Code Refactor

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "tamtypes.h": "c"
+    }
+}

CMakeLists.txt

@@ -2,8 +2,10 @@ cmake_minimum_required(VERSION 3.10)
 set(MAKE_TOOLCHAIN_FILE $PS2SDK/ps2dev.cmake)
 set(CMAKE_C_FLAGS_DEBUG -DDEBUG)
 project(helloworld)
-add_executable(helloworld.elf main.c)
+FILE(GLOB c_src src/**.c)
+add_executable(helloworld.elf ${c_src})
 target_link_libraries(helloworld.elf debug -ldebug -lgraph -ldma -ldraw)
+target_include_directories(helloworld.elf PUBLIC include/)
 add_custom_command(
     TARGET helloworld.elf
     POST_BUILD

include/gs.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <draw.h>
+
+struct draw_state {
+    int width;
+    int height;
+    framebuffer_t fb;
+    zbuffer_t zb;
+    int vmode;
+    int gmode;
+};
+
+int gs_init(struct draw_state *ds, int psm, int psmz);

src/gs.c

@@ -0,0 +1,29 @@
+#include "gs.h"
+#include <graph.h>
+#include <dma.h>
+
+int gs_init(struct draw_state *ds, int psm, int psmz) {
+    ds->fb.address = graph_vram_allocate(ds->width, ds->height, psm, GRAPH_ALIGN_PAGE);
+    ds->fb.width = ds->width;
+    ds->fb.height = ds->height;
+    ds->fb.psm = psm;
+    ds->fb.mask = 0;
+    ds->zb.address = graph_vram_allocate(ds->width, ds->height, psmz, GRAPH_ALIGN_PAGE);
+    ds->zb.enable = 0;
+    ds->zb.method = 0;
+    ds->zb.zsm = 0;
+    ds->zb.mask = 0;
+    graph_set_mode(ds->gmode, ds->vmode, GRAPH_MODE_FIELD, GRAPH_DISABLE);
+    graph_set_screen(0, 0, ds->width, ds->height);
+    graph_set_bgcolor(0, 0, 0);
+    graph_set_framebuffer_filtered(ds->fb.address, ds->width, psm, 0, 0);
+    graph_enable_output();
+    qword_t buf[100];
+    qword_t *q = buf;
+    q = draw_setup_environment(q, 0, &ds->fb, &ds->zb);
+    q = draw_primitive_xyoffset(q, 0, 2048-(ds->width/2), 2048-(ds->height/2));
+    q = draw_finish(q);
+    dma_channel_send_normal(DMA_CHANNEL_GIF, buf, q-buf, 0, 0);
+    dma_wait_fast();
+    return 0;
+}

src/main.c

@@ -13,6 +13,7 @@
 #include <inttypes.h>
 #include <gs_gp.h>
 #include <stdlib.h>
+#include "gs.h"
 
 #define myftoi4(x) ((x)<<4)
 
@@ -28,6 +29,7 @@
 
 #define VID_W 640
 #define VID_H 448
+#define vid_buf_size (100 * 16)
 
 int print_buffer(qword_t *b, int len) {
     DEBUG_MSG("-- buffer\n");
@@ -39,43 +41,6 @@ int print_buffer(qword_t *b, int len) {
     return 0;
 }
 
-int gs_finish() {
-    qword_t buff[50];
-    qword_t *q = buff;
-    //TODO: Remove!
-    q = draw_finish(q);
-    dma_channel_send_normal(DMA_CHANNEL_GIF, buff, q-buff, 0, 0);
-    dma_wait_fast();
-    return 0;
-}
-zbuffer_t *z;
-int gs_init(int width, int height, int psm, int psmz, int vmode, int gmode) {
-    framebuffer_t fb;
-    fb.address = graph_vram_allocate(width, height, psm, GRAPH_ALIGN_PAGE);
-    fb.width = width;
-    fb.height = height;
-    fb.psm = psm;
-    fb.mask = 0;
-    z->address = graph_vram_allocate(width, height, psmz, GRAPH_ALIGN_PAGE);
-    z->enable = 0;
-    z->method = 0;
-    z->zsm = 0;
-    z->mask = 0;
-    graph_set_mode(gmode, vmode, GRAPH_MODE_FIELD, GRAPH_DISABLE);
-    graph_set_screen(0, 0, width, height);
-    graph_set_bgcolor(0, 0, 0);
-    graph_set_framebuffer_filtered(fb.address, width, psm, 0, 0);
-    graph_enable_output();
-    qword_t buf[100];
-    qword_t *q = buf;
-    q = draw_setup_environment(q, 0, &fb, z);
-    q = draw_primitive_xyoffset(q, 0, 2048-(VID_W/2), 2048-(VID_H/2));
-    q = draw_finish(q);
-    dma_channel_send_normal(DMA_CHANNEL_GIF, buf, q-buf, 0, 0);
-    dma_wait_fast();
-    return 0;
-}
-
 static int verts[] = {
     100, 100, 0,
     300, 100, 0,
@@ -90,15 +55,7 @@ static int verts[] = {
 uint64_t red = 0xf0;
 uint64_t blue = 0x0f;
 uint64_t green = 0xf0;
-int draw() {
-
-
-    qword_t buf[50];
-    qword_t *q = buf;
-    q = draw_disable_tests(q, 0, z);
-    q = draw_clear(q, 0, 2048.0f - 320, 2048.0f - 244, VID_W, VID_H, 20, 20, 20);
-    //q = draw_enable_tests(q, 0, z);
-    // GIFTag header - 3x(col, pos)
+qword_t *draw(qword_t *q) {
     q->dw[0] = 0xD000000000000001;
     q->dw[1] = 0x0005151515151510;
     q++;
@@ -123,12 +80,7 @@ int draw() {
         q->dw[1] = z; 
         q++;
     }
-    q = draw_finish(q);
-    print_buffer(buf, q-buf);
-    dma_channel_send_normal(DMA_CHANNEL_GIF, buf, q-buf, 0, 0);
-    dma_wait_fast();
-    //gs_finish();
-    return 0;
+    return q;
 }
 
 int main() {
@@ -142,20 +94,33 @@ int main() {
     dma_channel_fast_waits(DMA_CHANNEL_GIF);
     DEBUG_MSG("DMA Initialized...\n");
     // initialize graphics mode
-    gs_init(VID_W, VID_H, GS_PSM_32, GS_PSMZ_24, GRAPH_MODE_NTSC, GRAPH_MODE_INTERLACED);
+    struct draw_state state = {0};
+    state.width = VID_W;
+    state.height = VID_H;
+    state.gmode = GRAPH_MODE_INTERLACED;
+    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
 
-    z = malloc(sizeof(zbuffer_t));
-
+    qword_t *buf = malloc(vid_buf_size);
+    graph_wait_vsync();
     while(1) {
+        dma_wait_fast();
         red++;
         if(red > 0xFF) {
             red = 0;
         }
-        draw();
+        qword_t *q = buf;
+        q = draw_disable_tests(q, 0, &state.zb);
+        q = draw_clear(q, 0, 2048.0f - 320, 2048.0f - 244, VID_W, VID_H, 20, 20, 20);
+        q = draw(q);
+        q = draw_finish(q);
+        dma_channel_send_normal(DMA_CHANNEL_GIF, buf, q-buf, 0, 0);
+        draw_wait_finish();
+
         graph_wait_vsync();
     }
 }