starting on cube

2 files changed, 87 insertions, 8 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;
+}
\ No newline at end of file
diff --git a/examples/triangle.c b/examples/triangle.c
index 401b5ac..e5cf92d 100644
--- a/examples/triangle.c
+++ b/examples/triangle.c
@@ -2,21 +2,39 @@
 
 #include <celeritas.h>
 
-static vec4 vertices[] = {
-  {-0.5f, -0.5f, 0.0f, 1.0},
-  { 0.5f, -0.5f, 0.0f, 1.0},
-  { 0.0f,  0.5f, 0.0f, 1.0}
-};
+// static vec4 vertices[] = {
+//   {-0.5f, -0.5f, 0.0f, 1.0},
+//   { 0.5f, -0.5f, 0.0f, 1.0},
+//   { 0.0f,  0.5f, 0.0f, 1.0}
+// };
+
+typedef struct VertexData {
+  vec4 position;
+  vec2 texCoords;
+  f32 pad1;
+  f32 pad2;
+} VertexData;
+
+VertexData squareVertices[] = {
+        {{-0.5, -0.5,  0.5, 1.0f}, {0.0f, 0.0f}, 0.0, 0.0},
+        {{-0.5,  0.5,  0.5, 1.0f}, {0.0f, 1.0f}, 0.0, 0.0},
+        {{ 0.5,  0.5,  0.5, 1.0f}, {1.0f, 1.0f}, 0.0, 0.0},
+        {{-0.5, -0.5,  0.5, 1.0f}, {0.0f, 0.0f}, 0.0, 0.0},
+        {{ 0.5,  0.5,  0.5, 1.0f}, {1.0f, 1.0f}, 0.0, 0.0},
+        {{ 0.5, -0.5,  0.5, 1.0f}, {1.0f, 0.0f}, 0.0, 0.0}
+    };
 
 pipeline_handle draw_pipeline;
 buf_handle tri_vert_buffer;
+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, tri_vert_buffer);
-  ral_encode_draw_tris(enc, 0, 3);
+  ral_encode_set_texture(enc, texture, 0);
+  ral_encode_draw_tris(enc, 0, 6);
   ral_encoder_finish_and_submit(enc);
 }
 
@@ -43,9 +61,13 @@ int main() {
 
   draw_pipeline = ral_gfx_pipeline_create(pipeline_desc);
 
+  // load texture from file
+  texture = ral_texture_load_from_file("assets/textures/mc_grass.jpeg");
+
   // create our buffer to hold vertices
-  printf("size of vertices %ld\n", sizeof(vec4) * 3);
-  tri_vert_buffer = ral_buffer_create(sizeof(vec4) * 3, &vertices);
+  size_t buffer_size = sizeof(VertexData) * 6;
+  printf("size of vertices %ld\n", buffer_size);
+  tri_vert_buffer = ral_buffer_create(buffer_size, &squareVertices);
 
   while (!app_should_exit()) {
     glfwPollEvents();