219 lines
10 KiB
C++
219 lines
10 KiB
C++
// complements F3DEX2.inc
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scope CC {
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// the color combiner computes the equation: out = (a - b) * c + d
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// it uses this equation for both color (rgb) and alpha channels.
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// the alpha channel differs in that it uses a different set of inputs.
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// the color combiner can be used in one-cycle or two-cycle mode.
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// the second cycle can use the first cycle's outputs as inputs.
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// using texels requires two-cycle mode regardless of settings.
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// color combiner arguments:
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// source | RGB | Alpha | official name
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// | (a - b)* c + d | (A - B)* C + D |
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// CC.COLOR_OUT | 0 0 0 0 | --- --- --- --- | COMBINED
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// CC.COLOR_TEXEL_0 | 1 1 1 1 | --- --- --- --- | TEXEL0
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// CC.COLOR_TEXEL_1 | 2 2 2 2 | --- --- --- --- | TEXEL1
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// CC.COLOR_PRIM | 3 3 3 3 | --- --- --- --- | PRIMITIVE
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// CC.COLOR_SHADE | 4 4 4 4 | --- --- --- --- | SHADE
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// CC.COLOR_ENV | 5 5 5 5 | --- --- --- --- | ENVIRONMENT
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// CC.KEY_CENTER | --- 6 --- --- | --- --- --- --- | CENTER
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// CC.KEY_SCALE | --- --- 6 --- | --- --- --- --- | SCALE
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// CC.ALPHA_OUT | --- --- 7 --- | 0 0 --- 0 | COMBINED_ALPHA
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// CC.ALPHA_TEXEL_0 | --- --- 8 --- | 1 1 1 1 | TEXEL0_ALPHA
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// CC.ALPHA_TEXEL_1 | --- --- 9 --- | 2 2 2 2 | TEXEL1_ALPHA
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// CC.ALPHA_PRIM | --- --- 10 --- | 3 3 3 3 | PRIMITIVE_ALPHA
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// CC.ALPHA_SHADE | --- --- 11 --- | 4 4 4 4 | SHADE_ALPHA
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// CC.ALPHA_ENV | --- --- 12 --- | 5 5 5 5 | ENV_ALPHA
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// CC.LOD | --- --- 13 --- | --- --- 0 --- | LOD_FRACTION
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// CC.PRIM_LOD | --- --- 14 --- | --- --- 6 --- | PRIM_LOD_FRAC
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// CC.NOISE | 7 --- --- --- | --- --- --- --- | NOISE
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// CC.K4 | --- 7 --- --- | --- --- --- --- | K4
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// CC.K5 | --- --- 15 --- | --- --- --- --- | K5
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// CC.CONST_1 | 6 --- --- 6 | 6 6 --- 6 | 1
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// CC.CONST_0 | 8+ 8+ 16+ 7 | 7 7 7 7 | 0
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// note that these enum values *do not* correspond to hardware values.
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// the hardware values vary across arguments, as shown in the table above.
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constant COLOR_OUT(-1)
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constant COLOR_TEXEL_0(-2)
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constant COLOR_TEXEL_1(-3)
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constant COLOR_PRIM(-4)
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constant COLOR_SHADE(-5)
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constant COLOR_ENV(-6)
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constant KEY_CENTER(-7)
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constant KEY_SCALE(-8)
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constant ALPHA_OUT(-9)
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constant ALPHA_TEXEL_0(-10)
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constant ALPHA_TEXEL_1(-11)
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constant ALPHA_PRIM(-12)
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constant ALPHA_SHADE(-13)
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constant ALPHA_ENV(-14)
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constant LOD(-15)
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constant PRIM_LOD(-16)
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constant NOISE(-17)
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constant K4(-18)
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constant K5(-19)
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constant CONST_1(-20)
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constant CONST_0(-21)
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define c1a(0); define c1b(0); define c1c(0); define c1d(0) // cycle 1 color
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define c1A(0); define c1B(0); define c1C(0); define c1D(0) // cycle 1 alpha
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define c2a(0); define c2b(0); define c2c(0); define c2d(0) // cycle 2 color
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define c2A(0); define c2B(0); define c2C(0); define c2D(0) // cycle 2 alpha
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macro Cycle1Color(variable a, variable b, variable c, variable d) {
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global evaluate CC.c1a(a)
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global evaluate CC.c1b(b)
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global evaluate CC.c1c(c)
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global evaluate CC.c1d(d)
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}
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macro Cycle1Alpha(variable a, variable b, variable c, variable d) {
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global evaluate CC.c1A(a)
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global evaluate CC.c1B(b)
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global evaluate CC.c1C(c)
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global evaluate CC.c1D(d)
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}
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macro Cycle2Color(variable a, variable b, variable c, variable d) {
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global evaluate CC.c2a(a)
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global evaluate CC.c2b(b)
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global evaluate CC.c2c(c)
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global evaluate CC.c2d(d)
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}
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macro Cycle2Alpha(variable a, variable b, variable c, variable d) {
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global evaluate CC.c2A(a)
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global evaluate CC.c2B(b)
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global evaluate CC.c2C(c)
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global evaluate CC.c2D(d)
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}
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macro Cycle2From1() {
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// copy cycle 1's settings to cycle 2.
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global evaluate CC.c2a(c1a)
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global evaluate CC.c2b(c1b)
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global evaluate CC.c2c(c1c)
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global evaluate CC.c2d(c1d)
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global evaluate CC.c2A(c1A)
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global evaluate CC.c2B(c1B)
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global evaluate CC.c2C(c1C)
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global evaluate CC.c2D(c1D)
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}
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macro Cycle1From2() {
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// copy cycle 2's settings to cycle 1.
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global evaluate CC.c1a(c2a)
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global evaluate CC.c1b(c2b)
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global evaluate CC.c1c(c2c)
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global evaluate CC.c1d(c2d)
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global evaluate CC.c1A(c2A)
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global evaluate CC.c1B(c2B)
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global evaluate CC.c1C(c2C)
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global evaluate CC.c1D(c2D)
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}
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macro Commit() {
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// check and apply the current cycle settings.
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// this is gonna get ugly!
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variable c1a({CC.c1a}); variable c2a({CC.c2a})
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variable c1b({CC.c1b}); variable c2b({CC.c2b})
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variable c1c({CC.c1c}); variable c2c({CC.c2c})
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variable c1d({CC.c1d}); variable c2d({CC.c2d})
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variable c1A({CC.c1A}); variable c2A({CC.c2A})
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variable c1B({CC.c1B}); variable c2B({CC.c2B})
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variable c1C({CC.c1C}); variable c2C({CC.c2C})
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variable c1D({CC.c1D}); variable c2D({CC.c2D})
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if c1a <= CC.COLOR_OUT && c1a >= CC.COLOR_ENV {; variable c1a(CC.COLOR_OUT - c1a); }
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if c1b <= CC.COLOR_OUT && c1b >= CC.COLOR_ENV {; variable c1b(CC.COLOR_OUT - c1b); }
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if c1c <= CC.COLOR_OUT && c1c >= CC.COLOR_ENV {; variable c1c(CC.COLOR_OUT - c1c); }
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if c1d <= CC.COLOR_OUT && c1d >= CC.COLOR_ENV {; variable c1d(CC.COLOR_OUT - c1d); }
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if c2a <= CC.COLOR_OUT && c2a >= CC.COLOR_ENV {; variable c2a(CC.COLOR_OUT - c2a); }
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if c2b <= CC.COLOR_OUT && c2b >= CC.COLOR_ENV {; variable c2b(CC.COLOR_OUT - c2b); }
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if c2c <= CC.COLOR_OUT && c2c >= CC.COLOR_ENV {; variable c2c(CC.COLOR_OUT - c2c); }
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if c2d <= CC.COLOR_OUT && c2d >= CC.COLOR_ENV {; variable c2d(CC.COLOR_OUT - c2d); }
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// handle this before we handle the general range since it's different:
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if c1C == CC.LOD {; variable c1C(0); }
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if c2C == CC.LOD {; variable c2C(0); }
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if c1A <= CC.ALPHA_OUT && c1A >= CC.ALPHA_ENV {; variable c1A(CC.ALPHA_OUT - c1A); }
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if c1B <= CC.ALPHA_OUT && c1B >= CC.ALPHA_ENV {; variable c1B(CC.ALPHA_OUT - c1B); }
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if c1D <= CC.ALPHA_OUT && c1D >= CC.ALPHA_ENV {; variable c1D(CC.ALPHA_OUT - c1D); }
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if c2A <= CC.ALPHA_OUT && c2A >= CC.ALPHA_ENV {; variable c2A(CC.ALPHA_OUT - c2A); }
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if c2B <= CC.ALPHA_OUT && c2B >= CC.ALPHA_ENV {; variable c2B(CC.ALPHA_OUT - c2B); }
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if c2D <= CC.ALPHA_OUT && c2D >= CC.ALPHA_ENV {; variable c2D(CC.ALPHA_OUT - c2D); }
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if c1C <= CC.ALPHA_TEXEL_0 && c1C >= CC.ALPHA_ENV {; variable c1C(CC.ALPHA_OUT - c1C); }
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if c2C <= CC.ALPHA_TEXEL_0 && c2C >= CC.ALPHA_ENV {; variable c2C(CC.ALPHA_OUT - c2C); }
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if c1C == CC.PRIM_LOD {; variable c1C(6); }
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if c2C == CC.PRIM_LOD {; variable c2C(6); }
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if c1c <= CC.KEY_SCALE && c1c >= CC.PRIM_LOD {; variable c1c(CC.KEY_SCALE - c1c + 6); }
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if c2c <= CC.KEY_SCALE && c2c >= CC.PRIM_LOD {; variable c2c(CC.KEY_SCALE - c2c + 6); }
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if c1b == CC.KEY_CENTER {; variable c1b(6); }
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if c2b == CC.KEY_CENTER {; variable c2b(6); }
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if c1a == CC.NOISE {; variable c1a(7); }
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if c2a == CC.NOISE {; variable c2a(7); }
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if c1b == CC.K4 {; variable c1b(7); }
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if c2b == CC.K4 {; variable c2b(7); }
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if c1c == CC.K5 {; variable c1c(15); }
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if c2c == CC.K5 {; variable c2c(15); }
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if c1a == CC.CONST_1 {; variable c1a(6); }
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if c1d == CC.CONST_1 {; variable c1d(6); }
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if c1A == CC.CONST_1 {; variable c1A(6); }
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if c1B == CC.CONST_1 {; variable c1B(6); }
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if c1D == CC.CONST_1 {; variable c1D(6); }
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if c2a == CC.CONST_1 {; variable c2a(6); }
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if c2d == CC.CONST_1 {; variable c2d(6); }
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if c2A == CC.CONST_1 {; variable c2A(6); }
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if c2B == CC.CONST_1 {; variable c2B(6); }
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if c2D == CC.CONST_1 {; variable c2D(6); }
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if c1a == CC.CONST_0 {; variable c1a(15); }
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if c1b == CC.CONST_0 {; variable c1b(15); }
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if c1c == CC.CONST_0 {; variable c1c(31); }
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if c1d == CC.CONST_0 {; variable c1d(7); }
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if c1A == CC.CONST_0 {; variable c1A(7); }
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if c1B == CC.CONST_0 {; variable c1B(7); }
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if c1C == CC.CONST_0 {; variable c1C(7); }
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if c1D == CC.CONST_0 {; variable c1D(7); }
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if c2a == CC.CONST_0 {; variable c2a(15); }
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if c2b == CC.CONST_0 {; variable c2b(15); }
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if c2c == CC.CONST_0 {; variable c2c(31); }
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if c2d == CC.CONST_0 {; variable c2d(7); }
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if c2A == CC.CONST_0 {; variable c2A(7); }
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if c2B == CC.CONST_0 {; variable c2B(7); }
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if c2C == CC.CONST_0 {; variable c2C(7); }
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if c2D == CC.CONST_0 {; variable c2D(7); }
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if c1a < 0 || c1a >= 16 {; error "Invalid color for CC cycle 1 (a)"; }
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if c1b < 0 || c1b >= 16 {; error "Invalid color for CC cycle 1 (b)"; }
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if c1c < 0 || c1c >= 32 {; error "Invalid color for CC cycle 1 (c)"; }
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if c1d < 0 || c1d >= 8 {; error "Invalid color for CC cycle 1 (d)"; }
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if c1A < 0 || c1A >= 8 {; error "Invalid alpha for CC cycle 1 (A)"; }
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if c1B < 0 || c1B >= 8 {; error "Invalid alpha for CC cycle 1 (B)"; }
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if c1C < 0 || c1C >= 8 {; error "Invalid alpha for CC cycle 1 (C)"; }
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if c1D < 0 || c1D >= 8 {; error "Invalid alpha for CC cycle 1 (D)"; }
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if c2a < 0 || c2a >= 16 {; error "Invalid color for CC cycle 2 (a)"; }
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if c2b < 0 || c2b >= 16 {; error "Invalid color for CC cycle 2 (b)"; }
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if c2c < 0 || c2c >= 32 {; error "Invalid color for CC cycle 2 (c)"; }
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if c2d < 0 || c2d >= 8 {; error "Invalid color for CC cycle 2 (d)"; }
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if c2A < 0 || c2A >= 8 {; error "Invalid alpha for CC cycle 2 (A)"; }
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if c2B < 0 || c2B >= 8 {; error "Invalid alpha for CC cycle 2 (B)"; }
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if c2C < 0 || c2C >= 8 {; error "Invalid alpha for CC cycle 2 (C)"; }
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if c2D < 0 || c2D >= 8 {; error "Invalid alpha for CC cycle 2 (D)"; }
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gSetCombine(c1a, c1b, c1c, c1d, c1A, c1B, c1C, c1D, c2a, c2b, c2c, c2d, c2A, c2B, c2C, c2D)
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}
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}
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