feat: complete first geodesic 3D raytracing

3 files changed, 36 insertions, 4 deletions

diff --git a/src/platform/opengl/opengl_renderer_api.cpp b/src/platform/opengl/opengl_renderer_api.cpp
index 628c0af..bfb79ac 100644
--- a/src/platform/opengl/opengl_renderer_api.cpp
+++ b/src/platform/opengl/opengl_renderer_api.cpp
@@ -83,4 +83,27 @@ namespace Donut
         glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, nullptr);
         glBindTexture(GL_TEXTURE_2D, 0);
     }
+
+    void OpenGLRendererAPI::draw_arrays(uint32_t vertex_count, uint32_t first)
+    {
+        glDrawArrays(GL_TRIANGLES, first, vertex_count);
+    }
+
+    void OpenGLRendererAPI::draw_lines(const Ref<VertexArray>& vertex_array, uint32_t index_count)
+    {
+        uint32_t count = index_count ? index_count : vertex_array->get_index_buffer()->get_count();
+        glDrawElements(GL_LINES, count, GL_UNSIGNED_INT, nullptr);
+    }
+
+    void OpenGLRendererAPI::bind_texture(uint32_t texture_id, uint32_t slot)
+    {
+        glActiveTexture(GL_TEXTURE0 + slot);
+        glBindTexture(GL_TEXTURE_2D, texture_id);
+    }
+
+    void OpenGLRendererAPI::bind_image_texture(uint32_t texture_id, uint32_t slot, bool read_only)
+    {
+        glBindImageTexture(slot, texture_id, 0, GL_FALSE, 0, 
+                          read_only ? GL_READ_ONLY : GL_WRITE_ONLY, GL_RGBA8);
+    }
 };
diff --git a/src/platform/opengl/opengl_renderer_api.h b/src/platform/opengl/opengl_renderer_api.h
index fd446c6..45e6a7b 100644
--- a/src/platform/opengl/opengl_renderer_api.h
+++ b/src/platform/opengl/opengl_renderer_api.h
@@ -26,5 +26,15 @@ namespace Donut
 
         virtual void draw_indexed(const Ref<VertexArray>& vertex_array, 
                                  uint32_t index_count = 0)         override;
+        
+        virtual void draw_arrays(uint32_t vertex_count, 
+                                uint32_t first = 0)               override;
+        virtual void draw_lines(const Ref<VertexArray>& vertex_array, 
+                               uint32_t index_count = 0)           override;
+        virtual void bind_texture(uint32_t texture_id, 
+                                 uint32_t slot = 0)               override;
+        virtual void bind_image_texture(uint32_t texture_id, 
+                                      uint32_t slot = 0, 
+                                      bool read_only = false)      override;
     };
 };
diff --git a/src/platform/opengl/opengl_uniform_buffer.h b/src/platform/opengl/opengl_uniform_buffer.h
index 2a9131f..ae99a56 100644
--- a/src/platform/opengl/opengl_uniform_buffer.h
+++ b/src/platform/opengl/opengl_uniform_buffer.h
@@ -12,11 +12,10 @@ namespace Donut
         virtual ~OpenGLUniformBuffer();
 
         virtual void set_data(const void* data, uint32_t size, uint32_t offset = 0) override;
-        virtual void bind(uint32_t binding) override;
-
+        virtual void bind(uint32_t binding)                                        override;
     private:
         uint32_t m_renderer_id = 0;
-        uint32_t m_size = 0;
-        uint32_t m_binding = 0;
+        uint32_t m_size       = 0;
+        uint32_t m_binding    = 0;
     };
 };