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Fix read screen pixels #26

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Fix read screen pixels #26

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1d27b15
Fix read screen pixels
holywyvern Aug 25, 2020
b232ebd
fix variable
holywyvern Aug 25, 2020
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13 changes: 11 additions & 2 deletions src/rayfork-gfx-backend-opengl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2871,11 +2871,20 @@ RF_API void rf_gfx_read_screen_pixels(rf_color* dst, int width, int height)
{
for (rf_int x = 0; x < width; x++)
{
dst[((height - 1) - y) * width + x] = dst[(y * width) + x]; // Flip line
int i = ((height - 1) - y) * width + x;
int j = (y * width) + x;

// only flip screen pixels once
if (y > height / 2)
{
rf_color temp = dst[i];
dst[i] = dst[j];
dst[j] = temp;
}

// Set alpha component value to 255 (no trasparent image retrieval)
// NOTE: Alpha value has already been applied to RGB in framebuffer, we don't need it!
if (((x + 1) % 4) == 0) dst[((height - 1) - y) * width + x].a = 255;
if(dst[j].a == 0) dst[j].a = 255;
}
}
}
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