include <bps/navigator.h> | ||
|
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| #include "touchcontroloverlay.h" | ||
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| #include "SDL_playbookvideo_c.h" | ||
| #include "SDL_playbookvideo_gl_c.h" | ||
| #include "SDL_playbookevents_c.h" | ||
| #include "SDL_playbookhw_c.h" | ||
| #include "SDL_playbooktouch_c.h" | ||
| #include "SDL_playbookyuv_c.h" | ||
|
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| #include <EGL/egl.h> | ||
| #include <GLES/gl.h> | ||
| #include <errno.h> // ::errno | ||
| #include <time.h> // struct tm, clock_gettime | ||
|
|
||
| static void egl_perror(const char *msg) | ||
| { | ||
| static const char *errmsg[] = { | ||
| "function succeeded", | ||
| "EGL is not initialized, or could not be initialized, for the specified display", | ||
| "cannot access a requested resource", | ||
| "failed to allocate resources for the requested operation", | ||
| "an unrecognized attribute or attribute value was passed in an attribute list", | ||
| "an EGLConfig argument does not name a valid EGLConfig", | ||
| "an EGLContext argument does not name a valid EGLContext", | ||
| "the current surface of the calling thread is no longer valid", | ||
| "an EGLDisplay argument does not name a valid EGLDisplay", | ||
| "arguments are inconsistent", | ||
| "an EGLNativePixmapType argument does not refer to a valid native pixmap", | ||
| "an EGLNativeWindowType argument does not refer to a valid native window", | ||
| "one or more argument values are invalid", | ||
| "an EGLSurface argument does not name a valid surface configured for rendering", | ||
| "a power management event has occurred", | ||
| }; | ||
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| fprintf(stderr, "%s: %s\n", msg, errmsg[eglGetError() - EGL_SUCCESS]); | ||
| } | ||
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| SDL_Surface *PLAYBOOK_SetVideoMode_GL(_THIS, SDL_Surface *current, | ||
| int width, int height, int bpp, Uint32 flags) | ||
| { | ||
| int rc; | ||
| EGLint attributes[] = { | ||
| EGL_RED_SIZE, 8, | ||
| EGL_GREEN_SIZE, 8, | ||
| EGL_BLUE_SIZE, 8, | ||
| EGL_ALPHA_SIZE, 8, | ||
| EGL_SURFACE_TYPE, EGL_WINDOW_BIT, | ||
| EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT, | ||
| EGL_NONE | ||
| }; | ||
| EGLint contextAttributes[3] = { EGL_CONTEXT_CLIENT_VERSION, 1, EGL_NONE }; | ||
| EGLConfig configs[1]; | ||
| EGLint configCount; | ||
| screen_window_t screenWindow; | ||
| int format = SCREEN_FORMAT_RGBX8888; | ||
| int sizeOfWindow[2] = {1024, 600}; | ||
| int sizeOfBuffer[2] = {width, height}; | ||
| int usage = SCREEN_USAGE_OPENGL_ES1; | ||
| EGLint eglSurfaceAttributes[3] = { EGL_RENDER_BUFFER, EGL_BACK_BUFFER, EGL_NONE }; | ||
|
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| if (_priv->screenWindow) { | ||
| fprintf(stderr, "OpenGL window already created... this WILL fail\n"); // FIXME | ||
| } | ||
|
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| _priv->eglInfo.eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); | ||
| if (_priv->eglInfo.eglDisplay == EGL_NO_DISPLAY) { | ||
| egl_perror("eglGetDisplay"); | ||
| goto error1; | ||
| } | ||
|
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| rc = eglInitialize(_priv->eglInfo.eglDisplay, NULL, NULL); | ||
| if (rc != EGL_TRUE) { | ||
| egl_perror("eglInitialize"); | ||
| goto error1; | ||
| } | ||
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| rc = eglBindAPI(EGL_OPENGL_ES_API); | ||
| if (rc != EGL_TRUE) { | ||
| egl_perror("eglBindAPI"); | ||
| goto error2; | ||
| } | ||
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| rc = eglChooseConfig(_priv->eglInfo.eglDisplay, attributes, configs, 1, &configCount); | ||
| if (rc != EGL_TRUE) { | ||
| egl_perror("eglBindAPI"); | ||
| eglTerminate(_priv->eglInfo.eglDisplay); | ||
| return NULL; | ||
| } else if (configCount <= 0) { | ||
| fprintf(stderr, "No matching configurations found."); | ||
| goto error2; | ||
| } | ||
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| _priv->eglInfo.eglContext = eglCreateContext(_priv->eglInfo.eglDisplay, configs[0], EGL_NO_CONTEXT, contextAttributes); | ||
| if (_priv->eglInfo.eglContext == EGL_NO_CONTEXT) { | ||
| egl_perror("eglCreateContext"); | ||
| goto error2; | ||
| } | ||
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| screenWindow = PLAYBOOK_CreateWindow(this, current, width, height, bpp); | ||
| if (screenWindow == NULL) { | ||
| goto error3; | ||
| } | ||
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| rc = screen_set_window_property_iv(screenWindow, SCREEN_PROPERTY_SIZE, sizeOfWindow); | ||
| if (rc) { | ||
| SDL_SetError("Cannot resize window: %s", strerror(errno)); | ||
| screen_destroy_window(screenWindow); | ||
| return NULL; | ||
| } | ||
|
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| // rc = screen_set_window_property_iv(screenWindow, SCREEN_PROPERTY_BUFFER_SIZE, sizeOfBuffer); | ||
| // if (rc) { | ||
| // SDL_SetError("Cannot resize window buffer: %s", strerror(errno)); | ||
| // screen_destroy_window(screenWindow); | ||
| // return NULL; | ||
| // } | ||
|
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| rc = screen_set_window_property_iv(screenWindow, SCREEN_PROPERTY_FORMAT, &format); | ||
| if (rc) { | ||
| SDL_SetError("Cannot set window format: %s", strerror(errno)); | ||
| goto error4; | ||
| } | ||
|
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| rc = screen_set_window_property_iv(screenWindow, SCREEN_PROPERTY_USAGE, &usage); | ||
| if (rc) { | ||
| SDL_SetError("Cannot set window usage: %s", strerror(errno)); | ||
| goto error4; | ||
| } | ||
|
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| rc = screen_create_window_buffers(screenWindow, 2); | ||
| if (rc) { | ||
| SDL_SetError("Cannot create window buffers: %s", strerror(errno)); | ||
| goto error4; | ||
| } | ||
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| _priv->eglInfo.eglSurface = eglCreateWindowSurface(_priv->eglInfo.eglDisplay, configs[0], | ||
| screenWindow, (EGLint*)&eglSurfaceAttributes); | ||
| if (_priv->eglInfo.eglSurface == EGL_NO_SURFACE) { | ||
| egl_perror("eglCreateWindowSurface"); | ||
| goto error4; | ||
| } | ||
|
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| rc = eglMakeCurrent(_priv->eglInfo.eglDisplay, _priv->eglInfo.eglSurface, _priv->eglInfo.eglSurface, _priv->eglInfo.eglContext); | ||
| if (rc != EGL_TRUE) { | ||
| egl_perror("eglMakeCurrent"); | ||
| goto error5; | ||
| } | ||
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| initializeOverlay(this, screenWindow); | ||
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| _priv->screenWindow = screenWindow; | ||
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| current->flags &= ~SDL_RESIZABLE; | ||
| current->flags |= SDL_FULLSCREEN; | ||
| current->flags |= SDL_HWSURFACE; | ||
| current->flags |= SDL_OPENGL; | ||
| current->w = width; | ||
| current->h = height; | ||
| current->pixels = 0; | ||
| _priv->surface = current; | ||
| return current; | ||
| error5: | ||
| eglDestroySurface(_priv->eglInfo.eglDisplay, _priv->eglInfo.eglSurface); | ||
| _priv->eglInfo.eglSurface = 0; | ||
| error4: | ||
| screen_destroy_window(screenWindow); | ||
| error3: | ||
| eglDestroyContext(_priv->eglInfo.eglDisplay, _priv->eglInfo.eglContext); | ||
| _priv->eglInfo.eglContext = 0; | ||
| error2: | ||
| eglTerminate(_priv->eglInfo.eglDisplay); | ||
| _priv->eglInfo.eglDisplay = 0; | ||
| error1: | ||
| return NULL; | ||
| } | ||
|
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| /* Sets the dll to use for OpenGL and loads it */ | ||
| int PLAYBOOK_GL_LoadLibrary(_THIS, const char *path) | ||
| { | ||
| fprintf(stderr, "%s\n", __FUNCTION__); | ||
| return 0; | ||
| } | ||
|
|
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| /* Retrieves the address of a function in the gl library */ | ||
| void* PLAYBOOK_GL_GetProcAddress(_THIS, const char *proc) { | ||
| fprintf(stderr, "%s\n", __FUNCTION__); | ||
| return 0; | ||
| } | ||
|
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| /* Get attribute information from the windowing system. */ | ||
| int PLAYBOOK_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | ||
| { | ||
| fprintf(stderr, "%s\n", __FUNCTION__); | ||
| return 0; | ||
| } | ||
|
|
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| /* Make the context associated with this driver current */ | ||
| int PLAYBOOK_GL_MakeCurrent(_THIS) | ||
| { | ||
| int rc = eglMakeCurrent(_priv->eglInfo.eglDisplay, _priv->eglInfo.eglSurface, _priv->eglInfo.eglSurface, _priv->eglInfo.eglContext); | ||
| // fprintf(stderr, "%s: %d\n", __FUNCTION__, rc); | ||
| return rc; | ||
| } | ||
|
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| /* Swap the current buffers in double buffer mode. */ | ||
| void PLAYBOOK_GL_SwapBuffers(_THIS) | ||
| { | ||
| // fprintf(stderr, "%s\n", __FUNCTION__); | ||
| eglSwapBuffers(_priv->eglInfo.eglDisplay, _priv->eglInfo.eglSurface); | ||
| } |
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