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-rw-r--r--gastro/src/main.c200
1 files changed, 3 insertions, 197 deletions
diff --git a/gastro/src/main.c b/gastro/src/main.c
index af2e3aa..b0caf7c 100644
--- a/gastro/src/main.c
+++ b/gastro/src/main.c
@@ -6,204 +6,18 @@
#include <lcq/qoi.h>
#include <lcq/gastro.h>
+#include <lcq/gastro/test.h>
/* #include "../converted_model.h" */
-i64 off = 0;
-qoi_color *TEXTURE;
-i64 TEXTURE_WIDTH;
-i64 TEXTURE_HEIGHT;
-
-#define QUADIDX(p0, p1, p2, p3) p0, p1, p2, p2, p3, p0
-#define COLOR(r, g, b) gastro_fix_new(r), gastro_fix_new(g), gastro_fix_new(b)
-static void draw_quad(gastro_ctx *ctx, gastro_program *p) {
- gastro_fix sz = GASTRO_FIX_HALF;
- gastro_fix verts[] = {
- /* front */
- -sz, -sz, -sz, 0, 0,
- +sz, -sz, -sz, GASTRO_FIX_ONE, 0,
- +sz, +sz, -sz, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -sz, +sz, -sz, 0, GASTRO_FIX_ONE
- };
- i64 idxs[] = {
- QUADIDX(0, 1, 2, 3), /* front */
- };
- gastro_render_triangles(ctx, p, verts, 5, idxs, 2);
-}
-static void draw_cube(gastro_ctx *ctx, gastro_program *p) {
- static gastro_fix verts[] = {
- /* front */
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- /* right */
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- /* left */
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- /* top */
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- /* bottom */
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, 0,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- /* back */
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE
- };
- static i64 idxs[] = {
- QUADIDX(0, 1, 2, 3), /* front */
- QUADIDX(4, 5, 6, 7), /* right */
- QUADIDX(8, 9, 10, 11), /* left */
- QUADIDX(12, 13, 14, 15), /* top */
- QUADIDX(16, 17, 18, 19), /* bottom */
- QUADIDX(20, 21, 22, 23) /* back */
- };
- gastro_render_triangles(ctx, p, verts, 5, idxs, 12);
-}
-static void draw_pyramid(gastro_ctx *ctx, gastro_program *p) {
- static gastro_fix verts[] = {
- /* front */
- 0, +GASTRO_FIX_HALF, 0, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- /* right */
- 0, +GASTRO_FIX_HALF, 0, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- /* left */
- 0, +GASTRO_FIX_HALF, 0, 0, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- /* back */
- 0, +GASTRO_FIX_HALF, 0, 0, 0,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- /* bottom */
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, 0, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, GASTRO_FIX_ONE, 0,
- +GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, GASTRO_FIX_ONE, GASTRO_FIX_ONE,
- -GASTRO_FIX_HALF, -GASTRO_FIX_HALF, +GASTRO_FIX_HALF, 0, GASTRO_FIX_ONE,
- };
- static i64 idxs[] = {
- 0, 1, 2,
- 3, 4, 5,
- 6, 7, 8,
- 9, 10, 11,
- QUADIDX(12, 13, 14, 15),
- };
- gastro_render_triangles(ctx, p, verts, 5, idxs, 6);
-}
-
-static gastro_vec4 vertex_shader(gastro_ctx *ctx, gastro_vec3 in, gastro_fix *attrs, i64 attrs_len) {
- gastro_fix x = gastro_fix_from_double((double) off / 1000.0);
- gastro_vec4 v = gastro_vec4_new(in.x, in.y, in.z, GASTRO_FIX_ONE);
- gastro_mat4x4 scale = gastro_mat4x4_new(
- gastro_fix_from_double(1.0), 0, 0, 0,
- 0, gastro_fix_from_double(1.0), 0, 0,
- 0, 0, gastro_fix_from_double(1.0), 0,
- 0, 0, 0, GASTRO_FIX_ONE
- );
- u8 theta = (u8) (off / 4);
- /* u8 theta = 13; */
- gastro_mat4x4 rot = gastro_mat4x4_new(
- GASTRO_FIX_ONE, 0, 0, 0,
- 0, gastro_cos(theta), -gastro_sin(theta), 0,
- 0, gastro_sin(theta), gastro_cos(theta), 0,
- 0, 0, 0, GASTRO_FIX_ONE
- );
- gastro_mat4x4 trans = gastro_mat4x4_new(
- GASTRO_FIX_ONE, 0, 0, gastro_fix_new(0), /* x,*/
- 0, GASTRO_FIX_ONE, 0, gastro_fix_new(1),
- 0, 0, GASTRO_FIX_ONE, gastro_fix_new(-3),
- 0, 0, 0, GASTRO_FIX_ONE
- );
- gastro_mat4x4 proj = gastro_mat4x4_new(
- GASTRO_FIX_ONE, 0, 0, 0,
- 0, GASTRO_FIX_ONE, 0, 0,
- 0, 0, GASTRO_FIX_ONE, 0,
- 0, 0, GASTRO_FIX_ONE, 0
- );
- v = gastro_mat4x4_mul_vec4(scale, v);
- v = gastro_mat4x4_mul_vec4(rot, v);
- v = gastro_mat4x4_mul_vec4(trans, v);
- v = gastro_mat4x4_mul_vec4(proj, v);
- return v;
-}
-
-static gastro_color fragment_shader_texture(gastro_ctx *ctx, gastro_vec3 in, gastro_fix *attrs, i64 attrs_len) {
- gastro_fix u = attrs[0];
- gastro_fix v = attrs[1];
- i64 x = gastro_fix_to_i64(gastro_fix_mul(gastro_fix_new(TEXTURE_WIDTH), u));
- i64 y = gastro_fix_to_i64(gastro_fix_mul(gastro_fix_new(TEXTURE_HEIGHT), v));
- qoi_color c = TEXTURE[y * TEXTURE_WIDTH + x];
- return gastro_color_new(c.r, c.g, c.b, c.a);
-}
-
-static gastro_color fragment_shader_teapot(gastro_ctx *ctx, gastro_vec3 in, gastro_fix *attrs, i64 attrs_len) {
- u8 col = (u8) gastro_fix_to_i64(
- gastro_fix_mul(
- gastro_fix_new(0xff),
- gastro_fix_div(in.z, gastro_fix_new(8))
- )
- );
- return gastro_color_new(0xff - col, 0xff - col, 0xff - col, 0xff);
-}
-
-void load_image(char *path) {
- FILE *f;
- u8 *buf;
- i64 len;
- qoi_decoder q;
- qoi_header h;
- qoi_color *pixels;
- if (!(f = fopen(path, "r"))) {
- fprintf(stderr, "failed to open file: %s\n", path);
- return;
- }
- fseek(f, 0, SEEK_END);
- len = ftell(f);
- fseek(f, 0, SEEK_SET);
- buf = calloc((size_t) len, sizeof(u8));
- fread(buf, sizeof(u8), (size_t) len, f);
- qoi_decoder_new(&q, buf, len);
- if (!qoi_decode_header(&q, &h)) {
- fprintf(stderr, "failed to decode header\n");
- return;
- }
- pixels = calloc(h.width * h.height, sizeof(qoi_color));
- qoi_decode(&q, &h, pixels);
- TEXTURE = pixels;
- TEXTURE_WIDTH = h.width;
- TEXTURE_HEIGHT = h.height;
-}
-
int main(int argc, char **argv) {
gastro_ctx ctx;
u32 width = 256, height = 256;
gastro_color *pixels = calloc(width * height, sizeof(gastro_color));
gastro_fix *depth = calloc(width * height, sizeof(gastro_fix));
- gastro_program p;
gastro_ctx_init(&ctx, width, height, pixels, depth);
- p.vertex = vertex_shader;
- p.fragment = fragment_shader_texture;
-
- load_image("mark2.qoi");
- /* gastro_draw_clear(&ctx, gastro_color_new(0, 0, 0, 0xff)); */
- /* draw_model(&ctx, &p); */
+ gastro_test_create();
InitWindow(800, 600, "test");
{
@@ -217,17 +31,9 @@ int main(int argc, char **argv) {
tex = LoadTextureFromImage(im);
SetTargetFPS(300);
while (!WindowShouldClose()) {
- i64 i;
Vector2 pos;
pos.x = 10; pos.y = 10;
- gastro_draw_clear(&ctx, gastro_color_new(0, 0, 0, 0xff));
- for (i = 0; i < 1; ++i) {
- draw_pyramid(&ctx, &p);
- }
- /* draw_quad(&ctx, &p); */
- /* draw_model(&ctx, &p); */
- off += 1;
- off %= 256 * 64;
+ gastro_test_render(&ctx);
BeginDrawing();
ClearBackground(RED);
UpdateTexture(tex, ctx.pixels);
generated by cgit v1.3.1 (git 2.54.0) at 2026-09-02 02:52:31 +0000