diff options
Diffstat (limited to 'LibOVR/Src/CAPI/GL/CAPI_GL_Util.h')
| -rw-r--r-- | LibOVR/Src/CAPI/GL/CAPI_GL_Util.h | 266 |
1 files changed, 141 insertions, 125 deletions
diff --git a/LibOVR/Src/CAPI/GL/CAPI_GL_Util.h b/LibOVR/Src/CAPI/GL/CAPI_GL_Util.h index a410f17..69d4d08 100644 --- a/LibOVR/Src/CAPI/GL/CAPI_GL_Util.h +++ b/LibOVR/Src/CAPI/GL/CAPI_GL_Util.h @@ -5,15 +5,18 @@ Content : Utility header for OpenGL Created : March 27, 2014 Authors : Andrew Reisse, David Borel -Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved. +Copyright : Copyright 2014 Oculus VR, LLC All Rights reserved. + +Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); +you may not use the Oculus VR Rift SDK except in compliance with the License, +which is provided at the time of installation or download, or which +otherwise accompanies this software in either electronic or hard copy form. -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. You may obtain a copy of the License at -http://www.apache.org/licenses/LICENSE-2.0 +http://www.oculusvr.com/licenses/LICENSE-3.2 -Unless required by applicable law or agreed to in writing, software +Unless required by applicable law or agreed to in writing, the Oculus VR SDK distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and @@ -33,124 +36,30 @@ limitations under the License. #include "../../Kernel/OVR_Log.h" #if defined(OVR_OS_WIN32) +#define WIN32_LEAN_AND_MEAN #include <Windows.h> #endif -#if defined(OVR_OS_MAC) -#include <OpenGL/gl3.h> -#include <OpenGL/gl3ext.h> -#else -#ifndef GL_GLEXT_PROTOTYPES -#define GL_GLEXT_PROTOTYPES -#endif -#include <GL/gl.h> -#include <GL/glext.h> -#if defined(OVR_OS_WIN32) -#include <GL/wglext.h> -#elif defined(OVR_OS_LINUX) -#include <GL/glx.h> -#endif +#if !defined(OVR_DISABLE_GLE) // By default we use the GLE module in order to link to OpenGL functions. However, if an external user +#include "CAPI_GLE.h" // wants to use an alternative mechanism to connect to OpenGL functions, they can #define OVR_DISABLE_GLE. #endif -namespace OVR { namespace CAPI { namespace GL { -// GL extension Hooks for Non-Mac. -#if !defined(OVR_OS_MAC) - -// Let Windows apps build without linking GL. -#if defined(OVR_OS_WIN32) +#if defined(OVR_OS_MAC) + #include <CoreGraphics/CGDirectDisplay.h> + #include <OpenGL/CGLTypes.h> +#endif -typedef void (__stdcall *PFNGLENABLEPROC) (GLenum); -typedef void (__stdcall *PFNGLDISABLEPROC) (GLenum); -typedef void (__stdcall *PFNGLGETFLOATVPROC) (GLenum, GLfloat*); -typedef const GLubyte * (__stdcall *PFNGLGETSTRINGPROC) (GLenum); -typedef void (__stdcall *PFNGLGETINTEGERVPROC) (GLenum, GLint*); -typedef PROC (__stdcall *PFNWGLGETPROCADDRESS) (LPCSTR); -typedef void (__stdcall *PFNGLFLUSHPROC) (); -typedef void (__stdcall *PFNGLFINISHPROC) (); -typedef void (__stdcall *PFNGLDRAWARRAYSPROC) (GLenum mode, GLint first, GLsizei count); -typedef void (__stdcall *PFNGLCLEARPROC) (GLbitfield); -typedef void (__stdcall *PFNGLCOLORMASKPROC) (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha); -typedef void (__stdcall *PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices); -typedef void (__stdcall *PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures); -typedef void (__stdcall *PFNGLDELETETEXTURESPROC) (GLsizei n, GLuint *textures); -typedef void (__stdcall *PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture); -typedef void (__stdcall *PFNGLCLEARCOLORPROC) (GLfloat r, GLfloat g, GLfloat b, GLfloat a); -typedef void (__stdcall *PFNGLCLEARDEPTHPROC) (GLclampd depth); -typedef void (__stdcall *PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param); -typedef void (__stdcall *PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height); - -extern PFNWGLGETPROCADDRESS wglGetProcAddress; -extern PFNWGLGETSWAPINTERVALEXTPROC wglGetSwapIntervalEXT; -extern PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT; - -extern PFNGLENABLEPROC glEnable; -extern PFNGLDISABLEPROC glDisable; -extern PFNGLCOLORMASKPROC glColorMask; -extern PFNGLGETFLOATVPROC glGetFloatv; -extern PFNGLGETSTRINGPROC glGetString; -extern PFNGLGETINTEGERVPROC glGetIntegerv; -extern PFNGLCLEARPROC glClear; -extern PFNGLCLEARCOLORPROC glClearColor; -extern PFNGLCLEARDEPTHPROC glClearDepth; -extern PFNGLVIEWPORTPROC glViewport; -extern PFNGLDRAWARRAYSPROC glDrawArrays; -extern PFNGLDRAWELEMENTSPROC glDrawElements; -extern PFNGLGENTEXTURESPROC glGenTextures; -extern PFNGLDELETETEXTURESPROC glDeleteTextures; -extern PFNGLBINDTEXTUREPROC glBindTexture; -extern PFNGLTEXPARAMETERIPROC glTexParameteri; -extern PFNGLFLUSHPROC glFlush; -extern PFNGLFINISHPROC glFinish; -#elif defined(OVR_OS_LINUX) +namespace OVR +{ + // Get the shared LibOVR GLEContext instance. + class GLEContext; + GLEContext* GetGLEContext(); +} -extern PFNGLXSWAPINTERVALEXTPROC glXSwapIntervalEXT; - -#endif // defined(OVR_OS_WIN32) - -extern PFNGLDELETESHADERPROC glDeleteShader; -extern PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer; -extern PFNGLACTIVETEXTUREPROC glActiveTexture; -extern PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray; -extern PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer; -extern PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray; -extern PFNGLBINDBUFFERPROC glBindBuffer; -extern PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv; -extern PFNGLDELETEBUFFERSPROC glDeleteBuffers; -extern PFNGLBUFFERDATAPROC glBufferData; -extern PFNGLGENBUFFERSPROC glGenBuffers; -extern PFNGLMAPBUFFERPROC glMapBuffer; -extern PFNGLUNMAPBUFFERPROC glUnmapBuffer; -extern PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog; -extern PFNGLGETSHADERIVPROC glGetShaderiv; -extern PFNGLCOMPILESHADERPROC glCompileShader; -extern PFNGLSHADERSOURCEPROC glShaderSource; -extern PFNGLCREATESHADERPROC glCreateShader; -extern PFNGLCREATEPROGRAMPROC glCreateProgram; -extern PFNGLATTACHSHADERPROC glAttachShader; -extern PFNGLDETACHSHADERPROC glDetachShader; -extern PFNGLDELETEPROGRAMPROC glDeleteProgram; -extern PFNGLUNIFORM1IPROC glUniform1i; -extern PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation; -extern PFNGLGETACTIVEUNIFORMPROC glGetActiveUniform; -extern PFNGLUSEPROGRAMPROC glUseProgram; -extern PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog; -extern PFNGLGETPROGRAMIVPROC glGetProgramiv; -extern PFNGLLINKPROGRAMPROC glLinkProgram; -extern PFNGLBINDATTRIBLOCATIONPROC glBindAttribLocation; -extern PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation; -extern PFNGLUNIFORM4FVPROC glUniform4fv; -extern PFNGLUNIFORM3FVPROC glUniform3fv; -extern PFNGLUNIFORM2FVPROC glUniform2fv; -extern PFNGLUNIFORM1FVPROC glUniform1fv; -extern PFNGLGENVERTEXARRAYSPROC glGenVertexArrays; -extern PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays; -extern PFNGLBINDVERTEXARRAYPROC glBindVertexArray; - -extern void InitGLExtensions(); - -#endif // !defined(OVR_OS_MAC) +namespace OVR { namespace CAPI { namespace GL { +void InitGLExtensions(); // Rendering primitive type used to render Model. @@ -223,12 +132,12 @@ struct RenderParams { #if defined(OVR_OS_WIN32) HWND Window; + HDC DC; #elif defined(OVR_OS_LINUX) - Display* Disp; - Window Win; + struct _XDisplay* Disp; #endif - ovrSizei RTSize; + ovrSizei BackBufferSize; int Multisample; }; @@ -314,6 +223,8 @@ protected: String Name; int Location, Size; int Type; // currently number of floats in vector + + Uniform() : Name(), Location(0), Size(0), Type(0){} }; Array<Uniform> UniformInfo; @@ -377,6 +288,14 @@ public: return SetUniform(name, 16, &mt.M[0][0]); } + virtual bool SetUniform3x3f(const char* name, const Matrix4f& m) + { + Matrix4f mt = m.Transposed(); + // float3x3 is actually stored the same way as float4x3, with the last items ignored by the code. + return SetUniform(name, 12, &mt.M[0][0]); + } + + protected: GLint GetGLShader(Shader* s); bool Link(); @@ -456,17 +375,33 @@ public: struct Uniform { const char* Name; - VarType Type; - int Offset, Size; + VarType Type; + int Offset; + int Size; }; - const Uniform* UniformRefl; - size_t UniformReflSize; - ShaderBase(RenderParams* rp, ShaderStage stage) : Shader(stage), pParams(rp), UniformData(0), UniformsSize(0) {} + const Uniform* UniformRefl; + size_t UniformReflSize; + + ShaderBase(RenderParams* rp, ShaderStage stage) : + Shader(stage), + pParams(rp), + UniformData(NULL), + UniformsSize(0), + UniformRefl(NULL), + UniformReflSize(0) + { + } ~ShaderBase() { - if (UniformData) - OVR_FREE(UniformData); + if (UniformData) + { + OVR_FREE(UniformData); + UniformData = NULL; + } + + // Do not need to free UniformRefl + UniformRefl = NULL; } void InitUniforms(const Uniform* refl, size_t reflSize); @@ -489,6 +424,7 @@ public: OVR_UNUSED(size); success = Compile((const char*) s); OVR_ASSERT(success); + OVR_UNUSED(success); InitUniforms(refl, reflSize); } ~ShaderImpl() @@ -532,6 +468,86 @@ private: typedef ShaderImpl<Shader_Vertex, GL_VERTEX_SHADER> VertexShader; typedef ShaderImpl<Shader_Fragment, GL_FRAGMENT_SHADER> FragmentShader; -}}} + + +// Allows us to have independent OpenGL contexts for our systems. +class Context +{ + bool initialized; + bool ownsContext; + int incarnation; +#if defined(OVR_OS_WIN32) + HDC hdc; + HGLRC systemContext; +#elif defined(OVR_OS_LINUX) + Display *x11Display; + GLXDrawable x11Drawable; + GLXContext systemContext; + XVisualInfo x11Visual; +#elif defined(OVR_OS_MAC) + CGLContextObj systemContext; +#endif + +public: + + Context(); + void InitFromCurrent(); + void CreateShared( Context & ctx ); +#if defined(OVR_OS_MAC) + void SetSurface( Context & ctx ); +#endif + void Destroy(); + void Bind(); + void Unbind(); + int GetIncarnation() const { return incarnation; } + +}; + + +// AutoContext +// +// Implements a common sequence of function calls with the Context class. +// See the AutoContext constructor below for what it does. +// +// Example usage: +// void SomeClass::Draw() +// { +// AutoContext autoContext(someClassContext); +// +// <draw calls> +// } + +struct AutoContext +{ + Context savedCurrentContext; + Context& ourContext; + + AutoContext(Context& context) : + savedCurrentContext(), ourContext(context) + { + // We use a member savedCurrentContext which is initialized here, as opposed to having the user pass in a + // pre-existing Context (which the user could declare as a global or C++ member variable). We have to do this + // because if we were to use some pre-existing Context the app might delete its underlying GL context behind our back + // or associate it with another thread, which would cause our bind of it in our dtor to be a bad operation. + savedCurrentContext.InitFromCurrent(); + if(ourContext.GetIncarnation() == 0) // If not yet initialized... + ourContext.CreateShared(savedCurrentContext); + ourContext.Bind(); + #if defined(OVR_OS_MAC) // To consider: merge the following into the Bind function. + ourContext.SetSurface(savedCurrentContext); + #endif + } + + ~AutoContext() + { + savedCurrentContext.Bind(); + } + + OVR_NON_COPYABLE(AutoContext) +}; + + +}}} // namespace OVR::CAPI::GL + #endif // INC_OVR_CAPI_GL_Util_h |