collada: render instance controllers

Makefile

@@ -40,7 +40,8 @@ OBJS = \
 	src/collada/scene.o \
 	src/collada/effect.o \
 	src/collada/node_state.o \
-	data/scenes/ship20/ship20.o
+	data/scenes/ship20/ship20.o \
+	data/scenes/noodle/noodle.o
 
 all: test.so
 

build_collada.sh

@@ -0,0 +1,11 @@
+set -eux
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   path/to/noodle.DAE \
+                   data/scenes/noodle/noodle.cpp \
+                   data/scenes/noodle/noodle.vtx \
+                   data/scenes/noodle/noodle.vjw \
+                   data/scenes/noodle/noodle.idx
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   include/data/scenes/noodle.h

data/scenes/ship20/ship20.cpp

@@ -23,7 +23,7 @@ light const light_omni003_light = {
 
 // shipple2_png
 image const image_shipple2_png = {
-  .resource_name = "data/scenes/ship20/shipple2.dds",
+  .uri = "data/scenes/ship20/shipple2.dds",
 };
 
 image const * const images[] = {

include/collada/scene.h

@@ -16,7 +16,7 @@ namespace collada::scene {
     unsigned int index_buffer;
 
     static_skinned * vertex_arrays;
-    int * vertex_buffer_strides;
+    int * vertex_buffer_strides_pnt;
 
     unsigned int * textures;
 
@@ -34,6 +34,12 @@ namespace collada::scene {
                        int const instance_materials_count);
     void draw_instance_geometries(types::instance_geometry const * const instance_geometries,
                                   int const instance_geometries_count);
+    void draw_skin(types::skin const& skin,
+                   types::instance_material const * const instance_materials,
+                   int const instance_materials_count);
+    void draw_instance_controllers(types::instance_controller const * const instance_controllers,
+                                   int const instance_controllers_count);
+
     void draw_node(types::node const & node);
     void draw();
   };

include/collada/types.h

@@ -108,7 +108,7 @@ namespace collada::types {
   //////////////////////////////////////////////////////////////////////
 
   struct image {
-    const char * resource_name;
+    const char * uri;
   };
 
   //////////////////////////////////////////////////////////////////////

include/data/scenes/noodle.h

@@ -0,0 +1,3 @@
+namespace noodle {
+extern collada::types::descriptor const descriptor;
+}

shader/collada/skinned.vert

@@ -0,0 +1,18 @@
+#version 430 core
+
+layout (location = 0) in vec3 Position;
+layout (location = 1) in vec3 Normal;
+layout (location = 2) in vec2 Texture;
+
+layout (location = 0) uniform mat4 Transform;
+
+out vec3 PixelNormal;
+out vec2 PixelTexture;
+
+void main()
+{
+  PixelNormal = Normal;
+  PixelTexture = vec2(Texture.x, 1.0 - Texture.y);
+
+  gl_Position = Transform * vec4(Position, 1);
+}

src/collada/effect.cpp

@@ -12,5 +12,9 @@ namespace collada::effect {
     program_static = compile_from_files("shader/collada/static.vert",
                                         nullptr,
                                         "shader/collada/generic.frag");
+
+    program_skinned = compile_from_files("shader/collada/skinned.vert",
+                                         nullptr,
+                                         "shader/collada/generic.frag");
   }
 }

src/collada/scene.cpp

@@ -177,10 +177,14 @@ namespace collada::scene {
     .elements_count = 2,
   };
 
+  const int vertex_buffer_stride_jw
+    = input_format_gl_size(skin_inputs.elements[0].format)
+    + input_format_gl_size(skin_inputs.elements[1].format);
+
   void state::load_layouts()
   {
     vertex_arrays = New<static_skinned>(descriptor->inputs_list_count);
-    vertex_buffer_strides = New<int>(descriptor->inputs_list_count);
+    vertex_buffer_strides_pnt = New<int>(descriptor->inputs_list_count);
 
     glGenVertexArrays(2 * descriptor->inputs_list_count, (unsigned int *)vertex_arrays);
 
@@ -190,7 +194,7 @@ namespace collada::scene {
                                0, // binding
                                0, // start_offset
                                vertex_arrays[i].static_mesh);
-      vertex_buffer_strides[i] = stride;
+      vertex_buffer_strides_pnt[i] = stride;
 
       // skinned
       load_layout(descriptor->inputs_list[i],
@@ -226,7 +230,6 @@ namespace collada::scene {
     int size;
     void * data = read_file(filename, &size);
     assert(data != NULL);
-    printf("%s %d\n", filename, size);
 
     unsigned int index_buffer;
     glGenBuffers(1, &index_buffer);
@@ -255,7 +258,7 @@ namespace collada::scene {
       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
-      load_dds_texture_2D(image->resource_name);
+      load_dds_texture_2D(image->uri);
     }
 
     glBindTexture(GL_TEXTURE_2D, 0);
@@ -339,20 +342,18 @@ namespace collada::scene {
     types::mesh const& mesh = geometry.mesh;
 
     for (int j = 0; j < instance_materials_count; j++) {
-      //if (j != 1)
-      //continue;
-
       types::instance_material const& instance_material = instance_materials[j];
       types::triangles const& triangles = mesh.triangles[instance_material.element_index];
 
       set_instance_material(instance_material);
 
-      unsigned int vertex_buffer_offset = mesh.vertex_buffer_offset;
-      unsigned int vertex_buffer_stride = vertex_buffer_strides[triangles.inputs_index];
       unsigned int vertex_array = vertex_arrays[triangles.inputs_index].static_mesh;
 
+      unsigned int vertex_buffer_offset_pnt = mesh.vertex_buffer_offset;
+      unsigned int vertex_buffer_stride_pnt = vertex_buffer_strides_pnt[triangles.inputs_index];
+
       glBindVertexArray(vertex_array);
-      glBindVertexBuffer(0, vertex_buffer_pnt, vertex_buffer_offset, vertex_buffer_stride);
+      glBindVertexBuffer(0, vertex_buffer_pnt, vertex_buffer_offset_pnt, vertex_buffer_stride_pnt);
       glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer);
 
       unsigned int index_count = triangles.count * 3;
@@ -382,19 +383,77 @@ namespace collada::scene {
     }
   }
 
+  void state::draw_skin(types::skin const& skin,
+                        types::instance_material const * const instance_materials,
+                        int const instance_materials_count)
+  {
+    glUseProgram(collada::effect::program_skinned);
+
+    types::mesh const& mesh = skin.geometry->mesh;
+
+    for (int j = 0; j < instance_materials_count; j++) {
+      types::instance_material const& instance_material = instance_materials[j];
+      types::triangles const& triangles = mesh.triangles[instance_material.element_index];
+
+      set_instance_material(instance_material);
+
+      unsigned int vertex_array = vertex_arrays[triangles.inputs_index].skinned_mesh;
+
+      unsigned int vertex_buffer_offset_pnt = mesh.vertex_buffer_offset;
+      unsigned int vertex_buffer_stride_pnt = vertex_buffer_strides_pnt[triangles.inputs_index];
+      unsigned int vertex_buffer_offset_jw = skin.vertex_buffer_offset;
+
+      glBindVertexArray(vertex_array);
+      glBindVertexBuffer(0, vertex_buffer_pnt, vertex_buffer_offset_pnt, vertex_buffer_stride_pnt);
+      glBindVertexBuffer(1, vertex_buffer_jw, vertex_buffer_offset_jw, vertex_buffer_stride_jw);
+      glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer);
+
+      unsigned int index_count = triangles.count * 3;
+      unsigned int indices = triangles.index_offset * (sizeof (unsigned int)) + mesh.index_buffer_offset;
+
+      unsigned int instance_count = 1;
+      unsigned int base_vertex = 0;
+      unsigned int base_instance = 0;
+      glDrawElementsInstancedBaseVertexBaseInstance(GL_TRIANGLES,
+                                                    index_count,
+                                                    GL_UNSIGNED_INT,
+                                                    (void *)((ptrdiff_t)indices),
+                                                    instance_count,
+                                                    base_vertex,
+                                                    base_instance);
+    }
+  }
+
+  void state::draw_instance_controllers(types::instance_controller const * const instance_controllers,
+                                        int const instance_controllers_count)
+  {
+    for (int i = 0; i < instance_controllers_count; i++) {
+      types::instance_controller const &instance_controller = instance_controllers[i];
+      types::skin const &skin = instance_controller.controller->skin;
+
+      draw_skin(skin,
+                instance_controller.instance_materials,
+                instance_controller.instance_materials_count);
+    }
+  }
+
   void state::draw_node(types::node const & node)
   {
     draw_instance_geometries(node.instance_geometries, node.instance_geometries_count);
+    draw_instance_controllers(node.instance_controllers, node.instance_controllers_count);
   }
 
   void state::draw()
   {
-    glUseProgram(collada::effect::program_static);
+    unsigned int effects[] = {collada::effect::program_static, collada::effect::program_skinned};
+    for (int i = 0; i < 2; i++) {
+      glUseProgram(effects[i]);
       glUniformMatrix4fv(layout.uniform.transform, 1, false, (float *)&view::state.float_transform);
       glUniform1i(layout.uniform.emission_sampler, 0);
       glUniform1i(layout.uniform.ambient_sampler, 1);
       glUniform1i(layout.uniform.diffuse_sampler, 2);
       glUniform1i(layout.uniform.specular_sampler, 3);
+    }
 
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_GREATER);

src/test.cpp

@@ -24,7 +24,9 @@
 #include "collada/effect.h"
 #include "collada/scene.h"
 #include "collada/types.h"
+
 #include "data/scenes/ship20.h"
+#include "data/scenes/noodle.h"
 
 struct line_location {
   struct {
@@ -302,7 +304,7 @@ void load(const char * source_path)
   //////////////////////////////////////////////////////////////////////
 
   collada::effect::load_effects();
-  scene_state.load_scene(&ship20::descriptor);
+  scene_state.load_scene(&noodle::descriptor);
 }
 
 void update_keyboard(int up, int down, int left, int right,

src/view.cpp

@@ -104,7 +104,9 @@ namespace view {
     state.direction = get_direction(); // on forward/normal/pitch change
 
     // position
-    state.eye = XMVectorSet(-45.5f, 43.25f, 63.0f, 1);
+    //state.eye = XMVectorSet(-45.5f, 43.25f, 63.0f, 1);
-    state.at = state.eye + state.direction * at_distance;
+    //state.at = state.eye + state.direction * at_distance;
+    state.at = XMVectorSet(0, 0, 0, 1);
+    state.eye = XMVectorSet(0, -10, 0, 1);
   }
 }