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https://github.com/encounter/aurora.git
synced 2026-07-09 18:19:33 -07:00
Jasper St. Pierre
1bd972429e
* Not a big deal if we're using our own lib, but officially, the scissor offset is 342, not 340. * aurora was subtracting the scissor offset for lt/tp, but not for rt/bm; fix that. * Handle empty scissors
61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
#include "gx.hpp"
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#include "__gx.h"
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extern "C" {
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void GXSetScissor(u32 left, u32 top, u32 width, u32 height) {
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const u32 tp = top + 342;
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const u32 lf = left + 342;
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const u32 bm = tp + height - 1;
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const u32 rt = lf + width - 1;
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SET_REG_FIELD(0, __gx->suScis0, 11, 0, tp);
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SET_REG_FIELD(0, __gx->suScis0, 11, 12, lf);
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SET_REG_FIELD(0, __gx->suScis1, 11, 0, bm);
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SET_REG_FIELD(0, __gx->suScis1, 11, 12, rt);
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GX_WRITE_RAS_REG(__gx->suScis0);
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GX_WRITE_RAS_REG(__gx->suScis1);
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__gx->bpSent = 1;
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}
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// TODO GXSetScissorBoxOffset
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void GXSetCullMode(GXCullMode mode) {
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// Swap front/back to match hardware convention
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GXCullMode hwMode;
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switch (mode) {
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case GX_CULL_FRONT:
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hwMode = GX_CULL_BACK;
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break;
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case GX_CULL_BACK:
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hwMode = GX_CULL_FRONT;
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break;
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default:
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hwMode = mode;
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break;
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}
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SET_REG_FIELD(0, __gx->genMode, 2, 14, hwMode);
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__gx->dirtyState |= 4; // gen mode dirty
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}
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void GXSetClipMode(GXClipMode mode) {
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GX_WRITE_XF_REG(5, mode);
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__gx->bpSent = 1;
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}
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void GXSetCoPlanar(GXBool enable) {
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u32 reg;
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SET_REG_FIELD(0, __gx->genMode, 1, 19, enable);
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// This sets a mask that causes only one bit to be updated in genMode on the next write.
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reg = 0x0008000;
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SET_REG_FIELD(0, reg, 8, 24, 0xFE);
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SET_REG_FIELD(0, reg, 24, 0, 1 << 19);
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GX_WRITE_RAS_REG(reg);
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// immediately flush
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GX_WRITE_RAS_REG(__gx->genMode);
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}
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}
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