Commit: 2549a3bb8ff1f70b45d2da797ea1494f2c254074
Parent: d50d8016be03b09434515b89b40e9671ed8fe4a1
Author: Randy Palamar
Date: Mon, 26 May 2025 06:32:56 -0600
bake unit cube into source code
Diffstat:
| M | common.c | | | 112 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------- |
1 file changed, 94 insertions(+), 18 deletions(-)
diff --git a/common.c b/common.c
@@ -227,37 +227,34 @@ load_complex_texture(Arena arena, c8 *file_path, b32 multi_file, u32 width, u32
}
function RenderModel
-load_render_model(Arena arena, c8 *positions_file_name, c8 *indices_file_name, c8 *normals_file_name)
+render_model_from_arrays(f32 *vertices, f32 *normals, u16 *indices, u32 index_count)
{
RenderModel result = {0};
- str8 positions = os_read_whole_file(&arena, positions_file_name);
- str8 normals = os_read_whole_file(&arena, normals_file_name);
- str8 indices = os_read_whole_file(&arena, indices_file_name);
-
- result.elements = indices.len / sizeof(u16);
+ s32 buffer_size = index_count * (6 * sizeof(f32) + sizeof(u16));
+ s32 indices_offset = index_count * (6 * sizeof(f32));
+ s32 vert_size = index_count * 3 * sizeof(f32);
+ s32 ind_size = index_count * sizeof(u16);
- s32 buffer_size = positions.len + indices.len + normals.len;
-
- s32 el_offset = positions.len + normals.len;
- result.elements_offset = el_offset;
+ result.elements = index_count;
+ result.elements_offset = indices_offset;
glCreateBuffers(1, &result.buffer);
glNamedBufferStorage(result.buffer, buffer_size, 0, GL_DYNAMIC_STORAGE_BIT);
- glNamedBufferSubData(result.buffer, 0, positions.len, positions.data);
- glNamedBufferSubData(result.buffer, positions.len, normals.len, normals.data);
- glNamedBufferSubData(result.buffer, el_offset, indices.len, indices.data);
+ glNamedBufferSubData(result.buffer, 0, vert_size, vertices);
+ glNamedBufferSubData(result.buffer, vert_size, vert_size, normals);
+ glNamedBufferSubData(result.buffer, indices_offset, ind_size, indices);
glCreateVertexArrays(1, &result.vao);
- glVertexArrayVertexBuffer(result.vao, 0, result.buffer, 0, 3 * sizeof(f32));
- glVertexArrayVertexBuffer(result.vao, 1, result.buffer, positions.len, 3 * sizeof(f32));
+ glVertexArrayVertexBuffer(result.vao, 0, result.buffer, 0, 3 * sizeof(f32));
+ glVertexArrayVertexBuffer(result.vao, 1, result.buffer, vert_size, 3 * sizeof(f32));
glVertexArrayElementBuffer(result.vao, result.buffer);
glEnableVertexArrayAttrib(result.vao, 0);
glEnableVertexArrayAttrib(result.vao, 1);
glVertexArrayAttribFormat(result.vao, 0, 3, GL_FLOAT, 0, 0);
- glVertexArrayAttribFormat(result.vao, 1, 3, GL_FLOAT, 0, positions.len);
+ glVertexArrayAttribFormat(result.vao, 1, 3, GL_FLOAT, 0, vert_size);
glVertexArrayAttribBinding(result.vao, 0, 0);
glVertexArrayAttribBinding(result.vao, 1, 0);
@@ -265,6 +262,18 @@ load_render_model(Arena arena, c8 *positions_file_name, c8 *indices_file_name, c
return result;
}
+function RenderModel
+load_render_model(Arena arena, c8 *positions_file_name, c8 *indices_file_name, c8 *normals_file_name)
+{
+ str8 positions = os_read_whole_file(&arena, positions_file_name);
+ str8 normals = os_read_whole_file(&arena, normals_file_name);
+ str8 indices = os_read_whole_file(&arena, indices_file_name);
+
+ RenderModel result = render_model_from_arrays((f32 *)positions.data, (f32 *)normals.data,
+ (u16 *)indices.data, indices.len / sizeof(u16));
+ return result;
+}
+
function void
scroll_callback(GLFWwindow *window, f64 x, f64 y)
{
@@ -485,8 +494,75 @@ init_viewer(ViewerContext *ctx)
reload_shader(&ctx->os, render_overlay, (sptr)overlay_rc, ctx->arena);
os_add_file_watch(&ctx->os, &ctx->arena, render_overlay, reload_shader, (sptr)overlay_rc);
- ctx->unit_cube = load_render_model(ctx->arena, "unit_cube_positions.bin",
- "unit_cube_indices.bin", "unit_cube_normals.bin");
+ f32 unit_cube_vertices[] = {
+ 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
+ };
+ f32 unit_cube_normals[] = {
+ 0.0f, 0.0f, -1.0f,
+ 0.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, -1.0f,
+ 0.0f, -1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f,
+ 0.0f, 1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f,
+ 0.0f, -1.0f, 0.0f,
+ 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, -1.0f,
+ 0.0f, 1.0f, 0.0f,
+ -1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, -1.0f,
+ 0.0f, -1.0f, 0.0f,
+ -1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f,
+ 0.0f, 1.0f, 0.0f,
+ -1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f,
+ 0.0f, -1.0f, 0.0f,
+ -1.0f, 0.0f, 0.0f
+ };
+ u16 unit_cube_indices[] = {
+ 1, 13, 19,
+ 1, 19, 7,
+ 9, 6, 18,
+ 9, 18, 21,
+ 23, 20, 14,
+ 23, 14, 17,
+ 16, 4, 10,
+ 16, 10, 22,
+ 5, 2, 8,
+ 5, 8, 11,
+ 15, 12, 0,
+ 15, 0, 3
+ };
+
+ ctx->unit_cube = render_model_from_arrays(unit_cube_vertices, unit_cube_normals,
+ unit_cube_indices, countof(unit_cube_indices));
}
function void