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Remove cairo dependency, write raw pixels

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emersion 2017-10-07 19:01:11 +02:00
parent b27b6cd69c
commit a87f016017
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GPG key ID: 0FDE7BE0E88F5E48
4 changed files with 37 additions and 14 deletions
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21
types/wlr_output.c
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@ -8,7 +8,6 @@
#include <wlr/util/list.h>
#include <wlr/util/log.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/render.h>
@ -252,9 +251,19 @@ uint16_t wlr_output_get_gamma_size(struct wlr_output *output) {
return output->impl->get_gamma_size(output);
}
void wlr_output_read_pixels(struct wlr_output *output, void *out_data) {
// TODO: is wlr_output_make_current required?
wlr_output_make_current(output);
glReadPixels(0, 0, output->width, output->height, GL_BGRA_EXT,
GL_UNSIGNED_BYTE, out_data);
static void rgba_to_argb(uint32_t *data, size_t height, size_t stride) {
size_t n = height*stride/4;
for (size_t i = 0; i < n; ++i) {
uint32_t v = data[i];
uint32_t rgb = (v & 0xffffff00) >> 8;
uint32_t a = v & 0x000000ff;
data[i] = rgb | (a << 24);
}
}
void wlr_output_read_pixels(struct wlr_output *output, void *out_data) {
wlr_output_make_current(output);
glReadPixels(0, 0, output->width, output->height, GL_RGBA, GL_UNSIGNED_BYTE,
out_data);
rgba_to_argb(out_data, output->height, output->width*4);
}