From 6a6bb703bce2d844175950ede4bda5d06dc5a8ae Mon Sep 17 00:00:00 2001 From: dec05eba Date: Mon, 17 Oct 2022 02:55:59 +0200 Subject: wip intel --- src/egl.c | 275 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 src/egl.c (limited to 'src/egl.c') diff --git a/src/egl.c b/src/egl.c new file mode 100644 index 0000000..05819c2 --- /dev/null +++ b/src/egl.c @@ -0,0 +1,275 @@ +#include "../include/egl.h" +#include "../include/library_loader.h" +#include + +static bool gsr_egl_create_window(gsr_egl *self) { + EGLDisplay egl_display = NULL; + EGLConfig ecfg; + int32_t num_config; + EGLSurface egl_surface; + EGLContext egl_context; + + int32_t attr[] = { + EGL_BUFFER_SIZE, 24, + EGL_RENDERABLE_TYPE, + EGL_OPENGL_ES2_BIT, + EGL_NONE + }; + + int32_t ctxattr[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + + // TODO: Is there a way to remove the need to create a window? + Window window = XCreateWindow(self->dpy, DefaultRootWindow(self->dpy), 0, 0, 1, 1, 0, CopyFromParent, InputOutput, CopyFromParent, 0, NULL); + + if(!window) { + fprintf(stderr, "gsr error: gsr_gl_create_window failed: failed to create gl window\n"); + goto fail; + } + + egl_display = self->eglGetDisplay(self->dpy); + if(!egl_display) { + fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglGetDisplay failed\n"); + return false; + } + + if(!self->eglInitialize(egl_display, NULL, NULL)) { + fprintf(stderr, "gsr error: gsr_egl_create_window failed: eglInitialize failed\n"); + return false; + } + + // TODO: Cleanup ecfg? + if (!self->eglChooseConfig( egl_display, attr, &ecfg, 1, &num_config ) ) { + //cerr << "Failed to choose config (eglError: " << eglGetError() << ")" << endl; + return false; + } + + if ( num_config != 1 ) { + //cerr << "Didn't get exactly one config, but " << num_config << endl; + return false; + } + + egl_surface = self->eglCreateWindowSurface ( egl_display, ecfg, (EGLNativeWindowType)window, NULL ); + if ( !egl_surface ) { + //cerr << "Unable to create EGL surface (eglError: " << eglGetError() << ")" << endl; + return false; + } + + //// egl-contexts collect all state descriptions needed required for operation + egl_context = self->eglCreateContext ( egl_display, ecfg, NULL, ctxattr ); + if ( !egl_context ) { + //cerr << "Unable to create EGL context (eglError: " << eglGetError() << ")" << endl; + return false; + } + + //// associate the egl-context with the egl-surface + self->eglMakeCurrent( egl_display, egl_surface, egl_surface, egl_context ); + + self->egl_display = egl_display; + self->egl_surface = egl_surface; + self->egl_context = egl_context; + self->window = window; + return true; + + fail: + // TODO: + /* + 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; +} + +static bool gsr_egl_load_egl(gsr_egl *self, void *library) { + dlsym_assign required_dlsym[] = { + { (void**)&self->eglGetDisplay, "eglGetDisplay" }, + { (void**)&self->eglInitialize, "eglInitialize" }, + { (void**)&self->eglChooseConfig, "eglChooseConfig" }, + { (void**)&self->eglCreateWindowSurface, "eglCreateWindowSurface" }, + { (void**)&self->eglCreateContext, "eglCreateContext" }, + { (void**)&self->eglMakeCurrent, "eglMakeCurrent" }, + { (void**)&self->eglCreatePixmapSurface, "eglCreatePixmapSurface" }, + { (void**)&self->eglCreateImage, "eglCreateImage" }, // TODO: eglCreateImageKHR + { (void**)&self->eglBindTexImage, "eglBindTexImage" }, + { (void**)&self->eglSwapInterval, "eglSwapInterval" }, + { (void**)&self->eglSwapBuffers, "eglSwapBuffers" }, + { (void**)&self->eglGetProcAddress, "eglGetProcAddress" }, + + { NULL, NULL } + }; + + if(!dlsym_load_list(library, required_dlsym)) { + fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libEGL.so.1\n"); + return false; + } + + return true; +} + +static bool gsr_egl_mesa_load_egl(gsr_egl *self) { + self->eglExportDMABUFImageQueryMESA = self->eglGetProcAddress("eglExportDMABUFImageQueryMESA"); + self->eglExportDMABUFImageMESA = self->eglGetProcAddress("eglExportDMABUFImageMESA"); + self->glEGLImageTargetTexture2DOES = self->eglGetProcAddress("glEGLImageTargetTexture2DOES"); + + if(!self->eglExportDMABUFImageQueryMESA) { + fprintf(stderr, "could not find eglExportDMABUFImageQueryMESA\n"); + return false; + } + + if(!self->eglExportDMABUFImageMESA) { + fprintf(stderr, "could not find eglExportDMABUFImageMESA\n"); + return false; + } + + if(!self->glEGLImageTargetTexture2DOES) { + fprintf(stderr, "could not find glEGLImageTargetTexture2DOES\n"); + return false; + } + + return true; +} + +static bool gsr_egl_load_gl(gsr_egl *self, void *library) { + dlsym_assign required_dlsym[] = { + { (void**)&self->glGetError, "glGetError" }, + { (void**)&self->glGetString, "glGetString" }, + { (void**)&self->glClear, "glClear" }, + { (void**)&self->glClearColor, "glClearColor" }, + { (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" }, + { (void**)&self->glGenFramebuffers, "glGenFramebuffers" }, + { (void**)&self->glBindFramebuffer, "glBindFramebuffer" }, + { (void**)&self->glViewport, "glViewport" }, + { (void**)&self->glFramebufferTexture2D, "glFramebufferTexture2D" }, + { (void**)&self->glDrawBuffers, "glDrawBuffers" }, + { (void**)&self->glCheckFramebufferStatus, "glCheckFramebufferStatus" }, + { (void**)&self->glBindBuffer, "glBindBuffer" }, + { (void**)&self->glGenBuffers, "glGenBuffers" }, + { (void**)&self->glBufferData, "glBufferData" }, + { (void**)&self->glGetUniformLocation, "glGetUniformLocation" }, + { (void**)&self->glGenVertexArrays, "glGenVertexArrays" }, + { (void**)&self->glBindVertexArray, "glBindVertexArray" }, + { (void**)&self->glCreateProgram, "glCreateProgram" }, + { (void**)&self->glCreateShader, "glCreateShader" }, + { (void**)&self->glAttachShader, "glAttachShader" }, + { (void**)&self->glBindAttribLocation, "glBindAttribLocation" }, + { (void**)&self->glCompileShader, "glCompileShader" }, + { (void**)&self->glLinkProgram, "glLinkProgram" }, + { (void**)&self->glShaderSource, "glShaderSource" }, + { (void**)&self->glUseProgram, "glUseProgram" }, + { (void**)&self->glGetProgramInfoLog, "glGetProgramInfoLog" }, + { (void**)&self->glGetShaderiv, "glGetShaderiv" }, + { (void**)&self->glGetShaderInfoLog, "glGetShaderInfoLog" }, + { (void**)&self->glGetShaderSource, "glGetShaderSource" }, + { (void**)&self->glDeleteProgram, "glDeleteProgram" }, + { (void**)&self->glDeleteShader, "glDeleteShader" }, + { (void**)&self->glGetProgramiv, "glGetProgramiv" }, + { (void**)&self->glVertexAttribPointer, "glVertexAttribPointer" }, + { (void**)&self->glEnableVertexAttribArray, "glEnableVertexAttribArray" }, + { (void**)&self->glDrawArrays, "glDrawArrays" }, + { (void**)&self->glReadBuffer, "glReadBuffer" }, + { (void**)&self->glReadPixels, "glReadPixels" }, + + { NULL, NULL } + }; + + if(!dlsym_load_list(library, required_dlsym)) { + fprintf(stderr, "gsr error: gsr_egl_load failed: missing required symbols in libGL.so.1\n"); + return false; + } + + return true; +} + +bool gsr_egl_load(gsr_egl *self, Display *dpy) { + memset(self, 0, sizeof(gsr_egl)); + self->dpy = dpy; + + dlerror(); /* clear */ + void *egl_lib = dlopen("libEGL.so.1", RTLD_LAZY); + if(!egl_lib) { + fprintf(stderr, "gsr error: gsr_egl_load: failed to load libEGL.so.1, error: %s\n", dlerror()); + return false; + } + + void *gl_lib = dlopen("libGL.so.1", RTLD_LAZY); + if(!egl_lib) { + fprintf(stderr, "gsr error: gsr_egl_load: failed to load libGL.so.1, error: %s\n", dlerror()); + dlclose(egl_lib); + memset(self, 0, sizeof(gsr_egl)); + return false; + } + + if(!gsr_egl_load_egl(self, egl_lib)) { + dlclose(egl_lib); + dlclose(gl_lib); + memset(self, 0, sizeof(gsr_egl)); + return false; + } + + if(!gsr_egl_load_gl(self, gl_lib)) { + dlclose(egl_lib); + dlclose(gl_lib); + memset(self, 0, sizeof(gsr_egl)); + return false; + } + + if(!gsr_egl_mesa_load_egl(self)) { + dlclose(egl_lib); + dlclose(gl_lib); + memset(self, 0, sizeof(gsr_egl)); + return false; + } + + if(!gsr_egl_create_window(self)) { + dlclose(egl_lib); + dlclose(gl_lib); + memset(self, 0, sizeof(gsr_egl)); + return false; + } + + self->egl_library = egl_lib; + self->gl_library = gl_lib; + return true; +} + +bool gsr_egl_make_context_current(gsr_egl *self) { + // TODO: + return true; + //return self->glXMakeContextCurrent(self->dpy, self->window, self->window, self->gl_context); +} + +void gsr_egl_unload(gsr_egl *self) { + // TODO: Cleanup of egl resources + + if(self->window) { + XDestroyWindow(self->dpy, self->window); + self->window = None; + } + + if(self->egl_library) { + dlclose(self->egl_library); + self->egl_library = NULL; + } + + if(self->gl_library) { + dlclose(self->gl_library); + self->gl_library = NULL; + } + + memset(self, 0, sizeof(gsr_egl)); +} -- cgit v1.2.3