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screencopy: add support for frame flags

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emersion 2018-06-23 14:02:43 +01:00
parent bd8be19b79
commit 2b9cbaddf3
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GPG key ID: 0FDE7BE0E88F5E48
9 changed files with 77 additions and 32 deletions
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28
render/gles2/renderer.c
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@ -250,9 +250,9 @@ static int gles2_get_dmabuf_modifiers(struct wlr_renderer *wlr_renderer,
}
static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
enum wl_shm_format wl_fmt, 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) {
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);
const struct wlr_gles2_pixel_format *fmt = get_gles2_format_from_wl(wl_fmt);
@ -266,12 +266,24 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
// Make sure any pending drawing is finished before we try to read it
glFinish();
// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
// the lines out row by row
unsigned char *p = data + dst_y * stride;
for (size_t i = src_y; i < src_y + height; ++i) {
glReadPixels(src_x, src_y + height - i - 1, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * fmt->bpp / 8);
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);
*flags = WLR_RENDERER_READ_PIXELS_Y_INVERT;
} else {
// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
// the lines out row by row
for (size_t i = src_y; i < src_y + height; ++i) {
glReadPixels(src_x, src_y + height - i - 1, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * fmt->bpp / 8);
}
if (flags != NULL) {
*flags = 0;
}
}
POP_GLES2_DEBUG;