mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 19:07:47 -04:00
Pegasus
45 lines
3.2 KiB
C
45 lines
3.2 KiB
C
/* Textured triangle command flags and source software texture path. */
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#include "source_gpu_command_projection.h"
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#include "gpu_sw_renderer.h"
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#include "psx_sha256.h"
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#include <stdio.h>
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#include <stdlib.h>
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static uint16_t vram[1024*512];static unsigned checks;static int pixels_only;
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int g_ws_bd_stretch_on,g_ws_bd_stretch_pct;
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int psx_ws_prim_in_backdrop(void){abort();}
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static void check(int okay,const char *message){checks++;if(!okay){fprintf(stderr,"FAIL: %s\n",message);exit(1);}}
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static void run(unsigned opcode,unsigned mode,unsigned blend,unsigned mask,unsigned color){
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unsigned page=16|(mode<<7)|(blend<<5);
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uint32_t words[]={opcode<<24|color,0x00040004,300u<<22,0x00040008,(page<<16)|4,0x00060004,0};
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SourceGPUCommandProjection s;source_gpu_command_cold(&s);s.clip_x1=1023;s.clip_y1=511;s.budget=256;s.mask_bits=mask;
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if(!pixels_only){
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check(source_gpu_polygon_supported(opcode),"textured triangle opcode admitted");
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check(source_gpu_command_length(words[0])==7,"seven-word first triangle packet");
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check(source_gpu_command_feedback_length(words[0])==1,"one-word DMA feedback");
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for(unsigned i=0;i<6;i++){check(source_gpu_command_write(&s,words[i]),"partial packet queues");check(!s.dispatch.kind,"no partial rendering");}
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check(source_gpu_command_write(&s,words[6]),"complete textured triangle dispatch");
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check(s.dispatch.kind==SOURCE_GPU_DISPATCH_COMMAND && s.dispatch.count==7 && !s.phase && !s.count,"single full triangle dispatch");
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check(s.budget==256-84-180-12,"source setup and doubled six-pixel cost, independent of blend/mask");
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check((s.draw_mode&511)==page,"polygon tpage latches at dispatch");
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}
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memset(vram,0,sizeof(vram));const uint16_t texels[]={0,0x801f,0x03e0,0xfc00};
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memcpy(vram+300*1024,texels,sizeof(texels));
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for(unsigned y=4;y<6;y++)for(unsigned x=4;x<8;x++)vram[y*1024+x]=(uint16_t)(0x1234|((x&1)?0x8000:0));
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if(mode==0)vram[256*1024]=0x3210;
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else if(mode==1){vram[256*1024]=0x0100;vram[256*1024+1]=0x0302;}
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else memcpy(vram+256*1024,texels,sizeof(texels));
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sw_renderer_init(vram);sw_source_texture_control(0,0);sw_source_texture_control(3,page);
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sw_set_mask_bits(mask&1,!!(mask&2));sw_set_semi_transparency(!!(opcode&2),blend);
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int x[]={4,8,4},y[]={4,4,6},extra=-1;uint32_t colors[]={color,color,color};
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SourceGPUTexture texture={0};texture.page=page;texture.clut=300u<<6;texture.raw=!!(opcode&1);texture.load_clut=1;texture.uv[1]=4;
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check(sw_draw_source_triangle(x,y,colors,0,0,0,0,&texture,&extra),"existing source software triangle path");
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check(extra==(mode==0?20:mode==1?260:4),"transparent/masked pixels retain full CLUT/cache work");
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uint8_t hash[32];psx_sha256_compute((uint8_t*)vram,sizeof(vram),hash);
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printf("op%02x-m%u-b%u-k%u-c%06x ",opcode,mode,blend,mask,color);for(unsigned i=0;i<32;i++)printf("%02x",hash[i]);puts("");
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check(sw_draw_source_triangle(x,y,colors,0,0,0,0,&texture,&extra) && extra==0,"repeated triangle retains cache");
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}
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int main(int argc,char **argv){pixels_only=argc==2 && !strcmp(argv[1],"--pixels-only");
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for(unsigned opcode=0x24;opcode<=0x27;opcode++)for(unsigned mode=0;mode<3;mode++)for(unsigned blend=0;blend<4;blend++)for(unsigned mask=0;mask<4;mask++){
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run(opcode,mode,blend,mask,0x808080);run(opcode,mode,blend,mask,0xe3942b);}
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fprintf(stderr,"source textured triangle: %u checks passed\n",checks);return 0;}
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