working on loading mesh data

ISO/Assets/cube.obj

@@ -0,0 +1,46 @@
+# Blender 4.4.0
+# www.blender.org
+mtllib Untitled.mtl
+o Cube
+v 1.000000 1.000000 -1.000000
+v 1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+v -1.000000 -1.000000 -1.000000
+v -1.000000 1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+vn -0.0000 1.0000 -0.0000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -1.0000 -0.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 -1.0000
+vt 0.875000 0.500000
+vt 0.625000 0.750000
+vt 0.625000 0.500000
+vt 0.375000 1.000000
+vt 0.375000 0.750000
+vt 0.625000 0.000000
+vt 0.375000 0.250000
+vt 0.375000 0.000000
+vt 0.375000 0.500000
+vt 0.125000 0.750000
+vt 0.125000 0.500000
+vt 0.625000 0.250000
+vt 0.875000 0.750000
+vt 0.625000 1.000000
+s 0
+usemtl Material
+f 5/1/1 3/2/1 1/3/1
+f 3/2/2 8/4/2 4/5/2
+f 7/6/3 6/7/3 8/8/3
+f 2/9/4 8/10/4 6/11/4
+f 1/3/5 4/5/5 2/9/5
+f 5/12/6 2/9/6 6/7/6
+f 5/1/1 7/13/1 3/2/1
+f 3/2/2 7/14/2 8/4/2
+f 7/6/3 5/12/3 6/7/3
+f 2/9/4 4/5/4 8/10/4
+f 1/3/5 3/2/5 4/5/5
+f 5/12/6 1/3/6 2/9/6

include/mesh.h

@@ -0,0 +1,6 @@
+#include "math3d.h"
+struct mesh {
+    VECTOR *verticies;
+};
+
+int load_file(const char *fname, char *b, int b_len);

src/main.c

@@ -11,6 +11,7 @@
 #include <gs_gp.h>
 #include <stdlib.h>
 #include "gs.h"
+#include "mesh.h"
 
 #define myftoi4(x) ((x)<<4)
 
@@ -53,14 +54,18 @@ uint64_t red = 0xf0;
 uint64_t blue = 0x0f;
 uint64_t green = 0xf0;
 qword_t *draw(qword_t *q) {
-    q->dw[0] = 0xD000000000000001;
+    q->dw[0] = 0x1000000000000001;
-    q->dw[1] = 0x0005151515151510;
+    q->dw[1] = 0x0000000000000000;
     q++;
 
     q->dw[0] = GS_PRIM_TRIANGLE;
     q->dw[1] = 0;
     q++;
 
+    q->dw[0] = 0x6000000000000002;
+    q->dw[1] = 0x0000000000515151;
+    q++;
+
     int cx = myftoi4(2048 - (VID_W/2));
     int cy = myftoi4(2048 - (VID_H/2));
 
@@ -98,6 +103,8 @@ int main() {
     state.vmode = GRAPH_MODE_NTSC;
     gs_init(&state, GS_PSM_32, GS_PSMZ_24);
     DEBUG_MSG("GS Initialized...\n");
+
+
     // clear screen
 
     // build buffer with triangle data
@@ -105,10 +112,11 @@ int main() {
     qword_t *buf = malloc(vid_buf_size);
     graph_wait_vsync();
     while(1) {
+
         dma_wait_fast();
-        green++;
+        red++;
-        if(green > 0xFF) {
+        if(red > 0xFF) {
-            green = 0;
+            red = 0;
         }
         qword_t *q = buf;
         q = draw_disable_tests(q, 0, &state.zb);

src/mesh.c

@@ -0,0 +1,15 @@
+#include <mesh.h>
+#include <stdio.h>
+
+int load_file(const char *fname, char *b, int b_len) {
+    FILE *f = fopen(fname, "rb");
+    fseek(f, 0, SEEK_END);
+    int len = ftell(f);
+    fseek(f, 0, SEEK_SET);
+    if (len >= b_len) {
+        return 0;
+    }
+    size_t byte_read = fread(b, 1, len, f);
+    fclose(f);
+    return byte_read;
+}