starting on cube

1 files changed, 57 insertions, 0 deletions

diff --git a/examples/cube.c b/examples/cube.c
index e69de29..6642e2a 100644
--- a/examples/cube.c
+++ b/examples/cube.c
@@ -0,0 +1,57 @@
+#include <celeritas.h>
+
+// vertices
+
+pipeline_handle draw_pipeline;
+buf_handle cube_vbuf;
+tex_handle texture;
+
+void draw() {
+  render_pass_desc d = {};
+  gpu_encoder* enc = ral_render_encoder(d);
+  ral_encode_bind_pipeline(enc, draw_pipeline);
+  ral_encode_set_vertex_buf(enc, cube_vbuf);
+  ral_encode_set_texture(enc, texture, 0);
+  ral_encode_draw_tris(enc, 0, 36);
+  ral_encoder_finish_and_submit(enc);
+}
+
+int main() {
+  core_bringup("Celeritas Example: Triangle", NULL);
+
+  // create rendering pipeline
+  gfx_pipeline_desc pipeline_desc = {
+    .label = "Textured cube pipeline",
+    .vertex_desc = static_3d_vertex_format(),
+    .vertex = {
+      .source = NULL,
+      .is_spirv = false,
+      .entry_point = "cubeVertexShader",
+      .stage = STAGE_VERTEX,
+    },
+    .fragment = {
+      .source = NULL,
+      .is_spirv = false,
+      .entry_point = "cubeFragmentShader",
+      .stage = STAGE_FRAGMENT,
+    },
+  };
+
+  draw_pipeline = ral_gfx_pipeline_create(pipeline_desc);
+
+  // create the cube geometry
+  geometry cube = geo_cuboid(1.0, 1.0, 1.0);
+
+  // upload vertex data to the gpu
+  cube_vbuf = ral_buffer_create(64 * 36, cube.vertex_data);
+
+  while (!app_should_exit()) {
+    glfwPollEvents();
+
+    ral_frame_start();
+    ral_frame_draw(&draw);
+    ral_frame_end();
+  }
+
+  return 0;
+}
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