From 226192e264e115244bd2c2a0fd708e1ee705c9a7 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 26 Oct 2020 18:39:25 +0300
Subject: [PATCH] Support cubemap textures as framebuffer attachments

---
 libs/gfx/include/psemek/gfx/framebuffer.hpp |  6 ++++
 libs/gfx/source/framebuffer.cpp             | 36 +++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/libs/gfx/include/psemek/gfx/framebuffer.hpp b/libs/gfx/include/psemek/gfx/framebuffer.hpp
index 3ce0a458..e8e97375 100644
--- a/libs/gfx/include/psemek/gfx/framebuffer.hpp
+++ b/libs/gfx/include/psemek/gfx/framebuffer.hpp
@@ -31,10 +31,16 @@ namespace psemek::gfx
 		void color(texture_2d const & tex, int attachment = 0);
 		void color(texture_3d const & tex, int layer, int attachment = 0);
 		void color(texture_2d_array const & tex, int layer, int attachment = 0);
+		void color(texture_cubemap const & tex, int attachment = 0);
+		void color(texture_cubemap const & tex, int face, int attachment = 0);
 		void color(renderbuffer const & rb, int attachment = 0);
 		void depth(texture_2d const & tex);
+		void depth(texture_cubemap const & tex);
+		void depth(texture_cubemap const & tex, int face);
 		void depth(renderbuffer const & rb);
 		void depth_stencil(texture_2d const & tex);
+		void depth_stencil(texture_cubemap const & tex);
+		void depth_stencil(texture_cubemap const & tex, int face);
 		void depth_stencil(renderbuffer const & rb);
 
 		GLenum status() const;
diff --git a/libs/gfx/source/framebuffer.cpp b/libs/gfx/source/framebuffer.cpp
index 897c7663..3fca7d5e 100644
--- a/libs/gfx/source/framebuffer.cpp
+++ b/libs/gfx/source/framebuffer.cpp
@@ -84,6 +84,18 @@ namespace psemek::gfx
 		gl::FramebufferTextureLayer(gl::DRAW_FRAMEBUFFER, gl::COLOR_ATTACHMENT0 + attachment, tex.id(), 0, layer);
 	}
 
+	void framebuffer::color(texture_cubemap const & tex, int attachment)
+	{
+		bind();
+		gl::FramebufferTexture(gl::DRAW_FRAMEBUFFER, gl::COLOR_ATTACHMENT0 + attachment, tex.id(), 0);
+	}
+
+	void framebuffer::color(texture_cubemap const & tex, int face, int attachment)
+	{
+		bind();
+		gl::FramebufferTexture2D(gl::DRAW_FRAMEBUFFER, gl::COLOR_ATTACHMENT0 + attachment, texture_cubemap::face_to_gl(face), tex.id(), 0);
+	}
+
 	void framebuffer::color(renderbuffer const & rb, int attachment)
 	{
 		bind();
@@ -96,6 +108,18 @@ namespace psemek::gfx
 		gl::FramebufferTexture2D(gl::DRAW_FRAMEBUFFER, gl::DEPTH_ATTACHMENT, gl::TEXTURE_2D, tex.id(), 0);
 	}
 
+	void framebuffer::depth(texture_cubemap const & tex)
+	{
+		bind();
+		gl::FramebufferTexture(gl::DRAW_FRAMEBUFFER, gl::DEPTH_ATTACHMENT, tex.id(), 0);
+	}
+
+	void framebuffer::depth(texture_cubemap const & tex, int face)
+	{
+		bind();
+		gl::FramebufferTexture2D(gl::DRAW_FRAMEBUFFER, gl::DEPTH_ATTACHMENT, texture_cubemap::face_to_gl(face), tex.id(), 0);
+	}
+
 	void framebuffer::depth(renderbuffer const & rb)
 	{
 		bind();
@@ -108,6 +132,18 @@ namespace psemek::gfx
 		gl::FramebufferTexture2D(gl::DRAW_FRAMEBUFFER, gl::DEPTH_STENCIL_ATTACHMENT, gl::TEXTURE_2D, tex.id(), 0);
 	}
 
+	void framebuffer::depth_stencil(texture_cubemap const & tex)
+	{
+		bind();
+		gl::FramebufferTexture(gl::DRAW_FRAMEBUFFER, gl::DEPTH_STENCIL_ATTACHMENT, tex.id(), 0);
+	}
+
+	void framebuffer::depth_stencil(texture_cubemap const & tex, int face)
+	{
+		bind();
+		gl::FramebufferTexture2D(gl::DRAW_FRAMEBUFFER, gl::DEPTH_STENCIL_ATTACHMENT, texture_cubemap::face_to_gl(face), tex.id(), 0);
+	}
+
 	void framebuffer::depth_stencil(renderbuffer const & rb)
 	{
 		bind();