From f2a81237a852891618330f7d89dcd02e90223b87 Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Tue, 16 Apr 2024 16:22:14 -0400
Subject: [PATCH] texture getters

---
 CMakeLists.txt                |  2 +-
 include/blt/gfx/framebuffer.h |  8 ++++++--
 include/blt/gfx/texture.h     | 10 ++++++++++
 src/blt/gfx/framebuffer.cpp   | 21 ++++++++++++++++++++-
 4 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9aac8ba..472b3d1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.25)
 
-set(BLT_GRAPHICS_VERSION 0.9.14)
+set(BLT_GRAPHICS_VERSION 0.9.15)
 set(BLT_GRAPHICS_TEST_VERSION 0.0.1)
 
 project(BLT_WITH_GRAPHICS VERSION ${BLT_GRAPHICS_VERSION})
diff --git a/include/blt/gfx/framebuffer.h b/include/blt/gfx/framebuffer.h
index e60f09a..19e1781 100644
--- a/include/blt/gfx/framebuffer.h
+++ b/include/blt/gfx/framebuffer.h
@@ -41,8 +41,9 @@ namespace blt::gfx
         private:
             GLuint rboID;
             GLuint storage_type;
+            blt::i32 width_, height_;
         public:
-            rbo_t(): rboID(0), storage_type(0)
+            rbo_t(): rboID(0), storage_type(0), width_(-1), height_(-1)
             {}
             
             void create();
@@ -51,7 +52,7 @@ namespace blt::gfx
             
             void setStorage(GLuint storage_type, blt::i32 width, blt::i32 height);
             
-            void updateStorage(blt::i32 width, blt::i32 height) const;
+            void updateStorage(blt::i32 width, blt::i32 height);
             
             static void unbind();
             
@@ -96,6 +97,9 @@ namespace blt::gfx
             // this function takes ownership of the render buffer
             void attachRenderBuffer(rbo_t rbo, attachment_t attachment);
             
+            void blitTexture(const fbo_t& draw, blt::i32 x1_offset = 0, blt::i32 y1_offset = 0, blt::i32 x2_offset = 0, blt::i32 y2_offset = 0);
+            void blitDepth(fbo_t draw, blt::i32 x1_offset = 0, blt::i32 y1_offset = 0, blt::i32 x2_offset = 0, blt::i32 y2_offset = 0);
+            
             static bool validate();
             
             static void unbind();
diff --git a/include/blt/gfx/texture.h b/include/blt/gfx/texture.h
index 6020451..29d2152 100644
--- a/include/blt/gfx/texture.h
+++ b/include/blt/gfx/texture.h
@@ -166,6 +166,16 @@ namespace blt::gfx
             virtual void updateSize(blt::i32, blt::i32)
             {}
             
+            [[nodiscard]] int getHeight() const
+            {
+                return m_height;
+            }
+            
+            [[nodiscard]] int getWidth() const
+            {
+                return m_width;
+            }
+            
             virtual ~texture_gl()
             {
                 glDeleteTextures(1, &textureID);
diff --git a/src/blt/gfx/framebuffer.cpp b/src/blt/gfx/framebuffer.cpp
index 65caba8..079c177 100644
--- a/src/blt/gfx/framebuffer.cpp
+++ b/src/blt/gfx/framebuffer.cpp
@@ -38,8 +38,10 @@ namespace blt::gfx
         glDeleteRenderbuffers(1, &rboID);
     }
     
-    void rbo_t::updateStorage(blt::i32 width, blt::i32 height) const
+    void rbo_t::updateStorage(blt::i32 width, blt::i32 height)
     {
+        width_ = width;
+        height_ = height;
         glRenderbufferStorage(GL_RENDERBUFFER, storage_type, width, height);
     }
     
@@ -114,6 +116,23 @@ namespace blt::gfx
             texture->updateSize(width, height);
     }
     
+    void fbo_t::blitTexture(const fbo_t& draw, blt::i32 x1_offset, blt::i32 y1_offset, blt::i32 x2_offset, blt::i32 y2_offset)
+    {
+        if (texture_buffers.empty())
+        {
+            BLT_ERROR("Trying to blit texture with no texture attached!");
+            return;
+        }
+        glBindFramebuffer(GL_READ_FRAMEBUFFER, fboID);
+        glBindFramebuffer(GL_DRAW_FRAMEBUFFER, draw.fboID);
+        //glBlitFramebuffer(x1_offset, y1_offset, texture_buffers[0].)
+    }
+    
+    void fbo_t::blitDepth(fbo_t draw, blt::i32 x1_offset, blt::i32 y1_offset, blt::i32 x2_offset, blt::i32 y2_offset)
+    {
+    
+    }
+    
     fbo_t fbo_t::make_render_texture(blt::i32 width, blt::i32 height)
     {
         fbo_t fbo;