mirror of https://github.com/nmlgc/ReC98.git
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
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#include "th01/hardware/graph.h"
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#include "th01/formats/ptn.hpp"
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static inline ptn_t* ptn_with_id_shift(int id)
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{
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// Before we bother with doing compile-time integer logarithms...
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// (MODDERS: This function shouldn't exist. Just use the regular
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// ptn_with_id().)
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if(PTN_IMAGES_PER_SLOT == 64) {
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return &ptn_images[id >> 6][id % PTN_IMAGES_PER_SLOT];
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}
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return &ptn_images[id / PTN_IMAGES_PER_SLOT][id % PTN_IMAGES_PER_SLOT];
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}
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#define grcg_clear_masked(vram_offset, w, mask) \
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grcg_setcolor_rmw(0); \
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VRAM_PUT(B, vram_offset, mask, w); \
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grcg_off();
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#define vram_snap_masked(planar_dots, vram_offset, w, mask) \
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planar_dots.B = VRAM_CHUNK(B, vram_offset, w) & mask; \
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planar_dots.R = VRAM_CHUNK(R, vram_offset, w) & mask; \
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planar_dots.G = VRAM_CHUNK(G, vram_offset, w) & mask; \
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planar_dots.E = VRAM_CHUNK(E, vram_offset, w) & mask;
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#define vram_or(vram_offset, w, planar) \
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VRAM_CHUNK(B, vram_offset, w) |= planar.B; \
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VRAM_CHUNK(R, vram_offset, w) |= planar.R; \
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VRAM_CHUNK(G, vram_offset, w) |= planar.G; \
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VRAM_CHUNK(E, vram_offset, w) |= planar.E;
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void ptn_unput_8(int left, int top, int ptn_id)
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{
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ptn_dots_t mask = 0;
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uint16_t vram_offset = vram_offset_shift(left, top);
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ptn_t *ptn = ptn_with_id_shift(ptn_id);
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for(unsigned int y = 0; y < PTN_H; y++) {
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mask = ptn->alpha[y];
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graph_accesspage_func(0);
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if(mask) {
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planar_t(PTN_W) page1;
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grcg_clear_masked(vram_offset, PTN_W, mask);
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graph_accesspage_func(1);
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vram_snap_masked(page1, vram_offset, PTN_W, mask);
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graph_accesspage_func(0);
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vram_or(vram_offset, PTN_W, page1);
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}
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vram_offset += ROW_SIZE;
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if(vram_offset > PLANE_SIZE) {
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break;
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}
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}
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}
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