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@@ -8,12 +8,12 @@
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#define BGFX_API_VERSION UINT32_C(46)
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-///
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+/// Color RGB/alpha/depth write. When it's not specified write will be disabled.
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#define BGFX_STATE_RGB_WRITE UINT64_C(0x0000000000000001) //!< Enable RGB write.
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#define BGFX_STATE_ALPHA_WRITE UINT64_C(0x0000000000000002) //!< Enable alpha write.
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#define BGFX_STATE_DEPTH_WRITE UINT64_C(0x0000000000000004) //!< Enable depth write.
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-///
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+/// Depth test state. When `BGFX_STATE_DEPTH_` is not specified depth test will be disabled.
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#define BGFX_STATE_DEPTH_TEST_LESS UINT64_C(0x0000000000000010) //!< Enable depth test, less.
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#define BGFX_STATE_DEPTH_TEST_LEQUAL UINT64_C(0x0000000000000020) //!< Enable depth test, less or equal.
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#define BGFX_STATE_DEPTH_TEST_EQUAL UINT64_C(0x0000000000000030) //!< Enable depth test, equal.
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@@ -56,6 +56,7 @@
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#define BGFX_STATE_BLEND_INDEPENDENT UINT64_C(0x0000000400000000) //!< Enable blend independent.
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#define BGFX_STATE_BLEND_ALPHA_TO_COVERAGE UINT64_C(0x0000000800000000) //!< Enable alpha to coverage.
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+/// Cull state. When `BGFX_STATE_CULL_*` is not specified culling will be disabled.
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#define BGFX_STATE_CULL_CW UINT64_C(0x0000001000000000) //!< Cull clockwise triangles.
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#define BGFX_STATE_CULL_CCW UINT64_C(0x0000002000000000) //!< Cull counter-clockwise triangles.
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#define BGFX_STATE_CULL_SHIFT 36 //!< Culling mode bit shift.
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@@ -100,29 +101,71 @@
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| BGFX_STATE_MSAA \
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)
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+/// Alpha reference value.
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#define BGFX_STATE_ALPHA_REF(_ref) ( ( (uint64_t)(_ref )<<BGFX_STATE_ALPHA_REF_SHIFT )&BGFX_STATE_ALPHA_REF_MASK)
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+
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+/// Point size value.
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#define BGFX_STATE_POINT_SIZE(_size) ( ( (uint64_t)(_size)<<BGFX_STATE_POINT_SIZE_SHIFT)&BGFX_STATE_POINT_SIZE_MASK)
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-///
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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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-///
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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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+
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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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-#define BGFX_STATE_BLEND_ADD (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE ) )
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-#define BGFX_STATE_BLEND_ALPHA (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA) )
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-#define BGFX_STATE_BLEND_DARKEN (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE ) | BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_MIN) )
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-#define BGFX_STATE_BLEND_LIGHTEN (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE ) | BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_MAX) )
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-#define BGFX_STATE_BLEND_MULTIPLY (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_DST_COLOR, BGFX_STATE_BLEND_ZERO ) )
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-#define BGFX_STATE_BLEND_NORMAL (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_INV_SRC_ALPHA) )
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-#define BGFX_STATE_BLEND_SCREEN (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_INV_SRC_COLOR) )
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-#define BGFX_STATE_BLEND_LINEAR_BURN (BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_DST_COLOR, BGFX_STATE_BLEND_INV_DST_COLOR) | BGFX_STATE_BLEND_EQUATION(BGFX_STATE_BLEND_EQUATION_SUB) )
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+/// Utility predefined blend modes.
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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Branimir Karadžić