delete documentation workflow

1 files changed, 161 insertions, 0 deletions

diff --git a/archive/src/render/skybox.c b/archive/src/render/skybox.c
new file mode 100644
index 0000000..b4e1e42
--- /dev/null
+++ b/archive/src/render/skybox.c
@@ -0,0 +1,161 @@
+#include "skybox.h"
+#include <assert.h>
+#include "file.h"
+#include "glad/glad.h"
+#include "log.h"
+#include "maths.h"
+#include "primitives.h"
+#include "ral_common.h"
+#include "ral_impl.h"
+#include "ral_types.h"
+#include "render.h"
+#include "render_types.h"
+#include "shader_layouts.h"
+
+float skyboxVertices[] = {
+  // positions
+  -1.0f, 1.0f,  -1.0f, -1.0f, -1.0f, -1.0f, 1.0f,  -1.0f, -1.0f,
+  1.0f,  -1.0f, -1.0f, 1.0f,  1.0f,  -1.0f, -1.0f, 1.0f,  -1.0f,
+
+  -1.0f, -1.0f, 1.0f,  -1.0f, -1.0f, -1.0f, -1.0f, 1.0f,  -1.0f,
+  -1.0f, 1.0f,  -1.0f, -1.0f, 1.0f,  1.0f,  -1.0f, -1.0f, 1.0f,
+
+  1.0f,  -1.0f, -1.0f, 1.0f,  -1.0f, 1.0f,  1.0f,  1.0f,  1.0f,
+  1.0f,  1.0f,  1.0f,  1.0f,  1.0f,  -1.0f, 1.0f,  -1.0f, -1.0f,
+
+  -1.0f, -1.0f, 1.0f,  -1.0f, 1.0f,  1.0f,  1.0f,  1.0f,  1.0f,
+  1.0f,  1.0f,  1.0f,  1.0f,  -1.0f, 1.0f,  -1.0f, -1.0f, 1.0f,
+
+  -1.0f, 1.0f,  -1.0f, 1.0f,  1.0f,  -1.0f, 1.0f,  1.0f,  1.0f,
+  1.0f,  1.0f,  1.0f,  -1.0f, 1.0f,  1.0f,  -1.0f, 1.0f,  -1.0f,
+
+  -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, 1.0f,  1.0f,  -1.0f, -1.0f,
+  1.0f,  -1.0f, -1.0f, -1.0f, -1.0f, 1.0f,  1.0f,  -1.0f, 1.0f
+};
+
+static const char* faces[6] = { "assets/demo/skybox/right.jpg", "assets/demo/skybox/left.jpg",
+                                "assets/demo/skybox/top.jpg",   "assets/demo/skybox/bottom.jpg",
+                                "assets/demo/skybox/front.jpg", "assets/demo/skybox/back.jpg" };
+
+Skybox Skybox_Create(const char** face_paths, int n) {
+  INFO("Creating a skybox");
+  CASSERT_MSG(
+      n == 6,
+      "We only support full cubemaps for now");  // ! we're only supporting a full cubemap for now
+
+  // -- cube verts
+  Geometry geom = { .format = VERTEX_POS_ONLY,  // doesnt matter
+                    .has_indices = false,
+                    .indices = NULL,
+                    .vertices = Vertex_darray_new(36) };
+  for (u32 i = 0; i < (36 * 3); i += 3) {
+    Vertex_darray_push(
+        geom.vertices,
+        (Vertex){ .pos_only = { .position = vec3(skyboxVertices[i], skyboxVertices[i + 1],
+                                                 skyboxVertices[i + 2]) } });
+  }
+  Mesh cube = Mesh_Create(&geom, false);
+
+  // -- cubemap texture
+  TextureHandle handle;
+  GPU_Texture* tex = GPU_TextureAlloc(&handle);
+  glBindTexture(GL_TEXTURE_CUBE_MAP, tex->id);
+
+  for (unsigned int i = 0; i < n; i++) {
+    TextureData data = TextureDataLoad(face_paths[i], false);
+    assert(data.description.format == TEXTURE_FORMAT_8_8_8_RGB_UNORM);
+    glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB, data.description.extents.x,
+                 data.description.extents.y, 0, GL_RGB, GL_UNSIGNED_BYTE, data.image_data);
+  }
+  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+  glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+  // shader pipeline
+  GPU_RenderpassDesc rpass_desc = {
+    .default_framebuffer = true,
+  };
+  GPU_Renderpass* pass = GPU_Renderpass_Create(rpass_desc);
+
+  arena scratch = arena_create(malloc(1024 * 1024), 1024 * 1024);
+
+  Str8 vert_path = str8("assets/shaders/skybox.vert");
+  Str8 frag_path = str8("assets/shaders/skybox.frag");
+  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")
+  }
+
+  ShaderDataLayout camera_data = Binding_Camera_GetLayout(NULL);
+  ShaderDataLayout shader_data = Skybox_GetLayout(NULL);
+
+  VertexDescription builder = { .debug_label = "pos only" };
+  VertexDesc_AddAttr(&builder, "inPosition", ATTR_F32x3);
+  builder.use_full_vertex_size = true;
+
+  GraphicsPipelineDesc pipeline_desc = {
+    .debug_name = "Skybox pipeline",
+    .vertex_desc = builder,
+    .data_layouts = { shader_data, camera_data },
+    .data_layouts_count = 2,
+    .vs = { .debug_name = "Skybox Vertex Shader",
+            .filepath = vert_path,
+            .code = vertex_shader.contents },
+    .fs = { .debug_name = "Skybox Fragment Shader",
+            .filepath = frag_path,
+            .code = fragment_shader.contents },
+    .wireframe = false,
+    .depth_test = true,
+  };
+
+  GPU_Pipeline* pipeline = GPU_GraphicsPipeline_Create(pipeline_desc, pass);
+
+  return (Skybox){ .cube = cube, .texture = handle, .pipeline = pipeline };
+}
+
+Skybox Skybox_Default() { return Skybox_Create(faces, 6); }
+
+void Skybox_Draw(Skybox* skybox, Camera camera) {
+  GPU_CmdEncoder* enc = GPU_GetDefaultEncoder();
+  glDepthFunc(GL_LEQUAL);
+  GPU_CmdEncoder_BeginRender(enc, skybox->pipeline->renderpass);
+  GPU_EncodeBindPipeline(enc, skybox->pipeline);
+  GPU_EncodeSetDefaults(enc);
+
+  // Shader data
+
+  Mat4 view, proj;
+  u32x2 dimensions = GPU_Swapchain_GetDimensions();
+  Camera_ViewProj(&camera, dimensions.x, dimensions.y, &view, &proj);
+  Mat4 new = mat4_ident();
+  new.data[0] = view.data[0];
+  new.data[1] = view.data[1];
+  new.data[2] = view.data[2];
+  new.data[4] = view.data[4];
+  new.data[5] = view.data[5];
+  new.data[6] = view.data[6];
+  new.data[8] = view.data[8];
+  new.data[9] = view.data[9];
+  new.data[10] = view.data[10];
+
+  Binding_Camera camera_data = { .view = new,
+                                 .projection = proj,
+                                 .viewPos = vec4(camera.position.x, camera.position.y,
+                                                 camera.position.z, 1.0) };
+  GPU_EncodeBindShaderData(enc, 0, Binding_Camera_GetLayout(&camera_data));
+
+  SkyboxUniforms uniforms = { .cubemap = skybox->texture };
+  ShaderDataLayout skybox_data = Skybox_GetLayout(&uniforms);
+  GPU_EncodeBindShaderData(enc, 0, skybox_data);
+
+  GPU_EncodeSetVertexBuffer(enc, skybox->cube.vertex_buffer);
+  GPU_EncodeSetIndexBuffer(enc, skybox->cube.index_buffer);
+
+  GPU_EncodeDrawTris(enc, 36);
+
+  GPU_CmdEncoder_EndRender(enc);
+  glDepthFunc(GL_LESS);
+}