Merge pull request #14 from omnisci3nce/realign

Realign

1 files changed, 158 insertions, 0 deletions

diff --git a/examples/cube/ex_cube.c b/examples/cube/ex_cube.c
new file mode 100644
index 0000000..fc59e2d
--- /dev/null
+++ b/examples/cube/ex_cube.c
@@ -0,0 +1,158 @@
+#include <glfw3.h>
+
+#include "buf.h"
+#include "camera.h"
+#include "core.h"
+#include "file.h"
+#include "log.h"
+#include "maths.h"
+#include "maths_types.h"
+#include "mem.h"
+#include "primitives.h"
+#include "ral.h"
+#include "ral_types.h"
+#include "render.h"
+#include "render_types.h"
+
+extern core g_core;
+
+// Define the shader data
+typedef struct mvp_uniforms {
+  mat4 model;
+  mat4 view;
+  mat4 projection;
+} mvp_uniforms;
+typedef struct my_shader_bind_group {
+  mvp_uniforms mvp;
+  texture_handle tex;
+} my_shader_bind_group;
+
+// We also must create a function that knows how to return a `shader_data_layout`
+shader_data_layout mvp_uniforms_layout(void* data) {
+  my_shader_bind_group* d = (my_shader_bind_group*)data;
+  bool has_data = data != NULL;
+
+  shader_binding b1 = { .label = "mvp_uniforms",
+                        .type = SHADER_BINDING_BYTES,
+                        .stores_data = has_data,
+                        .data = { .bytes = { .size = sizeof(mvp_uniforms) } } };
+
+  shader_binding b2 = { .label = "texture_sampler",
+                        .type = SHADER_BINDING_TEXTURE,
+                        .stores_data = has_data };
+  if (has_data) {
+    b1.data.bytes.data = &d->mvp;
+    b2.data.texture.handle = d->tex;
+  }
+  return (shader_data_layout){ .name = "global_ubo", .bindings = { b1, b2 }, .bindings_count = 2 };
+}
+
+int main() {
+  core_bringup();
+  arena scratch = arena_create(malloc(1024 * 1024), 1024 * 1024);
+
+  DEBUG("render capacity %d", g_core.default_scene.renderables->capacity);
+
+  vec3 camera_pos = vec3(2., 2., 2.);
+  vec3 camera_front = vec3_normalise(vec3_negate(camera_pos));
+  camera cam = camera_create(camera_pos, camera_front, VEC3_Y, deg_to_rad(45.0));
+
+  vertex_description vertex_input = { .use_full_vertex_size = true };
+  vertex_input.debug_label = "Standard Static 3D Vertex Format";
+  vertex_desc_add(&vertex_input, "inPosition", ATTR_F32x3);
+  vertex_desc_add(&vertex_input, "inNormal", ATTR_F32x3);
+  vertex_desc_add(&vertex_input, "inTexCoords", ATTR_F32x2);
+
+  shader_data mvp_uniforms_data = { .data = NULL, .shader_data_get_layout = &mvp_uniforms_layout };
+
+  gpu_renderpass_desc pass_description = {};
+  gpu_renderpass* renderpass = gpu_renderpass_create(&pass_description);
+
+  str8 vert_path = str8lit("build/linux/x86_64/debug/cube.vert.spv");
+  str8 frag_path = str8lit("build/linux/x86_64/debug/cube.frag.spv");
+  str8_opt vertex_shader = str8_from_file(&scratch, vert_path);
+  str8_opt fragment_shader = str8_from_file(&scratch, frag_path);
+  if (!vertex_shader.has_value || !fragment_shader.has_value) {
+    ERROR_EXIT("Failed to load shaders from disk")
+  }
+
+  struct graphics_pipeline_desc pipeline_description = {
+    .debug_name = "Basic Pipeline",
+    .vertex_desc = vertex_input,
+    .data_layouts = { mvp_uniforms_data },
+    .data_layouts_count = 1,
+    .vs = { .debug_name = "Triangle Vertex Shader",
+            .filepath = vert_path,
+            .code = vertex_shader.contents,
+            .is_spirv = true },
+    .fs = { .debug_name = "Triangle Fragment Shader",
+            .filepath = frag_path,
+            .code = fragment_shader.contents,
+            .is_spirv = true },
+    .renderpass = renderpass,
+    .wireframe = false,
+    .depth_test = false
+  };
+  gpu_pipeline* gfx_pipeline = gpu_graphics_pipeline_create(pipeline_description);
+
+  // Geometry
+  geometry_data cube_data = geo_create_cuboid(f32x3(1, 1, 1));
+  mesh cube = mesh_create(&cube_data, false);
+
+  // Texture
+  texture_data tex_data = texture_data_load("assets/textures/texture.jpg", false);
+  texture_handle texture = texture_data_upload(tex_data, true);
+  printf("Texture %d", texture.raw);
+
+  // Main loop
+  while (!should_exit(&g_core)) {
+    input_update(&g_core.input);
+
+    if (!gpu_backend_begin_frame()) {
+      continue;
+    }
+    gpu_cmd_encoder* enc = gpu_get_default_cmd_encoder();
+    // begin recording
+    gpu_cmd_encoder_begin(*enc);
+    gpu_cmd_encoder_begin_render(enc, renderpass);
+    encode_bind_pipeline(enc, PIPELINE_GRAPHICS, gfx_pipeline);
+    encode_set_default_settings(enc);
+
+    static f32 x = 0.0;
+    x += 0.01;
+    quat rotation = quat_from_axis_angle(VEC3_Y, x, true);
+    mat4 translation = mat4_translation(vec3(-0.5, -0.5, -0.5));
+    mat4 model = mat4_rotation(rotation);
+    model = mat4_mult(translation, model);
+    mat4 view, proj;
+    camera_view_projection(&cam, g_core.renderer.swapchain.extent.width,
+                           g_core.renderer.swapchain.extent.height, &view, &proj);
+    mvp_uniforms mvp_data = { .model = model, .view = view, .projection = proj };
+    my_shader_bind_group shader_bind_data = { .mvp = mvp_data, .tex = texture };
+    mvp_uniforms_data.data = &shader_bind_data;
+    encode_bind_shader_data(enc, 0, &mvp_uniforms_data);
+
+    // Record draw calls
+    // -- NEW
+    draw_mesh(&cube, &model);
+    // -- OLD
+    /* encode_set_vertex_buffer(enc, triangle_vert_buf); */
+    /* encode_set_index_buffer(enc, triangle_index_buf); */
+    /* gpu_temp_draw(6); */
+
+    // End recording
+    gpu_cmd_encoder_end_render(enc);
+
+    gpu_cmd_buffer buf = gpu_cmd_encoder_finish(enc);
+    gpu_queue_submit(&buf);
+    // Submit
+    gpu_backend_end_frame();
+
+    // render_frame_end(&g_core.renderer);
+    // glfwSwapBuffers(core->renderer.window);
+  }
+
+  renderer_shutdown(&g_core.renderer);
+
+  return 0;
+}