diff options
Diffstat (limited to 'Rend/demos/rend_teapot.c')
| -rw-r--r-- | Rend/demos/rend_teapot.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/Rend/demos/rend_teapot.c b/Rend/demos/rend_teapot.c new file mode 100644 index 0000000..63f96ee --- /dev/null +++ b/Rend/demos/rend_teapot.c @@ -0,0 +1,172 @@ + +#include "teapot.h" + +#include "../rend.h" +#include "../rend.c" +#include <stddef.h> + +#define PODIUM_IMPLEMENTATION +#define P_MODULE_MATH +#define P_MODULE_VULKAN +#include "podium.h" + +int main() { + + const char *texture_path = "wal.jpg"; + if (!p_file_exists(texture_path)) { + texture_path = "demos/wal.jpg"; + } + typedef struct CoolPushConstants { + P_Mat4 MVP; + } CoolPushConstants; + + typedef struct CoolVertex { + float pos[3]; + float uv[2]; + } CoolVertex; + + CoolVertex cool_array[TEAPOT_VERTEX_COUNT]; + + for (uint32_t i = 0; i < TEAPOT_VERTEX_COUNT; ++i) { + cool_array[i].pos[0] = teapot_positions[i][0]; + cool_array[i].pos[1] = teapot_positions[i][1]; + cool_array[i].pos[2] = teapot_positions[i][2]; + + float u = teapot_positions[i][0] / teapot_positions[i][2]; + float v = teapot_positions[i][1] / teapot_positions[i][2]; + + cool_array[i].uv[0] = u; + cool_array[i].uv[1] = v; + } + + size_t vert_size = TEAPOT_VERTEX_COUNT * sizeof *cool_array; + size_t ind_size = TEAPOT_INDEX_COUNT * sizeof *teapot_indices; + + RendBuffer vert_buf = rend_buffer_create(renderer, vert_size, REND_BUFFER_VERTEX, true); + RendBuffer ind_buf = rend_buffer_create(renderer, ind_size, REND_BUFFER_INDEX, true); + rend_buffer_write(renderer, &vert_buf, cool_array, vert_size, 0); + rend_buffer_write(renderer, &ind_buf, teapot_indices, ind_size, 0); + + int tex_w, tex_h, tex_channels; + unsigned char *pixels = stbi_load(texture_path, &tex_w, &tex_h, &tex_channels, 4); + RendTexture texture = rend_texture_create(renderer, tex_w, tex_h, 1, 0, 1, REND_FORMAT_R8G8B8A8_SRGB); + if (pixels) { + rend_texture_copy_data(renderer, &texture, pixels, (size_t)tex_w * tex_h * 4); + stbi_image_free(pixels); + } + + RendPipeline basic_pipeline = rend_pipeline_create_graphics_spirv( + renderer, + basic_vert, basic_vert_bytes, + basic_frag, basic_frag_bytes, + &(RendVertexBinding){ .binding = 0, .stride = sizeof(CoolVertex), .input_rate = REND_INPUT_RATE_VERTEX }, 1, + (RendVertexAttributes[]){ + { .binding = 0, .location = 0, .format = REND_FORMAT_3_SFLOAT32, .offset = offsetof(CoolVertex, pos) }, + { .binding = 0, .location = 1, .format = REND_FORMAT_2_SFLOAT32, .offset = offsetof(CoolVertex, uv) } + }, 2, + &(RendPushConstantInfo){ .offset = 0, .size = sizeof(CoolPushConstants) }, 1, + REND_POLYGON_MODE_FILL, + REND_CULL_MODE_NONE, + REND_TOPOLOGY_TRIANGLE_STRIP, + REND_FORMAT_UNDEFINED, + true + ); + + P_Mat4 view = p_mat4_translate((Vec3f){0.0f, 0.0f, -3.0f}); + P_Mat4 proj = p_mat4_perspective(P_PI_HALF, 800.0f / 600.0f, 0.1f, 100.0f); + proj.m[1 * 4 + 1] *= -1.0f; /* Vulkan clip space Y inversion fix */ + + bool running = true; + uint64_t frame_count = 0; + float angle = 0; + + bool pointer_down = false; + uint32_t last_pointer_x = 0; + uint32_t last_pointer_y = 0; + + uint16_t frames = 3; + while (running) { + + P_Event ev; + while (p_window_poll_event(win, &ev)) { + if (ev.type == P_EVENT_WINDOW_CLOSE) { + running = false; + break; + } + if (ev.type == P_EVENT_KEY_DOWN) { + switch (ev.key.key) { + case P_KEY_W: + view = p_mat4_translate_by(view, (Vec3f){0.0f, 0.0f, 0.1f}); + break; + case P_KEY_S: + view = p_mat4_translate_by(view, (Vec3f){0.0f, 0.0f, -0.1f}); + break; + case P_KEY_A: + view = p_mat4_translate_by(view, (Vec3f){0.1f, 0.0f, 0.0f}); + break; + case P_KEY_D: + view = p_mat4_translate_by(view, (Vec3f){-0.1f, 0.0f, 0.0f}); + break; + + } + break; + } + if (ev.type == P_EVENT_POINTER) { + if (ev.pointer.state == P_POINTER_PRESSED && ev.pointer.button == 1) { + pointer_down = true; + last_pointer_x = ev.pointer.x; + last_pointer_y = ev.pointer.y; + } else if (ev.pointer.state == P_POINTER_RELEASED && ev.pointer.button == 1) { + pointer_down = false; + } else if (ev.pointer.state == P_POINTER_MOVED) { + if (pointer_down) { + float dx = (float)((int)ev.pointer.x - (int)last_pointer_x); + float dy = (float)((int)ev.pointer.y - (int)last_pointer_y); + + float sensitivity = 0.005f; + float yaw = dx * sensitivity; + float pitch = dy * sensitivity; + + view = p_mat4_rotate_y_by(view, yaw); + view = p_mat4_mul(p_mat4_rotate_x(pitch), view); + + last_pointer_x = ev.pointer.x; + last_pointer_y = ev.pointer.y; + } + } + } + } + + angle += 0.05; + + P_Mat4 model = p_mat4_identity(); + model = p_mat4_rotate_y_by(model, angle * 0.5f); + + P_Mat4 mvp = p_mat4_mul(proj, p_mat4_mul(view, model)); + + CoolPushConstants pc = { + .MVP = mvp, + }; + + if (rend_renderer_frame_begin(renderer)) { + + rend_renderer_render_pass_begin(renderer, 0.5, 0.5, 0.5, 0.0); { + rend_pipeline_bind(basic_pipeline); + rend_pipeline_push_constants(basic_pipeline, &pc, sizeof pc); + rend_pipeline_bind_texture(basic_pipeline, &texture, 1, 0); + rend_pipeline_bind_vertex_buffer(basic_pipeline, 0, vert_buf, 0); + rend_pipeline_bind_index_buffer(basic_pipeline, ind_buf, 0, REND_INDEX_UINT16); + rend_pipeline_draw_indexed(basic_pipeline, TEAPOT_INDEX_COUNT, 0, 0, 1); + } rend_renderer_render_pass_end(renderer); + + rend_renderer_frame_end(renderer, NULL); + } + + } + + rend_texture_destroy(renderer, &texture); + rend_buffer_destroy(&vert_buf); + rend_buffer_destroy(&ind_buf); + + return 0; +} |