diff options
Diffstat (limited to 'src/gl-renderer.c')
| -rw-r--r-- | src/gl-renderer.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/gl-renderer.c b/src/gl-renderer.c index d18e1245..42859107 100644 --- a/src/gl-renderer.c +++ b/src/gl-renderer.c @@ -128,6 +128,8 @@ struct gl_renderer { EGLContext egl_context; EGLConfig egl_config; + GLuint fbo; + struct wl_array vertices; struct wl_array vtxcnt; @@ -693,6 +695,54 @@ out: pixman_region32_fini(&repaint); } +static int +gl_renderer_read_surface_pixels(struct weston_surface *es, + pixman_format_code_t format, void *pixels, + int x, int y, int width, int height) +{ + struct weston_buffer *buffer = es->buffer_ref.buffer; + struct weston_compositor *ec = es->compositor; + struct gl_renderer *gr = get_renderer(ec); + struct gl_surface_state *gs = get_surface_state(es); + GLenum gl_format; + int size; + struct wl_shm_buffer *shm_buffer = NULL; + + switch (format) { + case PIXMAN_a8r8g8b8: + gl_format = GL_BGRA_EXT; + break; + case PIXMAN_a8b8g8r8: + gl_format = GL_RGBA; + break; + default: + return -1; + } + + if (buffer) { + shm_buffer = wl_shm_buffer_get(buffer->resource); + } + if (shm_buffer) { + size = buffer->width * 4 * buffer->height; + memcpy(pixels, wl_shm_buffer_get_data(shm_buffer), size); + } else { + if (gr->fbo == 0) + glGenFramebuffers(1, &gr->fbo); + glBindFramebuffer(GL_FRAMEBUFFER, gr->fbo); + glFramebufferTexture2D(GL_FRAMEBUFFER, + GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, + gs->textures[0], 0); + + glReadPixels(x, y, width, height, + gl_format, GL_UNSIGNED_BYTE, pixels); + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + } + + return 0; +} + static void repaint_views(struct weston_output *output, pixman_region32_t *damage) { @@ -2100,6 +2150,9 @@ gl_renderer_destroy(struct weston_compositor *ec) wl_signal_emit(&gr->destroy_signal, gr); + if (gr->fbo) + glDeleteFramebuffers(1, &gr->fbo); + if (gr->has_bind_display) gr->unbind_display(gr->egl_display, ec->wl_display); @@ -2314,6 +2367,7 @@ gl_renderer_create(struct weston_compositor *ec, EGLenum platform, return -1; gr->base.read_pixels = gl_renderer_read_pixels; + gr->base.read_surface_pixels = gl_renderer_read_surface_pixels; gr->base.repaint_output = gl_renderer_repaint_output; gr->base.flush_damage = gl_renderer_flush_damage; gr->base.attach = gl_renderer_attach; |