From 80cdecbe19ad67d166bf930e3b7df3d3a3d0c735 Mon Sep 17 00:00:00 2001 From: ABelliqueux Date: Tue, 29 Dec 2020 16:39:21 +0100 Subject: [PATCH] switch to double buffering --- primdrawGT.c | 253 ++++++++++++++++++++++++--------------------------- 1 file changed, 117 insertions(+), 136 deletions(-) diff --git a/primdrawGT.c b/primdrawGT.c index 228be69..5c12feb 100644 --- a/primdrawGT.c +++ b/primdrawGT.c @@ -39,28 +39,31 @@ // Sample vector model #include "cube.c" -#define HI_RES 0 // 0: 320x240, 1: 640x480 -#define VMODE 1 -#define OT_LENGTH 2048 // Maximum number of OT entries -#define MAX_PRIMS 1024 // Maximum number of POLY_GT3 primitives +#define VMODE 0 -// Center screen coordinates #define SCREENXRES 320 #define SCREENYRES 240 #define CENTERX SCREENXRES/2 #define CENTERY SCREENYRES/2 -// Display and draw environments -DISPENV disp; -DRAWENV draw; +#define OTLEN 2048 // Maximum number of OT entries +#define PRIMBUFFLEN 32768 // Maximum number of POLY_GT3 primitives -u_long ot[2][OT_LENGTH]; // Ordering table (contains addresses to primitives) -POLY_GT3 primbuff[2][MAX_PRIMS]; // Primitive list // That's our prim buffer -int primcnt=0; // Primitive counter -int db = 0; // Current buffer counter +// Display and draw environments, double buffered +DISPENV disp[2]; +DRAWENV draw[2]; -RECT ClearRect ={0,0,320,240}; +u_long ot[2][OTLEN]; // Ordering table (contains addresses to primitives) +char primbuff[2][PRIMBUFFLEN] = {0}; // Primitive list // That's our prim buffer + +//~ int primcnt=0; // Primitive counter + +char * nextpri = primbuff[0]; // Primitive counter + +short db = 0; // Current buffer counter + +//~ RECT ClearRect ={0,0,320,240}; //~ extern unsigned long _binary_TIM_bousai_tim_start[]; //~ extern unsigned long _binary_TIM_bousai_tim_end[]; @@ -70,7 +73,8 @@ RECT ClearRect ={0,0,320,240}; // Prototypes -void init(); +void init(void); +void display(void); void LoadTexture(u_long * tim, TIM_IMAGE * tparam); void init(){ @@ -78,37 +82,59 @@ void init(){ PadInit(0); ResetGraph(0); - // Initialize and setup the GTE InitGeom(); SetGeomOffset(CENTERX, CENTERY); // x, y offset SetGeomScreen(CENTERX); // Distance between eye and screen + // Set the display and draw environments + SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES); + SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES); - // Set the display and draw environments - SetDefDispEnv(&disp, 0, 0, SCREENXRES, SCREENYRES); - SetDefDrawEnv(&draw, 0, SCREENYRES, SCREENXRES, SCREENYRES); + SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES); + SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES); if (VMODE) { SetVideoMode(MODE_PAL); - disp.screen.y += 8; - } - - // Set the new display/drawing environments - VSync(0); - - PutDispEnv(&disp); - PutDrawEnv(&draw); - - ClearImage(&ClearRect, 0, 0, 127); // Clear FB + disp[0].screen.y += 8; + disp[1].screen.y += 8; + } + setRGB0(&draw[0], 0, 0, 255); + setRGB0(&draw[1], 0, 0, 255); + + draw[0].isbg = 1; + draw[1].isbg = 1; + + PutDispEnv(&disp[db]); + PutDrawEnv(&draw[db]); + // Init font system FntLoad(960, 0); FntOpen(16, 16, 196, 64, 0, 256); } + +void display(void){ + DrawSync(0); + VSync(0); + + PutDispEnv(&disp[db]); + PutDrawEnv(&draw[db]); + + SetDispMask(1); + + DrawOTag(ot[db] + OTLEN - 1); + + db = !db; + + nextpri = primbuff[db]; + + + } + void LoadTexture(u_long * tim, TIM_IMAGE * tparam){ // This part is from Lameguy64's tutorial series : lameguy64.net/svn/pstutorials/chapter1/3-textures.html login/pw: annoyingmous OpenTIM(tim); // Open the tim binary data, feed it the address of the data in memory ReadTIM(tparam); // This read the header of the TIM data and sets the corresponding members of the TIM_IMAGE structure @@ -132,34 +158,28 @@ int main() { long t, p, OTz, Flag; // t == vertex count, p == depth cueing interpolation value, OTz == value to create Z-ordered OT, Flag == see LibOver47.pdf, p.143 - SVECTOR Rotate={ 0 }; // Rotation coordinates - VECTOR Trans={ 0, 0, CENTERX, 0 }; // Translation coordinates - - // Scaling coordinates - VECTOR Scale={ ONE*(1+HI_RES), ONE*(1+HI_RES), ONE*(1+HI_RES), 0 }; // ONE == 4096, is * 2 if HI_RES == 1 - - MATRIX Matrix={0}; // Matrix data for the GTE - - - draw.tw.w = 32; - draw.tw.h = 32; + POLY_GT3 *poly = {0}; // pointer to a POLY_G4 + SVECTOR Rotate={ 0 }; // Rotation coordinates + VECTOR Trans={ 0, 0, CENTERX, 0 }; // Translation coordinates + // Scaling coordinates + VECTOR Scale={ ONE, ONE, ONE, 0 }; // ONE == 4096 + MATRIX Matrix={0}; // Matrix data for the GTE + + // Texture window + + DR_MODE * dr_mode; // Pointer to dr_mode prim + + RECT tws = {0, 0, 32, 32}; // Texture window coordinates : x, y, w, h + init(); LoadTexture(_binary_TIM_cube_tim_start, &tim_cube); + // Main loop while (1) { - // Render the banner (FntPrint is always on top because it is not part of the OT) - //~ #if HI_RES - //~ FntPrint("\n\n"); - //~ #endif - //~ FntPrint("\n\nGOURAUD SHADED TMESH EXAMPLE\n"); - //~ FntPrint("SCHNAPPY, 2020 \n"); - //~ FntPrint("BASED ON PRIMDRAW BY LAMEGUY64, 2014 \n"); - - // Read pad status PadStatus = PadRead(0); @@ -182,7 +202,7 @@ int main() { if (PadStatus & PADselect) { Rotate.vx = Rotate.vy = Rotate.vz = 0; - Scale.vx = Scale.vy = Scale.vz = ONE*(1+HI_RES); + Scale.vx = Scale.vy = Scale.vz = ONE; Trans.vx = Trans.vy = 0; Trans.vz = CENTERX; } @@ -193,7 +213,7 @@ int main() { if (TPressed == 0) { AutoRotate = (AutoRotate + 1) & 1; Rotate.vx = Rotate.vy = Rotate.vz = 0; - Scale.vx = Scale.vy = Scale.vz = ONE*(1+HI_RES); + Scale.vx = Scale.vy = Scale.vz = ONE; Trans.vx = Trans.vy = 0; Trans.vz = CENTERX; } @@ -210,10 +230,8 @@ int main() { // Clear the current OT - ClearOTagR(&ot[db][0], OT_LENGTH); - primcnt = 0; - - + ClearOTagR(ot[db], OTLEN); + // Convert and set the matrixes RotMatrix(&Rotate, &Matrix); TransMatrix(&Matrix, &Trans); @@ -225,106 +243,69 @@ int main() { // Render the sample vector model t=0; + // modelCube is a TMESH, len member == # vertices, but here it's # of triangle... So, for each tri * 3 vertices ... for (i = 0; i < (modelCube.len*3); i += 3) { - // Initialize the primitive and set its color values - SetPolyGT3(&primbuff[db][primcnt]); - setRGB0(&primbuff[db][primcnt], modelCube.c[i].r, modelCube.c[i].g, modelCube.c[i].b); - setRGB1(&primbuff[db][primcnt], modelCube.c[i+1].r, modelCube.c[i+1].g, modelCube.c[i+1].b); - setRGB2(&primbuff[db][primcnt], modelCube.c[i+2].r, modelCube.c[i+2].g, modelCube.c[i+2].b); + poly = (POLY_GT3 *)nextpri; - ((POLY_GT3 *)&primbuff[db][primcnt])->tpage = getTPage(tim_cube.mode&0x3, 0, - tim_cube.prect->x, - tim_cube.prect->y); + // Initialize the primitive and set its color values + + SetPolyGT3(poly); - setUV3(&primbuff[db][primcnt], modelCube.u[i].vx, modelCube.u[i].vy, - modelCube.u[i+1].vx, modelCube.u[i+1].vy, - modelCube.u[i+2].vx, modelCube.u[i+2].vy); - - //~ FntPrint("%d %d %d %d %d %d\n", modelCube.u[i].vx, modelCube.u[i].vy, - //~ modelCube.u[i+1].vx, modelCube.u[i+1].vy, - //~ modelCube.u[i+2].vx, modelCube.u[i+2].vy); + ((POLY_GT3 *)poly)->tpage = getTPage(tim_cube.mode&0x3, 0, + tim_cube.prect->x, + tim_cube.prect->y + ); + + setRGB0(poly, modelCube.c[i].r , modelCube.c[i].g , modelCube.c[i].b); + setRGB1(poly, modelCube.c[i+1].r, modelCube.c[i+1].g, modelCube.c[i+1].b); + setRGB2(poly, modelCube.c[i+2].r, modelCube.c[i+2].g, modelCube.c[i+2].b); + + setUV3(poly, modelCube.u[i].vx, modelCube.u[i].vy, + modelCube.u[i+1].vx, modelCube.u[i+1].vy, + modelCube.u[i+2].vx, modelCube.u[i+2].vy); + // Rotate, translate, and project the vectors and output the results into a primitive - OTz = RotTransPers(&modelCube_mesh[modelCube_index[t]], (long*)&primbuff[db][primcnt].x0, &p, &Flag); - - OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+1]], (long*)&primbuff[db][primcnt].x1, &p, &Flag); - OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+2]], (long*)&primbuff[db][primcnt].x2, &p, &Flag); + OTz = RotTransPers(&modelCube_mesh[modelCube_index[t]] , (long*)&poly->x0, &p, &Flag); + OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+1]], (long*)&poly->x1, &p, &Flag); + OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+2]], (long*)&poly->x2, &p, &Flag); // Sort the primitive into the OT OTz /= 3; - if ((OTz > 0) && (OTz < OT_LENGTH)) - AddPrim(&ot[db][OTz-2], &primbuff[db][primcnt]); + if ((OTz > 0) && (OTz < OTLEN)) + AddPrim(&ot[db][OTz-2], poly); - primcnt++; + nextpri += sizeof(POLY_GT3); + t+=3; } - //~ t=0; - //~ // modelCube is a TMESH, len member == # vertices, but here it's # of triangle... So, for each tri * 3 vertices ... - //~ for (i = 0; i < (modelPlan.len*3); i += 3) { - - //~ // Initialize the primitive and set its color values - //~ SetPolyG3(&primbuff[db][primcnt]); - //~ setRGB0(&primbuff[db][primcnt], modelPlan.c[i].r, modelPlan.c[i].g, modelPlan.c[i].b); - //~ setRGB1(&primbuff[db][primcnt], modelPlan.c[i+1].r, modelPlan.c[i+1].g, modelPlan.c[i+1].b); - //~ setRGB2(&primbuff[db][primcnt], modelPlan.c[i+2].r, modelPlan.c[i+2].g, modelPlan.c[i+2].b); - - //~ // Rotate, translate, and project the vectors and output the results into a primitive - - //~ OTz = RotTransPers(&modelPlan_mesh[modelPlan_index[t]], (long*)&primbuff[db][primcnt].x0, &p, &Flag); + dr_mode = (DR_MODE *)nextpri; - //~ OTz += RotTransPers(&modelPlan_mesh[modelPlan_index[t+1]], (long*)&primbuff[db][primcnt].x1, &p, &Flag); - //~ OTz += RotTransPers(&modelPlan_mesh[modelPlan_index[t+2]], (long*)&primbuff[db][primcnt].x2, &p, &Flag); - - //~ // Sort the primitive into the OT - //~ OTz /= 3; - //~ if ((OTz > 0) && (OTz < OT_LENGTH)) - //~ AddPrim(&ot[db][OTz-2], &primbuff[db][primcnt]); - - //~ primcnt++; - //~ t+=3; - - //~ } - - - // Prepare to switch buffers - #if HI_RES == 0 - SetDefDispEnv(&disp, 0, 240*db, 320, 240); - SetDefDrawEnv(&draw, 0, 240*(1-db), 320, 240); - #endif + setDrawMode(dr_mode,1,0, getTPage(tim_cube.mode&0x3, 0, + tim_cube.prect->x, + tim_cube.prect->y), &tws); //set texture window + + AddPrim(&ot[db], dr_mode); + + nextpri += sizeof(DR_MODE); + + // Render the banner (FntPrint is always on top because it is not part of the OT) + //~ #if HI_RES + //~ FntPrint("\n\n"); + //~ #endif + //~ FntPrint("\n\nGOURAUD SHADED TMESH EXAMPLE\n"); + //~ FntPrint("SCHNAPPY, 2020 \n"); + //~ FntPrint("BASED ON PRIMDRAW BY LAMEGUY64, 2014 \n"); + + + FntFlush(-1); + display(); - // Wait for all drawing to finish - DrawSync(0); - - // Clear the current buffer before rendering the next frame - #if HI_RES == 0 - ClearRect.y = 240*db; - #endif - ClearImage(&ClearRect, 0, 0, 127); - - // Begin rendering the next frame - DrawOTag(&ot[db][OT_LENGTH-1]); - FntFlush(0); - - - // Wait for VSync and then switch buffers - VSync(0); - #if HI_RES == 0 - PutDispEnv(&disp); - PutDrawEnv(&draw); - #endif - SetDispMask(1); - - - // Toggle buffer index - #if HI_RES == 0 - db = !db; - #endif - } return 0; }