95 lines
3.9 KiB
C
95 lines
3.9 KiB
C
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/*
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* Copyright 2011-2019 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#ifndef BGFX_DEFINES_H_HEADER_GUARD
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#define BGFX_DEFINES_H_HEADER_GUARD
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$version
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$cflags
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/// Blend function separate.
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#define BGFX_STATE_BLEND_FUNC_SEPARATE(_srcRGB, _dstRGB, _srcA, _dstA) (UINT64_C(0) \
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| ( ( (uint64_t)(_srcRGB)|( (uint64_t)(_dstRGB)<<4) ) ) \
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| ( ( (uint64_t)(_srcA )|( (uint64_t)(_dstA )<<4) )<<8) \
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)
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/// Blend equation separate.
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#define BGFX_STATE_BLEND_EQUATION_SEPARATE(_equationRGB, _equationA) ( (uint64_t)(_equationRGB)|( (uint64_t)(_equationA)<<3) )
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/// Blend function.
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#define BGFX_STATE_BLEND_FUNC(_src, _dst) BGFX_STATE_BLEND_FUNC_SEPARATE(_src, _dst, _src, _dst)
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/// Blend equation.
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#define BGFX_STATE_BLEND_EQUATION(_equation) BGFX_STATE_BLEND_EQUATION_SEPARATE(_equation, _equation)
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/// Utility predefined blend modes.
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/// Additive blending.
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#define BGFX_STATE_BLEND_ADD (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE) \
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)
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/// Alpha blend.
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#define BGFX_STATE_BLEND_ALPHA (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA) \
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)
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/// Selects darker color of blend.
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#define BGFX_STATE_BLEND_DARKEN (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE) \
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| BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_MIN) \
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)
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/// Selects lighter color of blend.
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#define BGFX_STATE_BLEND_LIGHTEN (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE) \
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| BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_MAX) \
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)
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/// Multiplies colors.
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#define BGFX_STATE_BLEND_MULTIPLY (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_DST_COLOR, BGFX_STATE_BLEND_ZERO) \
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)
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/// Opaque pixels will cover the pixels directly below them without any math or algorithm applied to them.
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#define BGFX_STATE_BLEND_NORMAL (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_INV_SRC_ALPHA) \
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)
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/// Multiplies the inverse of the blend and base colors.
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#define BGFX_STATE_BLEND_SCREEN (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_INV_SRC_COLOR) \
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)
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/// Decreases the brightness of the base color based on the value of the blend color.
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#define BGFX_STATE_BLEND_LINEAR_BURN (0 \
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| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_DST_COLOR, BGFX_STATE_BLEND_INV_DST_COLOR) \
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| BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_SUB) \
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)
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///
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#define BGFX_STATE_BLEND_FUNC_RT_x(_src, _dst) (0 \
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| ( (uint32_t)( (_src)>>BGFX_STATE_BLEND_SHIFT) \
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| ( (uint32_t)( (_dst)>>BGFX_STATE_BLEND_SHIFT)<<4) ) \
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)
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///
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#define BGFX_STATE_BLEND_FUNC_RT_xE(_src, _dst, _equation) (0 \
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| BGFX_STATE_BLEND_FUNC_RT_x(_src, _dst) \
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| ( (uint32_t)( (_equation)>>BGFX_STATE_BLEND_EQUATION_SHIFT)<<8) \
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)
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#define BGFX_STATE_BLEND_FUNC_RT_1(_src, _dst) (BGFX_STATE_BLEND_FUNC_RT_x(_src, _dst)<< 0)
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#define BGFX_STATE_BLEND_FUNC_RT_2(_src, _dst) (BGFX_STATE_BLEND_FUNC_RT_x(_src, _dst)<<11)
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#define BGFX_STATE_BLEND_FUNC_RT_3(_src, _dst) (BGFX_STATE_BLEND_FUNC_RT_x(_src, _dst)<<22)
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#define BGFX_STATE_BLEND_FUNC_RT_1E(_src, _dst, _equation) (BGFX_STATE_BLEND_FUNC_RT_xE(_src, _dst, _equation)<< 0)
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#define BGFX_STATE_BLEND_FUNC_RT_2E(_src, _dst, _equation) (BGFX_STATE_BLEND_FUNC_RT_xE(_src, _dst, _equation)<<11)
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#define BGFX_STATE_BLEND_FUNC_RT_3E(_src, _dst, _equation) (BGFX_STATE_BLEND_FUNC_RT_xE(_src, _dst, _equation)<<22)
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#endif // BGFX_DEFINES_H_HEADER_GUARD
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