From 4172869e54093eee6e1595ebe0fa55c9fe98aef7 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Fri, 15 Aug 2025 03:18:29 +0200
Subject: [help]: Complete first geodesic 3d raytracing

---
 src/Platform/OpenGL/OpenGLRendererAPI.cpp | 23 +++++++++++++++++++++++
 src/Platform/OpenGL/OpenGLRendererAPI.h   | 10 ++++++++++
 src/Platform/OpenGL/OpenGLUniformBuffer.h |  7 +++----
 3 files changed, 36 insertions(+), 4 deletions(-)

(limited to 'src/Platform/OpenGL')

diff --git a/src/Platform/OpenGL/OpenGLRendererAPI.cpp b/src/Platform/OpenGL/OpenGLRendererAPI.cpp
index d181203..cd54f82 100644
--- a/src/Platform/OpenGL/OpenGLRendererAPI.cpp
+++ b/src/Platform/OpenGL/OpenGLRendererAPI.cpp
@@ -83,4 +83,27 @@ namespace Donut
         glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, nullptr);
         glBindTexture(GL_TEXTURE_2D, 0);
     }
+
+    void OpenGLRendererAPI::DrawArrays(uint32_t vertexCount, uint32_t first)
+    {
+        glDrawArrays(GL_TRIANGLES, first, vertexCount);
+    }
+
+    void OpenGLRendererAPI::DrawLines(const Ref<VertexArray>& vertexArray, uint32_t indexCount)
+    {
+        uint32_t count = indexCount ? indexCount : vertexArray->GetIndexBuffer()->GetCount();
+        glDrawElements(GL_LINES, count, GL_UNSIGNED_INT, nullptr);
+    }
+
+    void OpenGLRendererAPI::BindTexture(uint32_t textureID, uint32_t slot)
+    {
+        glActiveTexture(GL_TEXTURE0 + slot);
+        glBindTexture(GL_TEXTURE_2D, textureID);
+    }
+
+    void OpenGLRendererAPI::BindImageTexture(uint32_t textureID, uint32_t slot, bool readOnly)
+    {
+        glBindImageTexture(slot, textureID, 0, GL_FALSE, 0, 
+                          readOnly ? GL_READ_ONLY : GL_WRITE_ONLY, GL_RGBA8);
+    }
 };
diff --git a/src/Platform/OpenGL/OpenGLRendererAPI.h b/src/Platform/OpenGL/OpenGLRendererAPI.h
index f6b9fb4..0576db8 100644
--- a/src/Platform/OpenGL/OpenGLRendererAPI.h
+++ b/src/Platform/OpenGL/OpenGLRendererAPI.h
@@ -26,5 +26,15 @@ namespace Donut
 
         virtual void DrawIndexed(const Ref<VertexArray>& vertexArray, 
                                  uint32_t indexCount = 0)         override;
+        
+        virtual void DrawArrays(uint32_t vertexCount, 
+                                uint32_t first = 0)               override;
+        virtual void DrawLines(const Ref<VertexArray>& vertexArray, 
+                               uint32_t indexCount = 0)           override;
+        virtual void BindTexture(uint32_t textureID, 
+                                 uint32_t slot = 0)               override;
+        virtual void BindImageTexture(uint32_t textureID, 
+                                      uint32_t slot = 0, 
+                                      bool readOnly = false)      override;
     };
 };
diff --git a/src/Platform/OpenGL/OpenGLUniformBuffer.h b/src/Platform/OpenGL/OpenGLUniformBuffer.h
index 6e7fac1..fd96f37 100644
--- a/src/Platform/OpenGL/OpenGLUniformBuffer.h
+++ b/src/Platform/OpenGL/OpenGLUniformBuffer.h
@@ -12,11 +12,10 @@ namespace Donut
         virtual ~OpenGLUniformBuffer();
 
         virtual void SetData(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_RendererID = 0;
-        uint32_t m_Size = 0;
-        uint32_t m_Binding = 0;
+        uint32_t m_Size       = 0;
+        uint32_t m_Binding    = 0;
     };
 };
-- 
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