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render/gles2: fix calculation for partial gles2 pixel read (#1809)

This commit is contained in:
Filip Sandborg 2019-08-31 22:00:52 +02:00 committed by Simon Ser
parent a20bb38763
commit 734c64a6cc
1 changed files with 2 additions and 2 deletions
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4
render/gles2/renderer.c
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@ -317,8 +317,8 @@ static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
} 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,
for (size_t i = 0; i < height; ++i) {
glReadPixels(src_x, renderer->viewport_height - src_y - i - 1, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * fmt->bpp / 8);
}
if (flags != NULL) {