From eb257d929565bb5453bab57d0c79f5ead0a8a73d Mon Sep 17 00:00:00 2001
From: Gregory Hainaut <gregory.hainaut@gmail.com>
Date: Sat, 25 Apr 2015 11:41:46 +0200
Subject: [PATCH] gsdx-ogl: add dsa function place holder

---
 plugins/GSdx/GLLoader.cpp | 65 +++++++++++++++++++++++++++++++++++++++
 plugins/GSdx/GLLoader.h   |  1 +
 plugins/GSdx/GSWnd.cpp    |  1 +
 3 files changed, 67 insertions(+)

diff --git a/plugins/GSdx/GLLoader.cpp b/plugins/GSdx/GLLoader.cpp
index 49b85e299..c5115f12d 100644
--- a/plugins/GSdx/GLLoader.cpp
+++ b/plugins/GSdx/GLLoader.cpp
@@ -137,6 +137,7 @@ PFNGLNAMEDBUFFERSUBDATAPROC            gl_NamedBufferSubData                = NU
 PFNGLMAPNAMEDBUFFERPROC                gl_MapNamedBuffer                    = NULL;
 PFNGLMAPNAMEDBUFFERRANGEPROC           gl_MapNamedBufferRange               = NULL;
 PFNGLUNMAPNAMEDBUFFERPROC              gl_UnmapNamedBuffer                  = NULL;
+PFNGLFLUSHMAPPEDNAMEDBUFFERRANGEPROC   gl_FlushMappedNamedBufferRange       = NULL;
 
 PFNGLCREATESAMPLERSPROC                gl_CreateSamplers                    = NULL;
 PFNGLCREATEPROGRAMPIPELINESPROC        gl_CreateProgramPipelines            = NULL;
@@ -147,6 +148,7 @@ PFNGLTEXTUREBARRIERPROC                gl_TextureBarrier                    = NU
 #endif
 
 namespace Emulate_DSA {
+	// Texture entry point
 	void APIENTRY BindTextureUnit(GLuint unit, GLuint texture) {
 		gl_ActiveTexture(GL_TEXTURE0 + unit);
 		glBindTexture(GL_TEXTURE_2D, texture);
@@ -176,6 +178,69 @@ namespace Emulate_DSA {
 		glGetTexImage(GL_TEXTURE_2D, level, format, type, pixels);
 	}
 
+	// Framebuffer entry point
+	void APIENTRY CreateFramebuffers(GLsizei n, GLuint *framebuffers) {
+	}
+
+	void APIENTRY ClearNamedFramebufferfv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLfloat *value) {
+	}
+
+	void APIENTRY ClearNamedFramebufferiv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLint *value) {
+	}
+
+	void APIENTRY ClearNamedFramebufferuiv(GLuint framebuffer, GLenum buffer, GLint drawbuffer, const GLuint *value) {
+	}
+
+	void APIENTRY NamedFramebufferTexture(GLuint framebuffer, GLenum attachment, GLuint texture, GLint level) {
+	}
+
+	void APIENTRY NamedFramebufferDrawBuffers(GLuint framebuffer, GLsizei n, const GLenum *bufs) {
+	}
+
+	void APIENTRY NamedFramebufferReadBuffer(GLuint framebuffer, GLenum src) {
+	}
+
+	GLenum APIENTRY CheckNamedFramebufferStatus(GLuint framebuffer, GLenum target) {
+		return 0;
+	}
+
+	// Buffer entry point
+	void APIENTRY CreateBuffers(GLsizei n, GLuint *buffers) {
+	}
+
+	void APIENTRY NamedBufferStorage(GLuint buffer, GLsizei size, const void *data, GLbitfield flags) {
+	}
+
+	void APIENTRY NamedBufferData(GLuint buffer, GLsizei size, const void *data, GLenum usage) {
+	}
+
+	void APIENTRY NamedBufferSubData(GLuint buffer, GLintptr offset, GLsizei size, const void *data) {
+	}
+
+	void *APIENTRY MapNamedBuffer(GLuint buffer, GLenum access) {
+		return NULL;
+	}
+
+	void *APIENTRY MapNamedBufferRange(GLuint buffer, GLintptr offset, GLsizei length, GLbitfield access) {
+		return NULL;
+	}
+
+	GLboolean APIENTRY UnmapNamedBuffer(GLuint buffer) {
+		return false;
+	}
+
+	void APIENTRY FlushMappedNamedBufferRange(GLuint buffer, GLintptr offset, GLsizei length) {
+	}
+
+	// Misc entry point
+	// (only purpose is to have a consistent API otherwise it is useless)
+	void APIENTRY CreateProgramPipelines(GLsizei n, GLuint *pipelines) {
+	}
+
+	void APIENTRY CreateSamplers(GLsizei n, GLuint *samplers) {
+	}
+
+	// Replace function pointer to emulate DSA behavior
 	void Init() {
 		fprintf(stderr, "DSA is not supported. Replace GL function pointer to emulate it\n");
 		gl_BindTextureUnit = BindTextureUnit;
diff --git a/plugins/GSdx/GLLoader.h b/plugins/GSdx/GLLoader.h
index 25f329552..53e5656f5 100644
--- a/plugins/GSdx/GLLoader.h
+++ b/plugins/GSdx/GLLoader.h
@@ -325,6 +325,7 @@ extern PFNGLNAMEDBUFFERSUBDATAPROC              gl_NamedBufferSubData;
 extern PFNGLMAPNAMEDBUFFERPROC                  gl_MapNamedBuffer;
 extern PFNGLMAPNAMEDBUFFERRANGEPROC             gl_MapNamedBufferRange;
 extern PFNGLUNMAPNAMEDBUFFERPROC                gl_UnmapNamedBuffer;
+extern PFNGLFLUSHMAPPEDNAMEDBUFFERRANGEPROC     gl_FlushMappedNamedBufferRange;
 
 extern PFNGLCREATESAMPLERSPROC                  gl_CreateSamplers;
 extern PFNGLCREATEPROGRAMPIPELINESPROC          gl_CreateProgramPipelines;
diff --git a/plugins/GSdx/GSWnd.cpp b/plugins/GSdx/GSWnd.cpp
index fc6bc8a5c..747e85700 100644
--- a/plugins/GSdx/GSWnd.cpp
+++ b/plugins/GSdx/GSWnd.cpp
@@ -140,6 +140,7 @@ void GSWndGL::PopulateGlFunction()
 	*(void**)&(gl_MapNamedBuffer) = GetProcAddress("glMapNamedBuffer", true);
 	*(void**)&(gl_MapNamedBufferRange) = GetProcAddress("glMapNamedBufferRange", true);
 	*(void**)&(gl_UnmapNamedBuffer) = GetProcAddress("glUnmapNamedBuffer", true);
+	*(void**)&(gl_FlushMappedNamedBufferRange) = GetProcAddress("glFlushMappedNamedBufferRange", true);
 
 	*(void**)&(gl_CreateSamplers) = GetProcAddress("glCreateSamplers", true);
 	*(void**)&(gl_CreateProgramPipelines) = GetProcAddress("glCreateProgramPipelines", true);