refactoring
This commit is contained in:
FunkyFr3sh
parent
95afd87656
commit
baaa87b18f
62 changed files with 7231 additions and 6636 deletions
364
src/opengl_utils.c
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364
src/opengl_utils.c
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#include <windows.h>
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#include <stdio.h>
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#include "opengl_utils.h"
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PFNWGLCREATECONTEXTPROC xwglCreateContext;
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PFNWGLDELETECONTEXTPROC xwglDeleteContext;
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PFNWGLGETPROCADDRESSPROC xwglGetProcAddress;
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PFNWGLMAKECURRENTPROC xwglMakeCurrent;
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PFNGLVIEWPORTPROC glViewport;
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PFNGLBINDTEXTUREPROC glBindTexture;
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PFNGLGENTEXTURESPROC glGenTextures;
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PFNGLTEXPARAMETERIPROC glTexParameteri;
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PFNGLDELETETEXTURESPROC glDeleteTextures;
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PFNGLTEXIMAGE2DPROC glTexImage2D;
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PFNGLDRAWELEMENTSPROC glDrawElements;
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PFNGLTEXSUBIMAGE2DPROC glTexSubImage2D;
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PFNGLGETERRORPROC glGetError;
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PFNGLGETSTRINGPROC glGetString;
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PFNGLGETTEXIMAGEPROC glGetTexImage;
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PFNGLPIXELSTOREIPROC glPixelStorei;
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PFNGLENABLEPROC glEnable;
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PFNGLCLEARPROC glClear;
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PFNGLBEGINPROC glBegin;
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PFNGLENDPROC glEnd;
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PFNGLTEXCOORD2FPROC glTexCoord2f;
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PFNGLVERTEX2FPROC glVertex2f;
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PFNGLCREATEPROGRAMPROC glCreateProgram;
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PFNGLDELETEPROGRAMPROC glDeleteProgram;
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PFNGLUSEPROGRAMPROC glUseProgram;
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PFNGLATTACHSHADERPROC glAttachShader;
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PFNGLDETACHSHADERPROC glDetachShader;
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PFNGLLINKPROGRAMPROC glLinkProgram;
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PFNGLGETPROGRAMIVPROC glGetProgramiv;
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PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
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PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
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PFNGLUNIFORM1IPROC glUniform1i;
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PFNGLUNIFORM1IVPROC glUniform1iv;
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PFNGLUNIFORM2IVPROC glUniform2iv;
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PFNGLUNIFORM3IVPROC glUniform3iv;
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PFNGLUNIFORM4IVPROC glUniform4iv;
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PFNGLUNIFORM1FPROC glUniform1f;
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PFNGLUNIFORM1FVPROC glUniform1fv;
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PFNGLUNIFORM2FVPROC glUniform2fv;
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PFNGLUNIFORM3FVPROC glUniform3fv;
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PFNGLUNIFORM4FVPROC glUniform4fv;
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PFNGLUNIFORM4FPROC glUniform4f;
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PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;
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PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
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PFNGLVERTEXATTRIB1FPROC glVertexAttrib1f;
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PFNGLVERTEXATTRIB1FVPROC glVertexAttrib1fv;
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PFNGLVERTEXATTRIB2FVPROC glVertexAttrib2fv;
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PFNGLVERTEXATTRIB3FVPROC glVertexAttrib3fv;
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PFNGLVERTEXATTRIB4FVPROC glVertexAttrib4fv;
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PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
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PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
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PFNGLBINDATTRIBLOCATIONPROC glBindAttribLocation;
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PFNGLGETACTIVEUNIFORMPROC glGetActiveUniform;
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PFNGLCREATESHADERPROC glCreateShader;
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PFNGLDELETESHADERPROC glDeleteShader;
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PFNGLSHADERSOURCEPROC glShaderSource;
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PFNGLCOMPILESHADERPROC glCompileShader;
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PFNGLGETSHADERIVPROC glGetShaderiv;
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PFNGLGENBUFFERSPROC glGenBuffers;
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PFNGLBINDBUFFERPROC glBindBuffer;
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PFNGLBUFFERDATAPROC glBufferData;
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PFNGLMAPBUFFERPROC glMapBuffer;
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PFNGLUNMAPBUFFERPROC glUnmapBuffer;
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PFNGLBUFFERSUBDATAPROC glBufferSubData;
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PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
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PFNGLDELETEBUFFERSPROC glDeleteBuffers;
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PFNGLGENVERTEXARRAYSPROC glGenVertexArrays;
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PFNGLBINDVERTEXARRAYPROC glBindVertexArray;
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PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays;
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PFNGLACTIVETEXTUREPROC glActiveTexture;
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PFNGLGENFRAMEBUFFERSPROC glGenFramebuffers;
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PFNGLBINDFRAMEBUFFERPROC glBindFramebuffer;
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PFNGLFRAMEBUFFERTEXTURE2DPROC glFramebufferTexture2D;
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PFNGLDRAWBUFFERSPROC glDrawBuffers;
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PFNGLCHECKFRAMEBUFFERSTATUSPROC glCheckFramebufferStatus;
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PFNGLDELETEFRAMEBUFFERSPROC glDeleteFramebuffers;
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PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT;
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PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB;
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PFNGLTEXBUFFERPROC glTexBuffer;
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HMODULE g_oglu_hmodule;
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BOOL g_oglu_got_version2;
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BOOL g_oglu_got_version3;
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char g_oglu_version[128];
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BOOL oglu_load_dll()
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{
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if (!g_oglu_hmodule)
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g_oglu_hmodule = LoadLibrary("opengl32.dll");
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if (g_oglu_hmodule)
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{
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xwglCreateContext = (PFNWGLCREATECONTEXTPROC)GetProcAddress(g_oglu_hmodule, "wglCreateContext");
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xwglDeleteContext = (PFNWGLDELETECONTEXTPROC)GetProcAddress(g_oglu_hmodule, "wglDeleteContext");
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xwglGetProcAddress = (PFNWGLGETPROCADDRESSPROC)GetProcAddress(g_oglu_hmodule, "wglGetProcAddress");
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xwglMakeCurrent = (PFNWGLMAKECURRENTPROC)GetProcAddress(g_oglu_hmodule, "wglMakeCurrent");
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glViewport = (PFNGLVIEWPORTPROC)GetProcAddress(g_oglu_hmodule, "glViewport");
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glBindTexture = (PFNGLBINDTEXTUREPROC)GetProcAddress(g_oglu_hmodule, "glBindTexture");
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glGenTextures = (PFNGLGENTEXTURESPROC)GetProcAddress(g_oglu_hmodule, "glGenTextures");
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glTexParameteri = (PFNGLTEXPARAMETERIPROC)GetProcAddress(g_oglu_hmodule, "glTexParameteri");
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glDeleteTextures = (PFNGLDELETETEXTURESPROC)GetProcAddress(g_oglu_hmodule, "glDeleteTextures");
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glTexImage2D = (PFNGLTEXIMAGE2DPROC)GetProcAddress(g_oglu_hmodule, "glTexImage2D");
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glDrawElements = (PFNGLDRAWELEMENTSPROC)GetProcAddress(g_oglu_hmodule, "glDrawElements");
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glTexSubImage2D = (PFNGLTEXSUBIMAGE2DPROC)GetProcAddress(g_oglu_hmodule, "glTexSubImage2D");
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glGetError = (PFNGLGETERRORPROC)GetProcAddress(g_oglu_hmodule, "glGetError");
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glGetString = (PFNGLGETSTRINGPROC)GetProcAddress(g_oglu_hmodule, "glGetString");
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glGetTexImage = (PFNGLGETTEXIMAGEPROC)GetProcAddress(g_oglu_hmodule, "glGetTexImage");
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glPixelStorei = (PFNGLPIXELSTOREIPROC)GetProcAddress(g_oglu_hmodule, "glPixelStorei");
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glEnable = (PFNGLENABLEPROC)GetProcAddress(g_oglu_hmodule, "glEnable");
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glClear = (PFNGLCLEARPROC)GetProcAddress(g_oglu_hmodule, "glClear");
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glBegin = (PFNGLBEGINPROC)GetProcAddress(g_oglu_hmodule, "glBegin");
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glEnd = (PFNGLENDPROC)GetProcAddress(g_oglu_hmodule, "glEnd");
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glTexCoord2f = (PFNGLTEXCOORD2FPROC)GetProcAddress(g_oglu_hmodule, "glTexCoord2f");
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glVertex2f = (PFNGLVERTEX2FPROC)GetProcAddress(g_oglu_hmodule, "glVertex2f");
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}
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return xwglCreateContext && xwglDeleteContext && xwglGetProcAddress && xwglMakeCurrent && glViewport &&
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glBindTexture && glGenTextures && glTexParameteri && glDeleteTextures && glTexImage2D &&
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glDrawElements && glTexSubImage2D && glGetError && glGetString && glGetTexImage && glPixelStorei &&
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glEnable && glClear && glBegin && glEnd && glTexCoord2f && glVertex2f;
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}
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void oglu_init()
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{
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// Program
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glCreateProgram = (PFNGLCREATEPROGRAMPROC)xwglGetProcAddress("glCreateProgram");
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glDeleteProgram = (PFNGLDELETEPROGRAMPROC)xwglGetProcAddress("glDeleteProgram");
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glUseProgram = (PFNGLUSEPROGRAMPROC)xwglGetProcAddress("glUseProgram");
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glAttachShader = (PFNGLATTACHSHADERPROC)xwglGetProcAddress("glAttachShader");
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glDetachShader = (PFNGLDETACHSHADERPROC)xwglGetProcAddress("glDetachShader");
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glLinkProgram = (PFNGLLINKPROGRAMPROC)xwglGetProcAddress("glLinkProgram");
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glGetProgramiv = (PFNGLGETPROGRAMIVPROC)xwglGetProcAddress("glGetProgramiv");
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glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC)xwglGetProcAddress("glGetShaderInfoLog");
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glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC)xwglGetProcAddress("glGetUniformLocation");
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glUniform1i = (PFNGLUNIFORM1IPROC)xwglGetProcAddress("glUniform1i");
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glUniform1iv = (PFNGLUNIFORM1IVPROC)xwglGetProcAddress("glUniform1iv");
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glUniform2iv = (PFNGLUNIFORM2IVPROC)xwglGetProcAddress("glUniform2iv");
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glUniform3iv = (PFNGLUNIFORM3IVPROC)xwglGetProcAddress("glUniform3iv");
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glUniform4iv = (PFNGLUNIFORM4IVPROC)xwglGetProcAddress("glUniform4iv");
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glUniform1f = (PFNGLUNIFORM1FPROC)xwglGetProcAddress("glUniform1f");
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glUniform1fv = (PFNGLUNIFORM1FVPROC)xwglGetProcAddress("glUniform1fv");
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glUniform2fv = (PFNGLUNIFORM2FVPROC)xwglGetProcAddress("glUniform2fv");
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glUniform3fv = (PFNGLUNIFORM3FVPROC)xwglGetProcAddress("glUniform3fv");
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glUniform4fv = (PFNGLUNIFORM4FVPROC)xwglGetProcAddress("glUniform4fv");
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glUniform4f = (PFNGLUNIFORM4FPROC)xwglGetProcAddress("glUniform4f");
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glUniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC)xwglGetProcAddress("glUniformMatrix4fv");
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glGetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC)xwglGetProcAddress("glGetAttribLocation");
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glVertexAttrib1f = (PFNGLVERTEXATTRIB1FPROC)xwglGetProcAddress("glVertexAttrib1f");
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glVertexAttrib1fv = (PFNGLVERTEXATTRIB1FVPROC)xwglGetProcAddress("glVertexAttrib1fv");
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glVertexAttrib2fv = (PFNGLVERTEXATTRIB2FVPROC)xwglGetProcAddress("glVertexAttrib2fv");
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glVertexAttrib3fv = (PFNGLVERTEXATTRIB3FVPROC)xwglGetProcAddress("glVertexAttrib3fv");
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glVertexAttrib4fv = (PFNGLVERTEXATTRIB4FVPROC)xwglGetProcAddress("glVertexAttrib4fv");
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glEnableVertexAttribArray = (PFNGLENABLEVERTEXATTRIBARRAYPROC)xwglGetProcAddress("glEnableVertexAttribArray");
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glBindAttribLocation = (PFNGLBINDATTRIBLOCATIONPROC)xwglGetProcAddress("glBindAttribLocation");
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glCreateShader = (PFNGLCREATESHADERPROC)xwglGetProcAddress("glCreateShader");
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glDeleteShader = (PFNGLDELETESHADERPROC)xwglGetProcAddress("glDeleteShader");
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glShaderSource = (PFNGLSHADERSOURCEPROC)xwglGetProcAddress("glShaderSource");
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glCompileShader = (PFNGLCOMPILESHADERPROC)xwglGetProcAddress("glCompileShader");
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glGetShaderiv = (PFNGLGETSHADERIVPROC)xwglGetProcAddress("glGetShaderiv");
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glGenBuffers = (PFNGLGENBUFFERSPROC)xwglGetProcAddress("glGenBuffers");
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glBindBuffer = (PFNGLBINDBUFFERPROC)xwglGetProcAddress("glBindBuffer");
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glBufferData = (PFNGLBUFFERDATAPROC)xwglGetProcAddress("glBufferData");
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glMapBuffer = (PFNGLMAPBUFFERPROC)xwglGetProcAddress("glMapBuffer");
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glUnmapBuffer = (PFNGLUNMAPBUFFERPROC)xwglGetProcAddress("glUnmapBuffer");
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glBufferSubData = (PFNGLBUFFERSUBDATAPROC)xwglGetProcAddress("glBufferSubData");
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glVertexAttribPointer = (PFNGLVERTEXATTRIBPOINTERPROC)xwglGetProcAddress("glVertexAttribPointer");
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glDeleteBuffers = (PFNGLDELETEBUFFERSPROC)xwglGetProcAddress("glDeleteBuffers");
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glGenVertexArrays = (PFNGLGENVERTEXARRAYSPROC)xwglGetProcAddress("glGenVertexArrays");
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glBindVertexArray = (PFNGLBINDVERTEXARRAYPROC)xwglGetProcAddress("glBindVertexArray");
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glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSPROC)xwglGetProcAddress("glDeleteVertexArrays");
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glActiveTexture = (PFNGLACTIVETEXTUREPROC)xwglGetProcAddress("glActiveTexture");
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glGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC)xwglGetProcAddress("glGenFramebuffers");
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glBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC)xwglGetProcAddress("glBindFramebuffer");
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glFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC)xwglGetProcAddress("glFramebufferTexture2D");
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glDrawBuffers = (PFNGLDRAWBUFFERSPROC)xwglGetProcAddress("glDrawBuffers");
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glCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC)xwglGetProcAddress("glCheckFramebufferStatus");
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glDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC)xwglGetProcAddress("glDeleteFramebuffers");
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wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)xwglGetProcAddress("wglSwapIntervalEXT");
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wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)xwglGetProcAddress("wglGetExtensionsStringARB");
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glTexBuffer = (PFNGLTEXBUFFERPROC)xwglGetProcAddress("glTexBuffer");
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char *glversion = (char *)glGetString(GL_VERSION);
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if (glversion)
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{
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strncpy(g_oglu_version, glversion, sizeof(g_oglu_version)-1);
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const char deli[2] = " ";
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strtok(g_oglu_version, deli);
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}
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else
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g_oglu_version[0] = '0';
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g_oglu_got_version2 = glGetUniformLocation && glActiveTexture && glUniform1i;
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g_oglu_got_version3 = glGenFramebuffers && glBindFramebuffer && glFramebufferTexture2D && glDrawBuffers &&
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glCheckFramebufferStatus && glUniform4f && glActiveTexture && glUniform1i &&
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glGetAttribLocation && glGenBuffers && glBindBuffer && glBufferData && glVertexAttribPointer &&
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glEnableVertexAttribArray && glUniform2fv && glUniformMatrix4fv && glGenVertexArrays && glBindVertexArray &&
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glGetUniformLocation && glversion && glversion[0] != '2';
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}
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BOOL oglu_ext_exists(char *ext, HDC hdc)
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{
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char *glext = (char *)glGetString(GL_EXTENSIONS);
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if (glext)
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{
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if (strstr(glext, ext))
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return TRUE;
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}
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if (wglGetExtensionsStringARB)
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{
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char *wglext = (char *)wglGetExtensionsStringARB(hdc);
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if (wglext)
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{
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if (strstr(wglext, ext))
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return TRUE;
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}
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}
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return FALSE;
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}
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GLuint oglu_build_program(const GLchar *vertSource, const GLchar *fragSource)
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{
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if (!glCreateShader || !glShaderSource || !glCompileShader || !glCreateProgram ||
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!glAttachShader || !glLinkProgram || !glUseProgram || !glDetachShader)
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return 0;
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GLuint vert_shader = glCreateShader(GL_VERTEX_SHADER);
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GLuint frag_shader = glCreateShader(GL_FRAGMENT_SHADER);
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if (!vert_shader || !frag_shader)
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return 0;
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glShaderSource(vert_shader, 1, &vertSource, NULL);
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glShaderSource(frag_shader, 1, &fragSource, NULL);
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GLint is_compiled = 0;
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glCompileShader(vert_shader);
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if (glGetShaderiv)
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{
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glGetShaderiv(vert_shader, GL_COMPILE_STATUS, &is_compiled);
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if (is_compiled == GL_FALSE)
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{
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if (glDeleteShader)
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glDeleteShader(vert_shader);
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return 0;
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}
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}
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glCompileShader(frag_shader);
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if (glGetShaderiv)
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{
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glGetShaderiv(frag_shader, GL_COMPILE_STATUS, &is_compiled);
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if (is_compiled == GL_FALSE)
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{
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if (glDeleteShader)
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{
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glDeleteShader(frag_shader);
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glDeleteShader(vert_shader);
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}
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return 0;
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}
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}
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GLuint program = glCreateProgram();
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if (program)
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{
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glAttachShader(program, vert_shader);
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glAttachShader(program, frag_shader);
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glLinkProgram(program);
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glDetachShader(program, vert_shader);
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glDetachShader(program, frag_shader);
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glDeleteShader(vert_shader);
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glDeleteShader(frag_shader);
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if (glGetProgramiv)
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{
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GLint is_linked = 0;
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glGetProgramiv(program, GL_LINK_STATUS, &is_linked);
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if (is_linked == GL_FALSE)
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{
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if (glDeleteProgram)
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glDeleteProgram(program);
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return 0;
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}
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}
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}
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return program;
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}
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GLuint oglu_build_program_from_file(const char *filePath)
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{
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GLuint program = 0;
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FILE *file = fopen(filePath, "rb");
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if (file)
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{
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fseek(file, 0, SEEK_END);
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long file_size = ftell(file);
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fseek(file, 0, SEEK_SET);
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char *source = file_size > 0 ? calloc(file_size + 1, 1) : NULL;
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if (source)
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{
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fread(source, file_size, 1, file);
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fclose(file);
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char *vert_source = calloc(file_size + 50, 1);
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char *frag_source = calloc(file_size + 50, 1);
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if (frag_source && vert_source)
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{
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char *version_start = strstr(source, "#version");
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if (version_start)
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{
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const char deli[2] = "\n";
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char *version = strtok(version_start, deli);
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strcpy(vert_source, source);
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strcpy(frag_source, source);
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strcat(vert_source, "\n#define VERTEX\n");
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strcat(frag_source, "\n#define FRAGMENT\n");
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strcat(vert_source, version + strlen(version) + 1);
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strcat(frag_source, version + strlen(version) + 1);
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program = oglu_build_program(vert_source, frag_source);
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}
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else
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{
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strcpy(vert_source, "#define VERTEX\n");
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strcpy(frag_source, "#define FRAGMENT\n");
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strcat(vert_source, source);
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strcat(frag_source, source);
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program = oglu_build_program(vert_source, frag_source);
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}
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free(vert_source);
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free(frag_source);
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}
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free(source);
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}
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}
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return program;
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}
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