diff options
Diffstat (limited to 'libdimension/gl.c')
| -rw-r--r-- | libdimension/gl.c | 99 |
1 files changed, 19 insertions, 80 deletions
diff --git a/libdimension/gl.c b/libdimension/gl.c index a968d75..71d0194 100644 --- a/libdimension/gl.c +++ b/libdimension/gl.c @@ -29,9 +29,21 @@ #include <stdint.h> /** GL optimizer callback. */ -static void dmnsn_gl_optimizer_fn(const dmnsn_canvas *canvas, - dmnsn_canvas_optimizer optimizer, - size_t x, size_t y); +static void +dmnsn_gl_optimizer_fn(const dmnsn_canvas *canvas, + dmnsn_canvas_optimizer optimizer, size_t x, size_t y) +{ + GLushort *pixel = (GLushort *)optimizer.ptr + 4*(y*canvas->width + x); + dmnsn_color color = dmnsn_get_pixel(canvas, x, y); + color = dmnsn_remove_filter(color); + color = dmnsn_color_to_sRGB(color); + + /* Saturate R, G, and B to [0, UINT16_MAX] */ + pixel[0] = dmnsn_min(dmnsn_max(color.R, 0.0), 1.0)*UINT16_MAX; + pixel[1] = dmnsn_min(dmnsn_max(color.G, 0.0), 1.0)*UINT16_MAX; + pixel[2] = dmnsn_min(dmnsn_max(color.B, 0.0), 1.0)*UINT16_MAX; + pixel[3] = dmnsn_min(dmnsn_max(color.trans, 0.0), 1.0)*UINT16_MAX; +} /* Optimize canvas for GL drawing */ int @@ -87,38 +99,10 @@ dmnsn_gl_write_canvas(const dmnsn_canvas *canvas) color = dmnsn_color_to_sRGB(color); /* Saturate R, G, and B to [0, UINT16_MAX] */ - - if (color.R <= 0.0) { - pixel[0] = 0; - } else if (color.R >= 1.0) { - pixel[0] = UINT16_MAX; - } else { - pixel[0] = color.R*UINT16_MAX; - } - - if (color.G <= 0.0) { - pixel[1] = 0; - } else if (color.G >= 1.0) { - pixel[1] = UINT16_MAX; - } else { - pixel[1] = color.G*UINT16_MAX; - } - - if (color.B <= 0.0) { - pixel[2] = 0; - } else if (color.B >= 1.0) { - pixel[2] = UINT16_MAX; - } else { - pixel[2] = color.B*UINT16_MAX; - } - - if (color.trans <= 0.0) { - pixel[3] = 0; - } else if (color.trans >= 1.0) { - pixel[3] = UINT16_MAX; - } else { - pixel[3] = color.trans*UINT16_MAX; - } + pixel[0] = dmnsn_min(dmnsn_max(color.R, 0.0), 1.0)*UINT16_MAX; + pixel[1] = dmnsn_min(dmnsn_max(color.G, 0.0), 1.0)*UINT16_MAX; + pixel[2] = dmnsn_min(dmnsn_max(color.B, 0.0), 1.0)*UINT16_MAX; + pixel[3] = dmnsn_min(dmnsn_max(color.trans, 0.0), 1.0)*UINT16_MAX; } } @@ -163,48 +147,3 @@ dmnsn_gl_read_canvas(size_t x0, size_t y0, dmnsn_free(pixels); return canvas; } - -/* GL optimizer callback */ -static void -dmnsn_gl_optimizer_fn(const dmnsn_canvas *canvas, - dmnsn_canvas_optimizer optimizer, size_t x, size_t y) -{ - GLushort *pixel = (GLushort *)optimizer.ptr + 4*(y*canvas->width + x); - dmnsn_color color = dmnsn_get_pixel(canvas, x, y); - color = dmnsn_remove_filter(color); - color = dmnsn_color_to_sRGB(color); - - /* Saturate R, G, and B to [0, UINT16_MAX] */ - - if (color.R <= 0.0) { - pixel[0] = 0; - } else if (color.R >= 1.0) { - pixel[0] = UINT16_MAX; - } else { - pixel[0] = color.R*UINT16_MAX; - } - - if (color.G <= 0.0) { - pixel[1] = 0; - } else if (color.G >= 1.0) { - pixel[1] = UINT16_MAX; - } else { - pixel[1] = color.G*UINT16_MAX; - } - - if (color.B <= 0.0) { - pixel[2] = 0; - } else if (color.B >= 1.0) { - pixel[2] = UINT16_MAX; - } else { - pixel[2] = color.B*UINT16_MAX; - } - - if (color.trans <= 0.0) { - pixel[3] = 0; - } else if (color.trans >= 1.0) { - pixel[3] = UINT16_MAX; - } else { - pixel[3] = color.trans*UINT16_MAX; - } -} |