From 16d5f477ff58d3f3fe2c659684735620c2725302 Mon Sep 17 00:00:00 2001
From: Gregory Hainaut <gregory.hainaut@gmail.com>
Date: Thu, 7 Feb 2019 12:17:15 +0100
Subject: [PATCH] gsdx ogl: implement CommitPages

---
 plugins/GSdx/Renderers/OpenGL/GSTextureOGL.cpp | 18 ++++++++++++++++++
 plugins/GSdx/Renderers/OpenGL/GSTextureOGL.h   |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.cpp b/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.cpp
index a0835c8791..d61765724c 100644
--- a/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.cpp
+++ b/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.cpp
@@ -515,6 +515,24 @@ void GSTextureOGL::GenerateMipmap()
 	}
 }
 
+void GSTextureOGL::CommitPages(const GSVector2i& region, bool commit)
+{
+	GLState::available_vram += m_mem_usage;
+
+	if (commit) {
+		GL_INS("CommitPages %dx%d of %u", region.x, region.y, m_texture_id);
+		m_committed_size = region;
+	} else {
+		GL_INS("CommitPages release of %u", m_texture_id);
+		m_committed_size = GSVector2i(0, 0);
+	}
+
+	m_mem_usage = (m_committed_size.x * m_committed_size.y) << m_int_shift;
+	GLState::available_vram -= m_mem_usage;
+
+	glTexturePageCommitmentEXT(m_texture_id, GL_TEX_LEVEL_0, 0, 0, 0, m_committed_size.x, m_committed_size.y, 1, commit);
+}
+
 bool GSTextureOGL::Save(const std::string& fn)
 {
 	// Collect the texture data
diff --git a/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.h b/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.h
index 1f712899e2..69a38a5b21 100644
--- a/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.h
+++ b/plugins/GSdx/Renderers/OpenGL/GSTextureOGL.h
@@ -84,5 +84,7 @@ class GSTextureOGL final : public GSTexture
 		void Clear(const void* data);
 		void Clear(const void* data, const GSVector4i& area);
 
+		void CommitPages(const GSVector2i& region, bool commit) final;
+
 		uint32 GetMemUsage();
 };