add 3d gouraud textured cube example
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7
Makefile
7
Makefile
@ -97,6 +97,13 @@ SRCS = hello_world.c \
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#~ SRCS = hello_cube.c \
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#~ ../common/crt0/crt0.s \
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#~ TARGET = hello_cubetex
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#~ TYPE = ps-exe
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#~ SRCS = hello_cubetex.c \
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#~ ../common/crt0/crt0.s \
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#~ TIM/cubetex.tim \
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CPPFLAGS += -I../psyq/include
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LDFLAGS += -L../psyq/lib
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LDFLAGS += -Wl,--start-group
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BIN
TIM/cubetex.tim
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BIN
TIM/cubetex.tim
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Binary file not shown.
BIN
cubetex.blend
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BIN
cubetex.blend
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Binary file not shown.
297
hello_cubetex.c
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297
hello_cubetex.c
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@ -0,0 +1,297 @@
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/* primdrawG.c, by Schnappy, 12-2020
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- Draw a gouraud shaded mesh exported as a TMESH by the blender <= 2.79b plugin io_export_psx_tmesh.py
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based on primdraw.c by Lameguy64 (http://www.psxdev.net/forum/viewtopic.php?f=64&t=537)
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2014 Meido-Tek Productions.
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Demonstrates:
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- Using a primitive OT to draw triangles without libgs.
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- Using the GTE to rotate, translate, and project 3D primitives.
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Controls:
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Start - Toggle interactive/non-interactive mode.
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Select - Reset object's position and angles.
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L1/L2 - Move object closer/farther.
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L2/R2 - Rotate object (XY).
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Up/Down/Left/Right - Rotate object (XZ/YZ).
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Triangle/Cross/Square/Circle - Move object up/down/left/right.
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*/
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/* PSX screen coordinate system
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*
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* Z+
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* /
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* /
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* +------X+
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* /|
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* / |
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* / Y+
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* eye */
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#include <sys/types.h>
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#include <libgte.h>
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#include <libgpu.h>
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#include <libetc.h>
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#include <stdio.h>
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// Sample vector model
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#include "cubetex.c"
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#define VMODE 0
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#define SCREENXRES 320
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#define SCREENYRES 240
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#define CENTERX SCREENXRES/2
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#define CENTERY SCREENYRES/2
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#define OTLEN 2048 // Maximum number of OT entries
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#define PRIMBUFFLEN 32768 // Maximum number of POLY_GT3 primitives
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// Display and draw environments, double buffered
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DISPENV disp[2];
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DRAWENV draw[2];
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u_long ot[2][OTLEN]; // Ordering table (contains addresses to primitives)
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char primbuff[2][PRIMBUFFLEN] = {0}; // Primitive list // That's our prim buffer
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//~ int primcnt=0; // Primitive counter
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char * nextpri = primbuff[0]; // Primitive counter
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short db = 0; // Current buffer counter
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// Prototypes
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void init(void);
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void display(void);
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void LoadTexture(u_long * tim, TIM_IMAGE * tparam);
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void init(){
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// Reset the GPU before doing anything and the controller
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PadInit(0);
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ResetGraph(0);
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// Initialize and setup the GTE
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InitGeom();
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SetGeomOffset(CENTERX, CENTERY); // x, y offset
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SetGeomScreen(CENTERX); // Distance between eye and screen
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// Set the display and draw environments
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SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES);
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SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES);
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SetDefDrawEnv(&draw[1], 0, 0, SCREENXRES, SCREENYRES);
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if (VMODE)
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{
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SetVideoMode(MODE_PAL);
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disp[0].screen.y += 8;
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disp[1].screen.y += 8;
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}
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setRGB0(&draw[0], 0, 0, 255);
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setRGB0(&draw[1], 0, 0, 255);
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draw[0].isbg = 1;
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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// Init font system
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FntLoad(960, 0);
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FntOpen(16, 16, 196, 64, 0, 256);
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}
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void display(void){
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DrawSync(0);
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VSync(0);
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PutDispEnv(&disp[db]);
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PutDrawEnv(&draw[db]);
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SetDispMask(1);
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DrawOTag(ot[db] + OTLEN - 1);
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db = !db;
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nextpri = primbuff[db];
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}
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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
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OpenTIM(tim); // Open the tim binary data, feed it the address of the data in memory
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ReadTIM(tparam); // This read the header of the TIM data and sets the corresponding members of the TIM_IMAGE structure
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LoadImage(tparam->prect, tparam->paddr); // Transfer the data from memory to VRAM at position prect.x, prect.y
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DrawSync(0); // Wait for the drawing to end
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if (tparam->mode & 0x8){ // check 4th bit // If 4th bit == 1, TIM has a CLUT
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LoadImage(tparam->crect, tparam->caddr); // Load it to VRAM at position crect.x, crect.y
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DrawSync(0); // Wait for drawing to end
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}
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}
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int main() {
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int i;
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int PadStatus;
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int TPressed=0;
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int AutoRotate=1;
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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
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POLY_GT3 *poly = {0}; // pointer to a POLY_G4
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SVECTOR Rotate={ 0 }; // Rotation coordinates
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VECTOR Trans={ 0, 0, CENTERX, 0 }; // Translation coordinates
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// Scaling coordinates
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VECTOR Scale={ ONE, ONE, ONE, 0 }; // ONE == 4096
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MATRIX Matrix={0}; // Matrix data for the GTE
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// Texture window
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DR_MODE * dr_mode; // Pointer to dr_mode prim
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RECT tws = {0, 0, 32, 32}; // Texture window coordinates : x, y, w, h
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init();
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LoadTexture(_binary_TIM_cubetex_tim_start, &tim_cube);
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// Main loop
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while (1) {
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// Read pad status
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PadStatus = PadRead(0);
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if (AutoRotate == 0) {
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if (PadStatus & PADL1) Trans.vz -= 4;
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if (PadStatus & PADR1) Trans.vz += 4;
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if (PadStatus & PADL2) Rotate.vz -= 8;
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if (PadStatus & PADR2) Rotate.vz += 8;
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if (PadStatus & PADLup) Rotate.vx -= 8;
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if (PadStatus & PADLdown) Rotate.vx += 8;
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if (PadStatus & PADLleft) Rotate.vy -= 8;
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if (PadStatus & PADLright) Rotate.vy += 8;
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if (PadStatus & PADRup) Trans.vy -= 2;
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if (PadStatus & PADRdown) Trans.vy += 2;
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if (PadStatus & PADRleft) Trans.vx -= 2;
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if (PadStatus & PADRright) Trans.vx += 2;
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if (PadStatus & PADselect) {
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Rotate.vx = Rotate.vy = Rotate.vz = 0;
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Scale.vx = Scale.vy = Scale.vz = ONE;
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Trans.vx = Trans.vy = 0;
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Trans.vz = CENTERX;
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}
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}
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if (PadStatus & PADstart) {
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if (TPressed == 0) {
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AutoRotate = (AutoRotate + 1) & 1;
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Rotate.vx = Rotate.vy = Rotate.vz = 0;
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Scale.vx = Scale.vy = Scale.vz = ONE;
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Trans.vx = Trans.vy = 0;
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Trans.vz = CENTERX;
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}
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TPressed = 1;
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} else {
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TPressed = 0;
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}
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if (AutoRotate) {
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Rotate.vy += 8; // Pan
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Rotate.vx += 8; // Tilt
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//~ Rotate.vz += 8; // Roll
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}
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// Clear the current OT
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ClearOTagR(ot[db], OTLEN);
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// Convert and set the matrixes
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RotMatrix(&Rotate, &Matrix);
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TransMatrix(&Matrix, &Trans);
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ScaleMatrix(&Matrix, &Scale);
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SetRotMatrix(&Matrix);
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SetTransMatrix(&Matrix);
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// Render the sample vector model
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t=0;
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// modelCube is a TMESH, len member == # vertices, but here it's # of triangle... So, for each tri * 3 vertices ...
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for (i = 0; i < (modelCube.len*3); i += 3) {
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poly = (POLY_GT3 *)nextpri;
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// Initialize the primitive and set its color values
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SetPolyGT3(poly);
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((POLY_GT3 *)poly)->tpage = getTPage(tim_cube.mode&0x3, 0,
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tim_cube.prect->x,
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tim_cube.prect->y
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);
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setRGB0(poly, modelCube.c[i].r , modelCube.c[i].g , modelCube.c[i].b);
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setRGB1(poly, modelCube.c[i+1].r, modelCube.c[i+1].g, modelCube.c[i+1].b);
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setRGB2(poly, modelCube.c[i+2].r, modelCube.c[i+2].g, modelCube.c[i+2].b);
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setUV3(poly, modelCube.u[i].vx, modelCube.u[i].vy,
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modelCube.u[i+1].vx, modelCube.u[i+1].vy,
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modelCube.u[i+2].vx, modelCube.u[i+2].vy);
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// Rotate, translate, and project the vectors and output the results into a primitive
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OTz = RotTransPers(&modelCube_mesh[modelCube_index[t]] , (long*)&poly->x0, &p, &Flag);
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OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+1]], (long*)&poly->x1, &p, &Flag);
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OTz += RotTransPers(&modelCube_mesh[modelCube_index[t+2]], (long*)&poly->x2, &p, &Flag);
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// Sort the primitive into the OT
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OTz /= 3;
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if ((OTz > 0) && (OTz < OTLEN))
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AddPrim(&ot[db][OTz-2], poly);
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nextpri += sizeof(POLY_GT3);
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t+=3;
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}
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dr_mode = (DR_MODE *)nextpri;
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setDrawMode(dr_mode,1,0, getTPage(tim_cube.mode&0x3, 0,
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tim_cube.prect->x,
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tim_cube.prect->y), &tws); //set texture window
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AddPrim(&ot[db], dr_mode);
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nextpri += sizeof(DR_MODE);
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FntPrint("Hello textured cube!\n");
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FntFlush(-1);
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display();
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}
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return 0;
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}
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