diff options
Diffstat (limited to 'src/window_texture.c')
| -rw-r--r-- | src/window_texture.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/src/window_texture.c b/src/window_texture.c deleted file mode 100644 index bf687c6..0000000 --- a/src/window_texture.c +++ /dev/null @@ -1,185 +0,0 @@ -#include "../include/window_texture.h" -#include <X11/extensions/Xcomposite.h> -#include <mgl/mgl.h> -#include <stdio.h> - -static int x11_supports_composite_named_window_pixmap(Display *display) { - int extension_major; - int extension_minor; - if(!XCompositeQueryExtension(display, &extension_major, &extension_minor)) - return 0; - - int major_version; - int minor_version; - return XCompositeQueryVersion(display, &major_version, &minor_version) && (major_version > 0 || minor_version >= 2); -} - -int window_texture_init(WindowTexture *window_texture, Display *display, Window window) { - window_texture->display = display; - window_texture->window = window; - window_texture->pixmap = None; - window_texture->glx_pixmap = None; - window_texture->texture_id = 0; - window_texture->redirected = 0; - - if(!x11_supports_composite_named_window_pixmap(display)) - return 1; - - XCompositeRedirectWindow(display, window, CompositeRedirectAutomatic); - window_texture->redirected = 1; - return window_texture_on_resize(window_texture); -} - -static void window_texture_cleanup(WindowTexture *self, int delete_texture) { - mgl_context *context = mgl_get_context(); - - if(delete_texture && self->texture_id) { - context->gl.glDeleteTextures(1, &self->texture_id); - self->texture_id = 0; - } - - if(self->glx_pixmap) { - glXDestroyPixmap(self->display, self->glx_pixmap); - glXReleaseTexImageEXT(self->display, self->glx_pixmap, GLX_FRONT_EXT); - self->glx_pixmap = None; - } - - if(self->pixmap) { - XFreePixmap(self->display, self->pixmap); - self->pixmap = None; - } -} - -void window_texture_deinit(WindowTexture *self) { - if(self->redirected) { - XCompositeUnredirectWindow(self->display, self->window, CompositeRedirectAutomatic); - self->redirected = 0; - } - window_texture_cleanup(self, 1); -} - -int window_texture_on_resize(WindowTexture *self) { - mgl_context *context = mgl_get_context(); - window_texture_cleanup(self, 0); - - int result = 0; - GLXFBConfig *configs = NULL; - Pixmap pixmap = None; - GLXPixmap glx_pixmap = None; - GLuint texture_id = 0; - int glx_pixmap_bound = 0; - - const int pixmap_config[] = { - GLX_BIND_TO_TEXTURE_RGB_EXT, True, - GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT | GLX_WINDOW_BIT, - GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT, - /*GLX_BIND_TO_MIPMAP_TEXTURE_EXT, True,*/ - GLX_BUFFER_SIZE, 24, - GLX_RED_SIZE, 8, - GLX_GREEN_SIZE, 8, - GLX_BLUE_SIZE, 8, - GLX_ALPHA_SIZE, 0, - None - }; - - const int pixmap_attribs[] = { - GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT, - GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT, - /*GLX_MIPMAP_TEXTURE_EXT, True,*/ - None - }; - - XWindowAttributes attr; - if (!XGetWindowAttributes(self->display, self->window, &attr)) { - fprintf(stderr, "Failed to get window attributes\n"); - return 1; - } - - GLXFBConfig config; - int c; - configs = glXChooseFBConfig(self->display, 0, pixmap_config, &c); - if(!configs) { - fprintf(stderr, "Failed to choose fb config\n"); - return 1; - } - - int found = 0; - for (int i = 0; i < c; i++) { - config = configs[i]; - XVisualInfo *visual = glXGetVisualFromFBConfig(self->display, config); - if (!visual) - continue; - - if (attr.depth != visual->depth) { - XFree(visual); - continue; - } - XFree(visual); - found = 1; - break; - } - - if(!found) { - fprintf(stderr, "No matching fb config found\n"); - result = 1; - goto cleanup; - } - - pixmap = XCompositeNameWindowPixmap(self->display, self->window); - if(!pixmap) { - result = 2; - goto cleanup; - } - - glx_pixmap = glXCreatePixmap(self->display, config, pixmap, pixmap_attribs); - if(!glx_pixmap) { - result = 3; - goto cleanup; - } - - if(self->texture_id == 0) { - context->gl.glGenTextures(1, &texture_id); - if(texture_id == 0) { - result = 4; - goto cleanup; - } - context->gl.glBindTexture(GL_TEXTURE_2D, texture_id); - } else { - context->gl.glBindTexture(GL_TEXTURE_2D, self->texture_id); - } - - glXBindTexImageEXT(self->display, glx_pixmap, GLX_FRONT_EXT, NULL); - glx_pixmap_bound = 1; - - context->gl.glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE ); - context->gl.glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE ); - context->gl.glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); - context->gl.glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); - - /* - float fLargest = 0.0f; - glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &fLargest); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, fLargest); - */ - - context->gl.glBindTexture(GL_TEXTURE_2D, 0); - - XFree(configs); - self->pixmap = pixmap; - self->glx_pixmap = glx_pixmap; - if(texture_id != 0) - self->texture_id = texture_id; - return 0; - - cleanup: - if(texture_id != 0) context->gl.glDeleteTextures(1, &texture_id); - if(glx_pixmap) glXDestroyPixmap(self->display, glx_pixmap); - if(glx_pixmap_bound) glXReleaseTexImageEXT(self->display, glx_pixmap, GLX_FRONT_EXT); - if(pixmap) XFreePixmap(self->display, pixmap); - if(configs) XFree(configs); - return result; -} - -GLuint window_texture_get_opengl_texture_id(WindowTexture *self) { - return self->texture_id; -} |