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Dynamic lights? Did anyone say DYNAMIC LIGHTS?

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This commit is contained in:
Magnus Norddahl 2016-12-20 23:21:34 +01:00
commit 8a3db6c003
10 changed files with 133 additions and 9 deletions
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42
tools/drawergen/fixedfunction/drawwallcodegen.cpp
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@ -78,6 +78,10 @@ void DrawWallCodegen::Generate(DrawWallVariant variant, bool fourColumns, SSAVal
SSAShort fade_blue = args[0][41].load(true);
SSAShort desaturate = args[0][42].load(true);
SSAInt flags = args[0][43].load(true);
start_z = args[0][44].load(true);
step_z = args[0][45].load(true);
dynlights = args[0][46].load(true);
num_dynlights = args[0][47].load(true);
shade_constants.light = SSAVec4i(light_blue.zext_int(), light_green.zext_int(), light_red.zext_int(), light_alpha.zext_int());
shade_constants.fade = SSAVec4i(fade_blue.zext_int(), fade_green.zext_int(), fade_red.zext_int(), fade_alpha.zext_int());
shade_constants.desaturate = desaturate.zext_int();
@ -129,9 +133,11 @@ void DrawWallCodegen::Loop(DrawWallVariant variant, bool fourColumns, bool isSim
int numColumns = fourColumns ? 4 : 1;
stack_index.store(SSAInt(0));
stack_z.store(start_z);
{
SSAForBlock loop;
SSAInt index = stack_index.load();
z = stack_z.load();
loop.loop_block(index < count);
SSAInt frac[4];
@ -167,6 +173,7 @@ void DrawWallCodegen::Loop(DrawWallVariant variant, bool fourColumns, bool isSim
dest[offset].store_vec4ub(color);
}
stack_z.store(z + step_z);
stack_index.store(index.add(SSAInt(1), true, true));
for (int i = 0; i < numColumns; i++)
stack_frac[i].store(frac[i] + fracstep[i]);
@ -209,10 +216,41 @@ SSAVec4i DrawWallCodegen::SampleLinear(SSAUBytePtr col0, SSAUBytePtr col1, SSAIn
SSAVec4i DrawWallCodegen::Shade(SSAVec4i fg, int index, bool isSimpleShade)
{
SSAVec4i c;
if (isSimpleShade)
return shade_bgra_simple(fg, light[index]);
c = shade_bgra_simple(fg, light[index]);
else
return shade_bgra_advanced(fg, light[index], shade_constants);
c = shade_bgra_advanced(fg, light[index], shade_constants);
stack_lit_color.store(c);
stack_light_index.store(SSAInt(0));
SSAForBlock block;
SSAInt light_index = stack_light_index.load();
SSAVec4i lit_color = stack_lit_color.load();
block.loop_block(light_index < num_dynlights);
{
SSAVec4i light_color = SSAUBytePtr(dynlights[light_index][0].v).load_vec4ub(true);
SSAFloat light_x = dynlights[light_index][1].load(true);
//SSAFloat light_y = dynlights[light_index][2].load(true);
SSAFloat light_z = dynlights[light_index][3].load(true);
SSAFloat light_rcp_radius = dynlights[light_index][4].load(true);
// L = light-pos
// dist = sqrt(dot(L, L))
// attenuation = 1 - MIN(dist * (1/radius), 1)
SSAFloat Lxy2 = light_x; // L.x*L.x + L.y*L.y
SSAFloat Lz = light_z - z;
SSAFloat dist = SSAFloat::sqrt(Lxy2 + Lz * Lz);
SSAInt attenuation = SSAInt(SSAFloat(256.0f) - SSAFloat::MIN(dist * light_rcp_radius, SSAFloat(256.0f)), true);
SSAVec4i contribution = (light_color * fg * attenuation) >> 16;
stack_lit_color.store(lit_color + contribution);
stack_light_index.store(light_index + 1);
}
block.end_block();
return stack_lit_color.load();
}
SSAVec4i DrawWallCodegen::Blend(SSAVec4i fg, SSAVec4i bg, DrawWallVariant variant)