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Reformat and reorganise before writing shadow code

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Abdelrahman Said
2024-09-13 23:54:46 +01:00
parent c739864489
commit 98323da649
9 changed files with 100 additions and 231 deletions
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27
src/model/render.c
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@@ -8,8 +8,6 @@
#include "vec.h"
#include <math.h>
internal M4x4f g_viewport;
typedef struct triangle_bbox TriangleBBox;
struct triangle_bbox {
u64 x0;
@@ -43,8 +41,6 @@ bool init_render(Arena *arena, Render *render, u64 width, u64 height) {
f32 inf = -INFINITY;
clear_buffer(&(render->depth), &inf);
g_viewport = viewport(0, 0, width, height);
return true;
}
@@ -63,13 +59,11 @@ internal void render_triangle(const Triangle *triangle, const Model *model,
Image *img = &(render->img);
VertexData vertices[TRIANGLE_VERTICES];
for (u64 i = 0; i < TRIANGLE_VERTICES; ++i) {
// clang-format off
vertices[i].position = list_get(model->vertices, triangle->positions[i]);
vertices[i].normal = list_get(model->normals, triangle->normals[i]);
vertices[i].uv = list_get(model->texture_coordinates, triangle->coordinates[i]);
// clang-format on
vertices[i].normal = list_get(model->normals, triangle->normals[i]);
vertices[i].uv = list_get(model->texture_coordinates, triangle->coordinates[i]);
vertices[i] = run_vertex_shader(shader, &vertices[i], i, model);
vertices[i] = run_vertex_shader(shader, &vertices[i], i, model);
}
if (render_type == RENDER_TYPE_WIREFRAME) {
@@ -81,8 +75,7 @@ internal void render_triangle(const Triangle *triangle, const Model *model,
//
// draw_line(img, (u64)v0.x, (u64)v0.y, (u64)v1.x, (u64)v1.y, colour);
// }
} else if (render_type == RENDER_TYPE_FILLED ||
render_type == RENDER_TYPE_SHADED) {
} else if (render_type == RENDER_TYPE_FILLED || render_type == RENDER_TYPE_SHADED) {
fill_triangle(render, shader, vertices, colour, model, render_type);
}
}
@@ -112,14 +105,13 @@ internal void fill_triangle(Render *render, ShaderID shader,
for (u64 y = bbox.y0; y <= bbox.y1; ++y) {
for (u64 x = bbox.x0; x <= bbox.x1; ++x) {
point = (V2f){x, y};
coords =
get_barycentric_coords(vp_verts[0], vp_verts[1], vp_verts[2], point);
coords = get_barycentric_coords(vp_verts[0], vp_verts[1], vp_verts[2], point);
if (coords.x < 0.0f || coords.y < 0.0f || coords.z < 0.0f) {
continue;
}
z = 0.0f;
z += vertices[0].position.z * coords.x +
z = 0.0f;
z += vertices[0].position.z * coords.x +
vertices[1].position.z * coords.y +
vertices[2].position.z * coords.z;
zbuf = get_pixel(f32, &(render->depth), x, y);
@@ -167,10 +159,7 @@ internal V3f get_barycentric_coords(V2f a, V2f b, V2f c, V2f p) {
}
internal V2f get_viewport_vertex(const V3f *vertex, const Image *img) {
V4f vh = {.x = vertex->x, .y = 0.0f - vertex->y, .z = vertex->z, .w = 1.0f};
vh = mat4x4_mul_vec4(g_viewport, vh);
V3f output = project_vec4(vh);
V3f output = *vertex;
output.x = clamp(output.x, 0.0f, img->width);
output.y = clamp(output.y, 0.0f, img->height);