77ed264714
This is a function that's meant to be used whenever both color states of the shader are equal. In that case no colorspace conversion code needs to be created and shaders can be shared.
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
#pragma once
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#include "gskgputypesprivate.h"
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#include "gdk/gdkcolorstateprivate.h"
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#define COLOR_SPACE_OUTPUT_PREMULTIPLIED (1u << 2)
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#define COLOR_SPACE_ALT_PREMULTIPLIED (1u << 3)
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#define COLOR_SPACE_OUTPUT_SHIFT 8u
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#define COLOR_SPACE_ALT_SHIFT 16u
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#define COLOR_SPACE_COLOR_STATE_MASK 0xFFu
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static inline GskGpuColorStates
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gsk_gpu_color_states_create_equal (gboolean output_is_premultiplied,
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gboolean alt_is_premultiplied)
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{
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/* We use ID 0 here for the colorspaces - if that ever becomes an issue
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* that it maps to SRGB, we need to invent something */
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return (output_is_premultiplied ? COLOR_SPACE_OUTPUT_PREMULTIPLIED : 0) |
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(alt_is_premultiplied ? COLOR_SPACE_ALT_PREMULTIPLIED : 0);
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}
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static inline GskGpuColorStates
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gsk_gpu_color_states_create (GdkColorState *output_color_state,
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gboolean output_is_premultiplied,
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GdkColorState *alt_color_state,
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gboolean alt_is_premultiplied)
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{
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g_assert (GDK_IS_DEFAULT_COLOR_STATE (output_color_state));
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g_assert (GDK_IS_DEFAULT_COLOR_STATE (alt_color_state));
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if (gdk_color_state_equal (output_color_state, alt_color_state))
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return gsk_gpu_color_states_create_equal (output_is_premultiplied, alt_is_premultiplied);
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return (GDK_DEFAULT_COLOR_STATE_ID (output_color_state) << COLOR_SPACE_OUTPUT_SHIFT) |
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(output_is_premultiplied ? COLOR_SPACE_OUTPUT_PREMULTIPLIED : 0) |
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(GDK_DEFAULT_COLOR_STATE_ID (alt_color_state) << COLOR_SPACE_ALT_SHIFT) |
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(alt_is_premultiplied ? COLOR_SPACE_ALT_PREMULTIPLIED : 0);
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}
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static inline GdkColorState *
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gsk_gpu_color_states_get_output (GskGpuColorStates self)
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{
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return ((GdkColorState *) &gdk_default_color_states[(self >> COLOR_SPACE_OUTPUT_SHIFT) & COLOR_SPACE_COLOR_STATE_MASK]);
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}
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static inline gboolean
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gsk_gpu_color_states_is_output_premultiplied (GskGpuColorStates self)
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{
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return !!(self & COLOR_SPACE_OUTPUT_PREMULTIPLIED);
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}
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static inline GdkColorState *
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gsk_gpu_color_states_get_alt (GskGpuColorStates self)
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{
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return ((GdkColorState *) &gdk_default_color_states[(self >> COLOR_SPACE_ALT_SHIFT) & COLOR_SPACE_COLOR_STATE_MASK]);
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}
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static inline gboolean
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gsk_gpu_color_states_is_alt_premultiplied (GskGpuColorStates self)
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{
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return !!(self & COLOR_SPACE_ALT_PREMULTIPLIED);
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}
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#define DEFAULT_COLOR_STATES (gsk_gpu_color_states_create (GDK_COLOR_STATE_SRGB, TRUE, GDK_COLOR_STATE_SRGB, TRUE))
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