1 files changed, 122 insertions, 0 deletions
diff --git a/src/VBox/GuestHost/OpenGL/include/state/cr_glsl.h b/src/VBox/GuestHost/OpenGL/include/state/cr_glsl.h
new file mode 100644
index 00000000..32c3a80c
--- /dev/null
+++ b/src/VBox/GuestHost/OpenGL/include/state/cr_glsl.h
@@ -0,0 +1,122 @@
+/* $Id: cr_glsl.h $ */
+
+/** @file
+ * VBox crOpenGL: GLSL related state info
+ */
+
+/*
+ * Copyright (C) 2009-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#ifndef CR_STATE_GLSL_H
+#define CR_STATE_GLSL_H
+
+#include "cr_hash.h"
+#include "state/cr_statetypes.h"
+#include "state/cr_statefuncs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* We can't go the "easy" way of just extracting all the required data when taking snapshots.
+   Shader objects might be modified *after* program linkage and wouldn't affect program until it's relinked.
+   So we have to keep track of shaders statuses right before each program was linked as well as their "current" status.
+*/
+
+/*@todo: check rare case when successfully linked and active program is relinked with failure*/
+
+typedef struct {
+    GLuint      id, hwid;
+    GLenum      type;               /*GL_VERTEX_SHADER or GL_FRAGMENT_SHADER*/
+    GLchar*     source;             /*NULL after context loading unless in program's "active" hash*/
+    GLboolean   compiled, deleted;
+    GLuint      refCount;           /*valid only for shaders in CRGLSLState's hash*/
+} CRGLSLShader;
+
+typedef struct {
+    GLchar* name;
+    GLuint index;
+} CRGLSLAttrib;
+
+/*Note: active state will hold copies of shaders while current state references shaders in the CRGLSLState hashtable*/
+/*@todo: probably don't need a hashtable here*/
+typedef struct {
+    CRHashTable  *attachedShaders;
+    CRGLSLAttrib *pAttribs; /*several names could be bound to the same index*/
+    GLuint        cAttribs;
+} CRGLSLProgramState;
+
+typedef struct{
+    GLchar *name;
+    GLenum  type;
+    GLvoid *data;
+#ifdef IN_GUEST
+    GLint  location;
+#endif
+} CRGLSLUniform;
+
+typedef struct {
+    GLuint              id, hwid;
+    GLboolean           validated, linked, deleted;
+    CRGLSLProgramState  activeState, currentState;
+    CRGLSLUniform      *pUniforms;
+    GLuint              cUniforms;
+#ifdef IN_GUEST
+    CRGLSLAttrib        *pAttribs;
+    GLuint              cAttribs;
+    GLboolean           bUniformsSynced; /*uniforms info is updated since last link program call.*/
+    GLboolean           bAttribsSynced; /*attribs info is updated since last link program call.*/
+#endif
+} CRGLSLProgram;
+
+typedef struct {
+    CRHashTable *shaders;
+    CRHashTable *programs;
+
+    CRGLSLProgram *activeProgram;
+
+    /* Indicates that we have to resend GLSL data to GPU on first glMakeCurrent call with owning context */
+    GLboolean   bResyncNeeded;
+} CRGLSLState;
+
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLInit(CRContext *ctx);
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLDestroy(CRContext *ctx);
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLSwitch(CRContext *from, CRContext *to);
+
+DECLEXPORT(GLuint) STATE_APIENTRY crStateGetShaderHWID(GLuint id);
+DECLEXPORT(GLuint) STATE_APIENTRY crStateGetProgramHWID(GLuint id);
+DECLEXPORT(GLuint) STATE_APIENTRY crStateGLSLProgramHWIDtoID(GLuint hwid);
+DECLEXPORT(GLuint) STATE_APIENTRY crStateGLSLShaderHWIDtoID(GLuint hwid);
+
+DECLEXPORT(GLint) STATE_APIENTRY crStateGetUniformSize(GLenum type);
+DECLEXPORT(GLboolean) STATE_APIENTRY crStateIsIntUniform(GLenum type);
+
+DECLEXPORT(GLuint) STATE_APIENTRY crStateCreateShader(GLuint id, GLenum type);
+DECLEXPORT(GLuint) STATE_APIENTRY crStateCreateProgram(GLuint id);
+DECLEXPORT(GLuint) STATE_APIENTRY crStateDeleteObjectARB( VBoxGLhandleARB obj );
+
+DECLEXPORT(GLboolean) STATE_APIENTRY crStateIsProgramUniformsCached(GLuint program);
+DECLEXPORT(GLboolean) STATE_APIENTRY crStateIsProgramAttribsCached(GLuint program);
+
+#ifdef IN_GUEST
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLProgramCacheUniforms(GLuint program, GLsizei cbData, GLvoid *pData);
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLProgramCacheAttribs(GLuint program, GLsizei cbData, GLvoid *pData);
+#else
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLProgramCacheUniforms(GLuint program, GLsizei maxcbData, GLsizei *cbData, GLvoid *pData);
+DECLEXPORT(void) STATE_APIENTRY crStateGLSLProgramCacheAttribs(GLuint program, GLsizei maxcbData, GLsizei *cbData, GLvoid *pData);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CR_STATE_GLSL_H */