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screencopy: add capture_output_region support

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emersion 2018-06-23 15:12:17 +01:00
parent 2b9cbaddf3
commit bf7560b7cd
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GPG key ID: 0FDE7BE0E88F5E48
4 changed files with 93 additions and 27 deletions
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11
render/gles2/renderer.c
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@ -253,7 +253,8 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
enum wl_shm_format wl_fmt, uint32_t *flags, uint32_t stride,
uint32_t width, uint32_t height, uint32_t src_x, uint32_t src_y,
uint32_t dst_x, uint32_t dst_y, void *data) {
gles2_get_renderer_in_context(wlr_renderer);
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
const struct wlr_gles2_pixel_format *fmt = get_gles2_format_from_wl(wl_fmt);
if (fmt == NULL) {
@ -266,13 +267,15 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
// Make sure any pending drawing is finished before we try to read it
glFinish();
glGetError(); // Clear the error flag
unsigned char *p = data + dst_y * stride;
uint32_t pack_stride = width * fmt->bpp / 8;
if (pack_stride == stride && dst_x == 0 && flags != NULL) {
// Under these particular conditions, we can read the pixels with only
// one glReadPixels call
glReadPixels(src_x, src_y, width, height, fmt->gl_format,
fmt->gl_type, p);
glReadPixels(src_x, renderer->viewport_height - height - src_y,
width, height, fmt->gl_format, fmt->gl_type, p);
*flags = WLR_RENDERER_READ_PIXELS_Y_INVERT;
} else {
// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
@ -288,7 +291,7 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
POP_GLES2_DEBUG;
return true;
return (glGetError() == GL_NO_ERROR);
}
static bool gles2_format_supported(struct wlr_renderer *wlr_renderer,