151 lines
3.9 KiB
C++
Executable File
151 lines
3.9 KiB
C++
Executable File
#ifdef BPPU_CPP
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#include "bppu_render_cache.cpp"
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#include "bppu_render_windows.cpp"
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#include "bppu_render_bg.cpp"
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#include "bppu_render_oam.cpp"
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#include "bppu_render_mode7.cpp"
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#include "bppu_render_addsub.cpp"
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#include "bppu_render_line.cpp"
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//this function can be used to disable BG / OAM layer rendering (currently unused)
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bool bPPU::render_enabled(uint8 bg, uint8 pri) {
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return true;
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}
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/*
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Mode 0: ->
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
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BG4B, BG3B, OAM0, BG4A, BG3A, OAM1, BG2B, BG1B, OAM2, BG2A, BG1A, OAM3
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*/
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void bPPU::render_line_mode0() {
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render_line_bg(BG1, COLORDEPTH_4, 8, 11);
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render_line_bg(BG2, COLORDEPTH_4, 7, 10);
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render_line_bg(BG3, COLORDEPTH_4, 2, 5);
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render_line_bg(BG4, COLORDEPTH_4, 1, 4);
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render_line_oam(3, 6, 9, 12);
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}
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/*
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Mode 1 (pri=1): ->
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10
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BG3B, OAM0, OAM1, BG2B, BG1B, OAM2, BG2A, BG1A, OAM3, BG3A
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Mode 1 (pri=0): ->
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10
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BG3B, OAM0, BG3A, OAM1, BG2B, BG1B, OAM2, BG2A, BG1A, OAM3
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*/
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void bPPU::render_line_mode1() {
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if(regs.bg3_priority) {
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render_line_bg(BG1, COLORDEPTH_16, 5, 8);
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render_line_bg(BG2, COLORDEPTH_16, 4, 7);
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render_line_bg(BG3, COLORDEPTH_4, 1, 10);
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render_line_oam(2, 3, 6, 9);
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} else {
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render_line_bg(BG1, COLORDEPTH_16, 6, 9);
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render_line_bg(BG2, COLORDEPTH_16, 5, 8);
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render_line_bg(BG3, COLORDEPTH_4, 1, 3);
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render_line_oam(2, 4, 7, 10);
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}
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}
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/*
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Mode 2: ->
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1, 2, 3, 4, 5, 6, 7, 8
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BG2B, OAM0, BG1B, OAM1, BG2A, OAM2, BG1A, OAM3
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*/
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void bPPU::render_line_mode2() {
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render_line_bg(BG1, COLORDEPTH_16, 3, 7);
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render_line_bg(BG2, COLORDEPTH_16, 1, 5);
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render_line_oam(2, 4, 6, 8);
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}
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/*
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Mode 3: ->
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1, 2, 3, 4, 5, 6, 7, 8
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BG2B, OAM0, BG1B, OAM1, BG2A, OAM2, BG1A, OAM3
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*/
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void bPPU::render_line_mode3() {
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render_line_bg(BG1, COLORDEPTH_256, 3, 7);
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render_line_bg(BG2, COLORDEPTH_16, 1, 5);
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render_line_oam(2, 4, 6, 8);
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}
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/*
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Mode 4: ->
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1, 2, 3, 4, 5, 6, 7, 8
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BG2B, OAM0, BG1B, OAM1, BG2A, OAM2, BG1A, OAM3
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*/
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void bPPU::render_line_mode4() {
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render_line_bg(BG1, COLORDEPTH_256, 3, 7);
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render_line_bg(BG2, COLORDEPTH_4, 1, 5);
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render_line_oam(2, 4, 6, 8);
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}
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/*
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Mode 5: ->
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1, 2, 3, 4, 5, 6, 7, 8
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BG2B, OAM0, BG1B, OAM1, BG2A, OAM2, BG1A, OAM3
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*/
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void bPPU::render_line_mode5() {
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render_line_bg(BG1, COLORDEPTH_16, 3, 7);
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render_line_bg(BG2, COLORDEPTH_4, 1, 5);
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render_line_oam(2, 4, 6, 8);
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}
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/*
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Mode 6: ->
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1, 2, 3, 4, 5, 6
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OAM0, BG1B, OAM1, OAM2, BG1A, OAM3
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*/
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void bPPU::render_line_mode6() {
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render_line_bg(BG1, COLORDEPTH_16, 2, 5);
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render_line_oam(1, 3, 4, 6);
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}
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/*
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Mode7: ->
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1, 2, 3, 4, 5
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OAM0, BG1n, OAM1, OAM2, OAM3
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Mode 7 EXTBG: ->
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1, 2, 3, 4, 5, 6, 7
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BG2B, OAM0, BG1n, OAM1, BG2A, OAM2, OAM3
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*/
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void bPPU::render_line_mode7() {
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if(regs.mode7_extbg == false) {
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render_line_mode7(BG1, 2, 2);
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render_line_oam(1, 3, 4, 5);
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} else {
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render_line_mode7(BG1, 3, 3);
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render_line_mode7(BG2, 1, 5);
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render_line_oam(2, 4, 6, 7);
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}
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}
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void bPPU::render_line() {
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if(regs.display_disabled == true) {
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render_line_clear();
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return;
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}
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flush_pixel_cache();
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build_window_tables(COL);
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update_bg_info();
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switch(regs.bg_mode) {
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case 0: render_line_mode0(); break;
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case 1: render_line_mode1(); break;
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case 2: render_line_mode2(); break;
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case 3: render_line_mode3(); break;
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case 4: render_line_mode4(); break;
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case 5: render_line_mode5(); break;
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case 6: render_line_mode6(); break;
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case 7: render_line_mode7(); break;
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}
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render_line_output();
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}
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#endif //ifdef BPPU_CPP
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