diff options
Diffstat (limited to 'src/gl.c')
| -rw-r--r-- | src/gl.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/src/gl.c b/src/gl.c deleted file mode 100644 index 2f471aa..0000000 --- a/src/gl.c +++ /dev/null @@ -1,198 +0,0 @@ -#include "../include/gl.h" -#include "../include/library_loader.h" -#include <string.h> - -static bool gsr_gl_create_window(gsr_gl *self) { - const int attr[] = { - GLX_RENDER_TYPE, GLX_RGBA_BIT, - GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, - GLX_DOUBLEBUFFER, True, - GLX_RED_SIZE, 8, - GLX_GREEN_SIZE, 8, - GLX_BLUE_SIZE, 8, - GLX_ALPHA_SIZE, 8, - GLX_DEPTH_SIZE, 0, - None - }; - - GLXFBConfig *fbconfigs = NULL; - XVisualInfo *visual_info = NULL; - GLXFBConfig fbconfig = NULL; - Colormap colormap = None; - GLXContext gl_context = NULL; - Window window = None; - - int numfbconfigs = 0; - fbconfigs = self->glXChooseFBConfig(self->dpy, DefaultScreen(self->dpy), attr, &numfbconfigs); - for(int i = 0; i < numfbconfigs; i++) { - visual_info = self->glXGetVisualFromFBConfig(self->dpy, fbconfigs[i]); - if(!visual_info) - continue; - - fbconfig = fbconfigs[i]; - break; - } - - if(!visual_info) { - fprintf(stderr, "gsr error: gsr_gl_create_window failed: no appropriate visual found\n"); - XFree(fbconfigs); - return false; - } - - /* TODO: Core profile? GLX_CONTEXT_CORE_PROFILE_BIT_ARB. */ - /* TODO: Remove need for 4.2 when copy texture function has been removed. */ - int context_attribs[] = { - GLX_CONTEXT_MAJOR_VERSION_ARB, 4, - GLX_CONTEXT_MINOR_VERSION_ARB, 2, - GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB, - None - }; - - gl_context = self->glXCreateContextAttribsARB(self->dpy, fbconfig, NULL, True, context_attribs); - if(!gl_context) { - fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to create gl context\n"); - goto fail; - } - - colormap = XCreateColormap(self->dpy, DefaultRootWindow(self->dpy), visual_info->visual, AllocNone); - if(!colormap) { - fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to create x11 colormap\n"); - goto fail; - } - - XSetWindowAttributes window_attr; - window_attr.colormap = colormap; - - // TODO: Is there a way to remove the need to create a window? - window = XCreateWindow(self->dpy, DefaultRootWindow(self->dpy), 0, 0, 1, 1, 0, visual_info->depth, InputOutput, visual_info->visual, CWColormap, &window_attr); - - if(!window) { - fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to create gl window\n"); - goto fail; - } - - if(!self->glXMakeContextCurrent(self->dpy, window, window, gl_context)) { - fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to make gl context current\n"); - goto fail; - } - - self->fbconfigs = fbconfigs; - self->visual_info = visual_info; - self->colormap = colormap; - self->gl_context = gl_context; - self->window = window; - return true; - - fail: - if(window) - XDestroyWindow(self->dpy, window); - if(colormap) - XFreeColormap(self->dpy, colormap); - if(gl_context) - self->glXDestroyContext(self->dpy, gl_context); - if(visual_info) - XFree(visual_info); - XFree(fbconfigs); - return False; -} - -bool gsr_gl_load(gsr_gl *self, Display *dpy) { - memset(self, 0, sizeof(gsr_gl)); - self->dpy = dpy; - - dlerror(); /* clear */ - void *lib = dlopen("libGL.so.1", RTLD_LAZY); - if(!lib) { - fprintf(stderr, "gsr error: gsr_gl_load: failed to load libGL.so.1, error: %s\n", dlerror()); - return false; - } - - dlsym_assign optional_dlsym[] = { - { (void**)&self->glClearTexImage, "glClearTexImage" }, - { (void**)&self->glXSwapIntervalEXT, "glXSwapIntervalEXT" }, - { (void**)&self->glXSwapIntervalMESA, "glXSwapIntervalMESA" }, - { (void**)&self->glXSwapIntervalSGI, "glXSwapIntervalSGI" }, - - { NULL, NULL } - }; - - dlsym_load_list_optional(lib, optional_dlsym); - - dlsym_assign required_dlsym[] = { - { (void**)&self->glXCreatePixmap, "glXCreatePixmap" }, - { (void**)&self->glXDestroyPixmap, "glXDestroyPixmap" }, - { (void**)&self->glXBindTexImageEXT, "glXBindTexImageEXT" }, - { (void**)&self->glXReleaseTexImageEXT, "glXReleaseTexImageEXT" }, - { (void**)&self->glXChooseFBConfig, "glXChooseFBConfig" }, - { (void**)&self->glXGetVisualFromFBConfig, "glXGetVisualFromFBConfig" }, - { (void**)&self->glXCreateContextAttribsARB, "glXCreateContextAttribsARB" }, - { (void**)&self->glXMakeContextCurrent, "glXMakeContextCurrent" }, - { (void**)&self->glXDestroyContext, "glXDestroyContext" }, - { (void**)&self->glXSwapBuffers, "glXSwapBuffers" }, - - { (void**)&self->glGetError, "glGetError" }, - { (void**)&self->glGetString, "glGetString" }, - { (void**)&self->glClear, "glClear" }, - { (void**)&self->glGenTextures, "glGenTextures" }, - { (void**)&self->glDeleteTextures, "glDeleteTextures" }, - { (void**)&self->glBindTexture, "glBindTexture" }, - { (void**)&self->glTexParameteri, "glTexParameteri" }, - { (void**)&self->glGetTexLevelParameteriv, "glGetTexLevelParameteriv" }, - { (void**)&self->glTexImage2D, "glTexImage2D" }, - { (void**)&self->glCopyImageSubData, "glCopyImageSubData" }, - - { NULL, NULL } - }; - - if(!dlsym_load_list(lib, required_dlsym)) { - fprintf(stderr, "gsr error: gsr_gl_load failed: missing required symbols in libGL.so.1\n"); - dlclose(lib); - memset(self, 0, sizeof(gsr_gl)); - return false; - } - - if(!gsr_gl_create_window(self)) { - dlclose(lib); - memset(self, 0, sizeof(gsr_gl)); - return false; - } - - self->library = lib; - return true; -} - -bool gsr_gl_make_context_current(gsr_gl *self) { - return self->glXMakeContextCurrent(self->dpy, self->window, self->window, self->gl_context); -} - -void gsr_gl_unload(gsr_gl *self) { - if(self->window) { - XDestroyWindow(self->dpy, self->window); - self->window = None; - } - - if(self->colormap) { - XFreeColormap(self->dpy, self->colormap); - self->colormap = None; - } - - if(self->gl_context) { - self->glXDestroyContext(self->dpy, self->gl_context); - self->gl_context = NULL; - } - - if(self->visual_info) { - XFree(self->visual_info); - self->visual_info = NULL; - } - - if(self->fbconfigs) { - XFree(self->fbconfigs); - self->fbconfigs = NULL; - } - - if(self->library) { - dlclose(self->library); - memset(self, 0, sizeof(gsr_gl)); - } -} |