Add a new OpenGL pyramid sample

This sample shows the use of modern OpenGL (3.2). Closes #16910.
2016-02-23 00:52:28 +01:00
parent bdc95f5766
commit d6fb44e158
27 changed files with 6418 additions and 68 deletions
--- a/samples/opengl/pyramid/oglpfuncs.cpp
+++ b/samples/opengl/pyramid/oglpfuncs.cpp
@@ -0,0 +1,138 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        oglpfuncs.cpp
+// Purpose:     Pointers to OpenGL functions
+// Author:      Manuel Martin
+// Created:     2015/11/16
+// Copyright:   (c) 2015 Manuel Martin
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "oglpfuncs.h"
+
+// Apple defines everything on his own
+#ifndef __APPLE__
+
+#if defined(_WIN32) || defined(__WIN32__)
+    #ifndef WIN32_LEAN_AND_MEAN
+        // Reduce a bit header VC++ compilation time
+        #define WIN32_LEAN_AND_MEAN 1
+        #define LE_ME_ISDEF
+    #endif
+    #include <windows.h> //For wglGetProcAddress
+    #ifdef LE_ME_ISDEF
+        #undef WIN32_LEAN_AND_MEAN
+        #undef LE_ME_ISDEF
+    #endif
+    // Our macro
+    #define MyGetProcAddress(name) wglGetProcAddress((LPCSTR)name)
+#else // Linux
+    // GLX_ARB_get_proc_address
+    // glXGetProcAddressARB is statically exported by all libGL implementations,
+    // while glXGetProcAddress may be not available.
+    #ifdef __cplusplus
+        extern "C" {
+    #endif
+    extern void (*glXGetProcAddressARB(const GLubyte *procName))();
+    #ifdef __cplusplus
+        }
+    #endif
+    #define MyGetProcAddress(name) (*glXGetProcAddressARB)((const GLubyte*)name)
+#endif
+
+// The function to get the pointers
+void* MyGetGLFuncAddress(const char* fname)
+{
+    void* pret = (void*) MyGetProcAddress(fname);
+
+    // Some drivers return -apart from 0-, -1, 1, 2 or 3
+    if ( pret == (void*)-1 || pret == (void*)1 || pret == (void*)2 || pret == (void*)3 )
+        pret = (void*)0;
+
+    return pret;
+}
+
+// Declare and initialize pointers
+PFNGLACTIVETEXTUREPROC my_glActiveTexture = NULL;
+PFNGLATTACHSHADERPROC my_glAttachShader = NULL;
+PFNGLBINDATTRIBLOCATIONPROC my_glBindAttribLocation = NULL;
+PFNGLBINDBUFFERPROC my_glBindBuffer = NULL;
+PFNGLBINDVERTEXARRAYPROC my_glBindVertexArray = NULL;
+PFNGLBUFFERDATAPROC my_glBufferData = NULL;
+PFNGLBUFFERSUBDATAPROC my_glBufferSubData = NULL;
+PFNGLCOMPILESHADERPROC my_glCompileShader = NULL;
+PFNGLCREATEPROGRAMPROC my_glCreateProgram = NULL;
+PFNGLCREATESHADERPROC my_glCreateShader = NULL;
+PFNGLDELETEBUFFERSPROC my_glDeleteBuffers = NULL;
+PFNGLDELETEPROGRAMPROC my_glDeleteProgram = NULL;
+PFNGLDELETESHADERPROC my_glDeleteShader = NULL;
+PFNGLDELETEVERTEXARRAYSPROC my_glDeleteVertexArrays = NULL;
+PFNGLDETACHSHADERPROC my_glDetachShader = NULL;
+PFNGLDISABLEVERTEXATTRIBARRAYPROC my_glDisableVertexAttribArray = NULL;
+PFNGLENABLEVERTEXATTRIBARRAYPROC my_glEnableVertexAttribArray = NULL;
+PFNGLGENBUFFERSPROC my_glGenBuffers = NULL;
+PFNGLGENVERTEXARRAYSPROC my_glGenVertexArrays = NULL;
+PFNGLGETPROGRAMINFOLOGPROC my_glGetProgramInfoLog = NULL;
+PFNGLGETPROGRAMIVPROC my_glGetProgramiv = NULL;
+PFNGLGETSHADERINFOLOGPROC my_glGetShaderInfoLog = NULL;
+PFNGLGETSHADERIVPROC my_glGetShaderiv = NULL;
+PFNGLGETUNIFORMLOCATIONPROC my_glGetUniformLocation = NULL;
+PFNGLLINKPROGRAMPROC my_glLinkProgram = NULL;
+PFNGLPROVOKINGVERTEXPROC my_glProvokingVertex = NULL;
+PFNGLSHADERSOURCEPROC my_glShaderSource = NULL;
+PFNGLUNIFORM1IPROC my_glUniform1i = NULL;
+PFNGLUNIFORM3FVPROC my_glUniform3fv = NULL;
+PFNGLUNIFORM4FVPROC my_glUniform4fv = NULL;
+PFNGLUNIFORMMATRIX4FVPROC my_glUniformMatrix4fv = NULL;
+PFNGLUSEPROGRAMPROC my_glUseProgram = NULL;
+PFNGLVERTEXATTRIBPOINTERPROC my_glVertexAttribPointer = NULL;
+
+#endif // __APPLE__
+
+// Retrieve the pointers
+#define GETANDTEST(type, name)                       \
+    my_ ## name = (type) MyGetGLFuncAddress(#name);  \
+    if (name == 0)                                   \
+        return false;
+
+bool MyInitGLPointers()
+{
+#ifdef __APPLE__
+    return true;
+#else
+    GETANDTEST(PFNGLACTIVETEXTUREPROC, glActiveTexture)
+    GETANDTEST(PFNGLATTACHSHADERPROC, glAttachShader)
+    GETANDTEST(PFNGLBINDATTRIBLOCATIONPROC, glBindAttribLocation)
+    GETANDTEST(PFNGLBINDBUFFERPROC, glBindBuffer)
+    GETANDTEST(PFNGLBINDVERTEXARRAYPROC, glBindVertexArray)
+    GETANDTEST(PFNGLBUFFERDATAPROC, glBufferData)
+    GETANDTEST(PFNGLBUFFERSUBDATAPROC, glBufferSubData)
+    GETANDTEST(PFNGLCOMPILESHADERPROC, glCompileShader)
+    GETANDTEST(PFNGLCREATEPROGRAMPROC, glCreateProgram)
+    GETANDTEST(PFNGLCREATESHADERPROC, glCreateShader)
+    GETANDTEST(PFNGLDELETEBUFFERSPROC, glDeleteBuffers)
+    GETANDTEST(PFNGLDELETEPROGRAMPROC, glDeleteProgram)
+    GETANDTEST(PFNGLDELETESHADERPROC, glDeleteShader)
+    GETANDTEST(PFNGLDELETEVERTEXARRAYSPROC, glDeleteVertexArrays)
+    GETANDTEST(PFNGLDETACHSHADERPROC, glDetachShader)
+    GETANDTEST(PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray)
+    GETANDTEST(PFNGLENABLEVERTEXATTRIBARRAYPROC, glEnableVertexAttribArray)
+    GETANDTEST(PFNGLGENBUFFERSPROC, glGenBuffers)
+    GETANDTEST(PFNGLGENVERTEXARRAYSPROC, glGenVertexArrays)
+    GETANDTEST(PFNGLGETPROGRAMINFOLOGPROC, glGetProgramInfoLog)
+    GETANDTEST(PFNGLGETPROGRAMIVPROC, glGetProgramiv)
+    GETANDTEST(PFNGLGETSHADERINFOLOGPROC, glGetShaderInfoLog)
+    GETANDTEST(PFNGLGETSHADERIVPROC, glGetShaderiv)
+    GETANDTEST(PFNGLGETUNIFORMLOCATIONPROC, glGetUniformLocation)
+    GETANDTEST(PFNGLLINKPROGRAMPROC, glLinkProgram)
+    GETANDTEST(PFNGLPROVOKINGVERTEXPROC, glProvokingVertex)
+    GETANDTEST(PFNGLSHADERSOURCEPROC, glShaderSource)
+    GETANDTEST(PFNGLUNIFORM1IPROC, glUniform1i)
+    GETANDTEST(PFNGLUNIFORM3FVPROC, glUniform3fv)
+    GETANDTEST(PFNGLUNIFORM4FVPROC, glUniform4fv)
+    GETANDTEST(PFNGLUNIFORMMATRIX4FVPROC, glUniformMatrix4fv)
+    GETANDTEST(PFNGLUSEPROGRAMPROC, glUseProgram)
+    GETANDTEST(PFNGLVERTEXATTRIBPOINTERPROC, glVertexAttribPointer)
+
+    return true;
+#endif
+}