mirror of https://github.com/bsnes-emu/bsnes.git
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
auto PPU::Line::renderWindow(PPU::IO::WindowLayer& self, bool enable, bool* output) -> void {
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if(!enable || (!self.oneEnable && !self.twoEnable)) {
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memory::fill<bool>(output, 256, 0);
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return;
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}
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if(self.oneEnable && !self.twoEnable) {
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bool set = 1 ^ self.oneInvert, clear = !set;
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for(uint x : range(256)) {
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output[x] = x >= io.window.oneLeft && x <= io.window.oneRight ? set : clear;
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}
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return;
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}
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if(self.twoEnable && !self.oneEnable) {
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bool set = 1 ^ self.twoInvert, clear = !set;
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for(uint x : range(256)) {
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output[x] = x >= io.window.twoLeft && x <= io.window.twoRight ? set : clear;
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}
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return;
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}
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for(uint x : range(256)) {
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bool oneMask = (x >= io.window.oneLeft && x <= io.window.oneRight) ^ self.oneInvert;
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bool twoMask = (x >= io.window.twoLeft && x <= io.window.twoRight) ^ self.twoInvert;
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switch(self.mask) {
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case 0: output[x] = (oneMask | twoMask) == 1; break;
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case 1: output[x] = (oneMask & twoMask) == 1; break;
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case 2: output[x] = (oneMask ^ twoMask) == 1; break;
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case 3: output[x] = (oneMask ^ twoMask) == 0; break;
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}
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}
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}
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auto PPU::Line::renderWindow(PPU::IO::WindowColor& self, uint mask, bool* output) -> void {
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bool set, clear;
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switch(mask) {
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case 0: memory::fill<bool>(output, 256, 1); return; //always
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case 1: set = 1, clear = 0; break; //inside
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case 2: set = 0, clear = 1; break; //outside
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case 3: memory::fill<bool>(output, 256, 0); return; //never
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}
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if(!self.oneEnable && !self.twoEnable) {
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memory::fill<bool>(output, 256, clear);
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return;
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}
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if(self.oneEnable && !self.twoEnable) {
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if(self.oneInvert) set ^= 1, clear ^= 1;
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for(uint x : range(256)) {
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output[x] = x >= io.window.oneLeft && x <= io.window.oneRight ? set : clear;
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}
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return;
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}
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if(self.twoEnable && !self.oneEnable) {
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if(self.twoInvert) set ^= 1, clear ^= 1;
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for(uint x : range(256)) {
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output[x] = x >= io.window.twoLeft && x <= io.window.twoRight ? set : clear;
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}
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return;
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}
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for(uint x : range(256)) {
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bool oneMask = (x >= io.window.oneLeft && x <= io.window.oneRight) ^ self.oneInvert;
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bool twoMask = (x >= io.window.twoLeft && x <= io.window.twoRight) ^ self.twoInvert;
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switch(self.mask) {
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case 0: output[x] = (oneMask | twoMask) == 1 ? set : clear; break;
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case 1: output[x] = (oneMask & twoMask) == 1 ? set : clear; break;
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case 2: output[x] = (oneMask ^ twoMask) == 1 ? set : clear; break;
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case 3: output[x] = (oneMask ^ twoMask) == 0 ? set : clear; break;
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}
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}
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}
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