GPUParticles: Move opengl function to newly created glwrap.cpp
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14902 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
vincentlj
179
src/graphics/glwrap.cpp
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179
src/graphics/glwrap.cpp
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@@ -0,0 +1,179 @@
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#include "graphics\glwrap.hpp"
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#include <fstream>
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#include <string>
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#ifdef _IRR_WINDOWS_API_
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#define IRR_OGL_LOAD_EXTENSION(X) wglGetProcAddress(reinterpret_cast<const char*>(X))
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PFNGLGENTRANSFORMFEEDBACKSPROC glGenTransformFeedbacks;
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PFNGLBINDTRANSFORMFEEDBACKPROC glBindTransformFeedback;
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PFNGLDRAWTRANSFORMFEEDBACKPROC glDrawTransformFeedback;
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PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
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PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
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PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
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PFNGLBINDBUFFERBASEPROC glBindBufferBase;
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PFNGLGENBUFFERSPROC glGenBuffers;
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PFNGLBINDBUFFERPROC glBindBuffer;
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PFNGLBUFFERDATAPROC glBufferData;
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PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
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PFNGLCREATESHADERPROC glCreateShader;
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PFNGLCOMPILESHADERPROC glCompileShader;
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PFNGLSHADERSOURCEPROC glShaderSource;
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PFNGLCREATEPROGRAMPROC glCreateProgram;
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PFNGLATTACHSHADERPROC glAttachShader;
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PFNGLLINKPROGRAMPROC glLinkProgram;
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PFNGLUSEPROGRAMPROC glUseProgram;
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PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
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PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
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PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
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PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;
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PFNGLUNIFORM1FPROC glUniform1f;
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PFNGLUNIFORM3FPROC glUniform3f;
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PFNGLDELETESHADERPROC glDeleteShader;
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PFNGLGETSHADERIVPROC glGetShaderiv;
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PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
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PFNGLACTIVETEXTUREPROC glActiveTexture;
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PFNGLUNIFORM2FPROC glUniform2f;
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PFNGLUNIFORM1IPROC glUniform1i;
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PFNGLGETPROGRAMIVPROC glGetProgramiv;
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PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
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PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
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PFNGLBLENDEQUATIONPROC glBlendEquation;
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PFNGLVERTEXATTRIBDIVISORPROC glVertexAttribDivisor;
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PFNGLDRAWARRAYSINSTANCEDPROC glDrawArraysInstanced;
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PFNGLDELETEBUFFERSPROC glDeleteBuffers;
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#endif
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static bool is_gl_init = false;
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void initGL()
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{
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if (is_gl_init)
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return;
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is_gl_init = true;
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#ifdef _IRR_WINDOWS_API_
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glGenTransformFeedbacks = (PFNGLGENTRANSFORMFEEDBACKSPROC)IRR_OGL_LOAD_EXTENSION("glGenTransformFeedbacks");
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glBindTransformFeedback = (PFNGLBINDTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glBindTransformFeedback");
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glDrawTransformFeedback = (PFNGLDRAWTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glDrawTransformFeedback");
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glBeginTransformFeedback = (PFNGLBEGINTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glBeginTransformFeedback");
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glEndTransformFeedback = (PFNGLENDTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glEndTransformFeedback");
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glBindBufferBase = (PFNGLBINDBUFFERBASEPROC)IRR_OGL_LOAD_EXTENSION("glBindBufferBase");
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glGenBuffers = (PFNGLGENBUFFERSPROC)IRR_OGL_LOAD_EXTENSION("glGenBuffers");
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glBindBuffer = (PFNGLBINDBUFFERPROC)IRR_OGL_LOAD_EXTENSION("glBindBuffer");
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glBufferData = (PFNGLBUFFERDATAPROC)IRR_OGL_LOAD_EXTENSION("glBufferData");
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glVertexAttribPointer = (PFNGLVERTEXATTRIBPOINTERPROC)IRR_OGL_LOAD_EXTENSION("glVertexAttribPointer");
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glCreateShader = (PFNGLCREATESHADERPROC)IRR_OGL_LOAD_EXTENSION("glCreateShader");
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glCompileShader = (PFNGLCOMPILESHADERPROC)IRR_OGL_LOAD_EXTENSION("glCompileShader");
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glShaderSource = (PFNGLSHADERSOURCEPROC)IRR_OGL_LOAD_EXTENSION("glShaderSource");
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glCreateProgram = (PFNGLCREATEPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glCreateProgram");
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glAttachShader = (PFNGLATTACHSHADERPROC)IRR_OGL_LOAD_EXTENSION("glAttachShader");
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glLinkProgram = (PFNGLLINKPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glLinkProgram");
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glUseProgram = (PFNGLUSEPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glUseProgram");
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glEnableVertexAttribArray = (PFNGLENABLEVERTEXATTRIBARRAYPROC)IRR_OGL_LOAD_EXTENSION("glEnableVertexAttribArray");
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glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC)IRR_OGL_LOAD_EXTENSION("glGetUniformLocation");
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glUniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC)IRR_OGL_LOAD_EXTENSION("glUniformMatrix4fv");
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glUniform1f = (PFNGLUNIFORM1FPROC)IRR_OGL_LOAD_EXTENSION("glUniform1f");
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glUniform3f = (PFNGLUNIFORM3FPROC)IRR_OGL_LOAD_EXTENSION("glUniform3f");
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glDisableVertexAttribArray = (PFNGLDISABLEVERTEXATTRIBARRAYPROC)IRR_OGL_LOAD_EXTENSION("glDisableVertexAttribArray");
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glDeleteShader = (PFNGLDELETESHADERPROC)IRR_OGL_LOAD_EXTENSION("glDeleteShader");
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glGetShaderiv = (PFNGLGETSHADERIVPROC)IRR_OGL_LOAD_EXTENSION("glGetShaderiv");
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glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC)IRR_OGL_LOAD_EXTENSION("glGetShaderInfoLog");
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glActiveTexture = (PFNGLACTIVETEXTUREPROC)IRR_OGL_LOAD_EXTENSION("glActiveTexture");
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glUniform2f = (PFNGLUNIFORM2FPROC)IRR_OGL_LOAD_EXTENSION("glUniform2f");
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glUniform1i = (PFNGLUNIFORM1IPROC)IRR_OGL_LOAD_EXTENSION("glUniform1i");
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glGetProgramiv = (PFNGLGETPROGRAMIVPROC)IRR_OGL_LOAD_EXTENSION("glGetProgramiv");
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glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC)IRR_OGL_LOAD_EXTENSION("glGetProgramInfoLog");
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glTransformFeedbackVaryings = (PFNGLTRANSFORMFEEDBACKVARYINGSPROC)IRR_OGL_LOAD_EXTENSION("glTransformFeedbackVaryings");
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glGetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC)IRR_OGL_LOAD_EXTENSION("glGetAttribLocation");
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glBlendEquation = (PFNGLBLENDEQUATIONPROC)IRR_OGL_LOAD_EXTENSION("glBlendEquation");
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glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISORPROC)IRR_OGL_LOAD_EXTENSION("glVertexAttribDivisor");
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glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDPROC)IRR_OGL_LOAD_EXTENSION("glDrawArraysInstanced");
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glDeleteBuffers = (PFNGLDELETEBUFFERSPROC)IRR_OGL_LOAD_EXTENSION("glDeleteBuffers");
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#endif
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}
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// Mostly from shader tutorial
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static
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GLuint LoadShader(const char * file, unsigned type) {
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GLuint Id = glCreateShader(type);
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std::string Code;
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std::ifstream Stream(file, std::ios::in);
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if (Stream.is_open())
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{
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std::string Line = "";
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while (getline(Stream, Line))
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Code += "\n" + Line;
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Stream.close();
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}
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GLint Result = GL_FALSE;
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int InfoLogLength;
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printf("Compiling shader : %s\n", file);
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char const * SourcePointer = Code.c_str();
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int length = strlen(SourcePointer);
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glShaderSource(Id, 1, &SourcePointer, &length);
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glCompileShader(Id);
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glGetShaderiv(Id, GL_COMPILE_STATUS, &Result);
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if (Result == GL_FALSE) {
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glGetShaderiv(Id, GL_INFO_LOG_LENGTH, &InfoLogLength);
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char *ErrorMessage = new char[InfoLogLength];
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glGetShaderInfoLog(Id, InfoLogLength, NULL, ErrorMessage);
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printf(ErrorMessage);
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delete[] ErrorMessage;
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}
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return Id;
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}
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GLuint LoadProgram(const char * vertex_file_path, const char * fragment_file_path) {
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GLuint VertexShaderID = LoadShader(vertex_file_path, GL_VERTEX_SHADER);
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GLuint FragmentShaderID = LoadShader(fragment_file_path, GL_FRAGMENT_SHADER);
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GLuint ProgramID = glCreateProgram();
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glAttachShader(ProgramID, VertexShaderID);
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glAttachShader(ProgramID, FragmentShaderID);
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glLinkProgram(ProgramID);
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GLint Result = GL_FALSE;
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int InfoLogLength;
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glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
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if (Result == GL_FALSE) {
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glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
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char *ErrorMessage = new char[InfoLogLength];
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glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, ErrorMessage);
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printf(ErrorMessage);
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delete[] ErrorMessage;
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}
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glDeleteShader(VertexShaderID);
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glDeleteShader(FragmentShaderID);
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return ProgramID;
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}
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GLuint LoadTFBProgram(const char * vertex_file_path, const char **varyings, unsigned varyingscount) {
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GLuint Shader = LoadShader(vertex_file_path, GL_VERTEX_SHADER);
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GLuint Program = glCreateProgram();
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glAttachShader(Program, Shader);
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glTransformFeedbackVaryings(Program, varyingscount, varyings, GL_INTERLEAVED_ATTRIBS);
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glLinkProgram(Program);
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GLint Result = GL_FALSE;
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int InfoLogLength;
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glGetProgramiv(Program, GL_LINK_STATUS, &Result);
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if (Result == GL_FALSE) {
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glGetProgramiv(Program, GL_INFO_LOG_LENGTH, &InfoLogLength);
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char *ErrorMessage = new char[InfoLogLength];
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glGetProgramInfoLog(Program, InfoLogLength, NULL, ErrorMessage);
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printf(ErrorMessage);
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delete[] ErrorMessage;
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}
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glDeleteShader(Shader);
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return Program;
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}
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void bindUniformToTextureUnit(GLuint location, GLuint texid, unsigned textureUnit) {
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glActiveTexture(GL_TEXTURE0 + textureUnit);
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glBindTexture(GL_TEXTURE_2D, texid);
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glUniform1i(location, textureUnit);
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}
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@@ -12,11 +12,59 @@
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# include <windows.h>
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# include <GL/gl.h>
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#else
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#define GL_GLEXT_PROTOTYPES
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# include <GL/gl.h>
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# include <GL/glext.h>
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#endif
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void initGL();
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GLuint LoadProgram(const char * vertex_file_path, const char * fragment_file_path);
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GLuint LoadTFBProgram(const char * vertex_file_path, const char **varyings, unsigned varyingscount);
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void bindUniformToTextureUnit(GLuint location, GLuint texid, unsigned textureUnit);
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// already includes glext.h, which defines useful GL constants.
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// COpenGLDriver has already loaded the extension GL functions we use (e.g glBeginQuery)
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#ifdef WIN32
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#include "../../lib/irrlicht/source/Irrlicht/COpenGLDriver.h"
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extern PFNGLGENTRANSFORMFEEDBACKSPROC glGenTransformFeedbacks;
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extern PFNGLBINDTRANSFORMFEEDBACKPROC glBindTransformFeedback;
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extern PFNGLDRAWTRANSFORMFEEDBACKPROC glDrawTransformFeedback;
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extern PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
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extern PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
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extern PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
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extern PFNGLBINDBUFFERBASEPROC glBindBufferBase;
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extern PFNGLGENBUFFERSPROC glGenBuffers;
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extern PFNGLBINDBUFFERPROC glBindBuffer;
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extern PFNGLBUFFERDATAPROC glBufferData;
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extern PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
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extern PFNGLCREATESHADERPROC glCreateShader;
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extern PFNGLCOMPILESHADERPROC glCompileShader;
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extern PFNGLSHADERSOURCEPROC glShaderSource;
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extern PFNGLCREATEPROGRAMPROC glCreateProgram;
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extern PFNGLATTACHSHADERPROC glAttachShader;
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extern PFNGLLINKPROGRAMPROC glLinkProgram;
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extern PFNGLUSEPROGRAMPROC glUseProgram;
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extern PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
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extern PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
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extern PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
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extern PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;
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extern PFNGLUNIFORM1FPROC glUniform1f;
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extern PFNGLUNIFORM3FPROC glUniform3f;
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extern PFNGLDELETESHADERPROC glDeleteShader;
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extern PFNGLGETSHADERIVPROC glGetShaderiv;
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extern PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
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extern PFNGLACTIVETEXTUREPROC glActiveTexture;
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extern PFNGLUNIFORM2FPROC glUniform2f;
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extern PFNGLUNIFORM1IPROC glUniform1i;
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extern PFNGLGETPROGRAMIVPROC glGetProgramiv;
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extern PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
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extern PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
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extern PFNGLBLENDEQUATIONPROC glBlendEquation;
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extern PFNGLVERTEXATTRIBDIVISORPROC glVertexAttribDivisor;
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extern PFNGLDRAWARRAYSINSTANCEDPROC glDrawArraysInstanced;
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extern PFNGLDELETEBUFFERSPROC glDeleteBuffers;
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#endif
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#endif
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@@ -1,189 +1,12 @@
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#include "graphics/irr_driver.hpp"
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#include "gpuparticles.h"
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#include <fstream>
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#include "io/file_manager.hpp"
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#include "config/user_config.hpp"
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#include <ICameraSceneNode.h>
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#include <IParticleSystemSceneNode.h>
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#ifdef _IRR_WINDOWS_API_
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#define IRR_OGL_LOAD_EXTENSION(X) wglGetProcAddress(reinterpret_cast<const char*>(X))
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PFNGLGENTRANSFORMFEEDBACKSPROC glGenTransformFeedbacks;
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PFNGLBINDTRANSFORMFEEDBACKPROC glBindTransformFeedback;
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PFNGLDRAWTRANSFORMFEEDBACKPROC glDrawTransformFeedback;
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PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
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PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
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PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
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PFNGLBINDBUFFERBASEPROC glBindBufferBase;
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PFNGLGENBUFFERSPROC glGenBuffers;
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PFNGLBINDBUFFERPROC glBindBuffer;
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PFNGLBUFFERDATAPROC glBufferData;
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PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
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PFNGLCREATESHADERPROC glCreateShader;
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PFNGLCOMPILESHADERPROC glCompileShader;
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PFNGLSHADERSOURCEPROC glShaderSource;
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PFNGLCREATEPROGRAMPROC glCreateProgram;
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PFNGLATTACHSHADERPROC glAttachShader;
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PFNGLLINKPROGRAMPROC glLinkProgram;
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PFNGLUSEPROGRAMPROC glUseProgram;
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PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
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PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
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PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
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PFNGLUNIFORMMATRIX4FVPROC glUniformMatrix4fv;
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PFNGLUNIFORM1FPROC glUniform1f;
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PFNGLUNIFORM3FPROC glUniform3f;
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PFNGLDELETESHADERPROC glDeleteShader;
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PFNGLGETSHADERIVPROC glGetShaderiv;
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PFNGLGETSHADERINFOLOGPROC glGetShaderInfoLog;
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PFNGLACTIVETEXTUREPROC glActiveTexture;
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PFNGLUNIFORM2FPROC glUniform2f;
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PFNGLUNIFORM1IPROC glUniform1i;
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PFNGLGETPROGRAMIVPROC glGetProgramiv;
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PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
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PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
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PFNGLBLENDEQUATIONPROC glBlendEquation;
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PFNGLVERTEXATTRIBDIVISORPROC glVertexAttribDivisor;
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PFNGLDRAWARRAYSINSTANCEDPROC glDrawArraysInstanced;
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PFNGLDELETEBUFFERSPROC glDeleteBuffers;
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#endif
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static bool is_gl_init = false;
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void initGL()
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{
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if (is_gl_init)
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return;
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is_gl_init = true;
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#ifdef _IRR_WINDOWS_API_
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glGenTransformFeedbacks = (PFNGLGENTRANSFORMFEEDBACKSPROC)IRR_OGL_LOAD_EXTENSION("glGenTransformFeedbacks");
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glBindTransformFeedback = (PFNGLBINDTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glBindTransformFeedback");
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glDrawTransformFeedback = (PFNGLDRAWTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glDrawTransformFeedback");
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glBeginTransformFeedback = (PFNGLBEGINTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glBeginTransformFeedback");
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glEndTransformFeedback = (PFNGLENDTRANSFORMFEEDBACKPROC)IRR_OGL_LOAD_EXTENSION("glEndTransformFeedback");
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glBindBufferBase = (PFNGLBINDBUFFERBASEPROC)IRR_OGL_LOAD_EXTENSION("glBindBufferBase");
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glGenBuffers = (PFNGLGENBUFFERSPROC)IRR_OGL_LOAD_EXTENSION("glGenBuffers");
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glBindBuffer = (PFNGLBINDBUFFERPROC)IRR_OGL_LOAD_EXTENSION("glBindBuffer");
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glBufferData = (PFNGLBUFFERDATAPROC)IRR_OGL_LOAD_EXTENSION("glBufferData");
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glVertexAttribPointer = (PFNGLVERTEXATTRIBPOINTERPROC)IRR_OGL_LOAD_EXTENSION("glVertexAttribPointer");
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glCreateShader = (PFNGLCREATESHADERPROC)IRR_OGL_LOAD_EXTENSION("glCreateShader");
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glCompileShader = (PFNGLCOMPILESHADERPROC)IRR_OGL_LOAD_EXTENSION("glCompileShader");
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glShaderSource = (PFNGLSHADERSOURCEPROC)IRR_OGL_LOAD_EXTENSION("glShaderSource");
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glCreateProgram = (PFNGLCREATEPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glCreateProgram");
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glAttachShader = (PFNGLATTACHSHADERPROC)IRR_OGL_LOAD_EXTENSION("glAttachShader");
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glLinkProgram = (PFNGLLINKPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glLinkProgram");
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glUseProgram = (PFNGLUSEPROGRAMPROC)IRR_OGL_LOAD_EXTENSION("glUseProgram");
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glEnableVertexAttribArray = (PFNGLENABLEVERTEXATTRIBARRAYPROC)IRR_OGL_LOAD_EXTENSION("glEnableVertexAttribArray");
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glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC)IRR_OGL_LOAD_EXTENSION("glGetUniformLocation");
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glUniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC)IRR_OGL_LOAD_EXTENSION("glUniformMatrix4fv");
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glUniform1f = (PFNGLUNIFORM1FPROC)IRR_OGL_LOAD_EXTENSION("glUniform1f");
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glUniform3f = (PFNGLUNIFORM3FPROC)IRR_OGL_LOAD_EXTENSION("glUniform3f");
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glDisableVertexAttribArray = (PFNGLDISABLEVERTEXATTRIBARRAYPROC)IRR_OGL_LOAD_EXTENSION("glDisableVertexAttribArray");
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glDeleteShader = (PFNGLDELETESHADERPROC)IRR_OGL_LOAD_EXTENSION("glDeleteShader");
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glGetShaderiv = (PFNGLGETSHADERIVPROC)IRR_OGL_LOAD_EXTENSION("glGetShaderiv");
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glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC)IRR_OGL_LOAD_EXTENSION("glGetShaderInfoLog");
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glActiveTexture = (PFNGLACTIVETEXTUREPROC)IRR_OGL_LOAD_EXTENSION("glActiveTexture");
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glUniform2f = (PFNGLUNIFORM2FPROC)IRR_OGL_LOAD_EXTENSION("glUniform2f");
|
||||
glUniform1i = (PFNGLUNIFORM1IPROC)IRR_OGL_LOAD_EXTENSION("glUniform1i");
|
||||
glGetProgramiv = (PFNGLGETPROGRAMIVPROC)IRR_OGL_LOAD_EXTENSION("glGetProgramiv");
|
||||
glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC)IRR_OGL_LOAD_EXTENSION("glGetProgramInfoLog");
|
||||
glTransformFeedbackVaryings = (PFNGLTRANSFORMFEEDBACKVARYINGSPROC)IRR_OGL_LOAD_EXTENSION("glTransformFeedbackVaryings");
|
||||
glGetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC)IRR_OGL_LOAD_EXTENSION("glGetAttribLocation");
|
||||
glBlendEquation = (PFNGLBLENDEQUATIONPROC)IRR_OGL_LOAD_EXTENSION("glBlendEquation");
|
||||
glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISORPROC)IRR_OGL_LOAD_EXTENSION("glVertexAttribDivisor");
|
||||
glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDPROC)IRR_OGL_LOAD_EXTENSION("glDrawArraysInstanced");
|
||||
glDeleteBuffers = (PFNGLDELETEBUFFERSPROC)IRR_OGL_LOAD_EXTENSION("glDeleteBuffers");
|
||||
#endif
|
||||
}
|
||||
|
||||
// Mostly from shader tutorial
|
||||
static
|
||||
GLuint LoadShader(const char * file, unsigned type) {
|
||||
GLuint Id = glCreateShader(type);
|
||||
std::string Code;
|
||||
std::ifstream Stream(file, std::ios::in);
|
||||
if (Stream.is_open())
|
||||
{
|
||||
std::string Line = "";
|
||||
while (getline(Stream, Line))
|
||||
Code += "\n" + Line;
|
||||
Stream.close();
|
||||
}
|
||||
GLint Result = GL_FALSE;
|
||||
int InfoLogLength;
|
||||
printf("Compiling shader : %s\n", file);
|
||||
char const * SourcePointer = Code.c_str();
|
||||
int length = strlen(SourcePointer);
|
||||
glShaderSource(Id, 1, &SourcePointer, &length);
|
||||
glCompileShader(Id);
|
||||
|
||||
glGetShaderiv(Id, GL_COMPILE_STATUS, &Result);
|
||||
if (Result == GL_FALSE) {
|
||||
glGetShaderiv(Id, GL_INFO_LOG_LENGTH, &InfoLogLength);
|
||||
char *ErrorMessage = new char[InfoLogLength];
|
||||
glGetShaderInfoLog(Id, InfoLogLength, NULL, ErrorMessage);
|
||||
printf(ErrorMessage);
|
||||
delete[] ErrorMessage;
|
||||
}
|
||||
|
||||
return Id;
|
||||
}
|
||||
|
||||
GLuint LoadProgram(const char * vertex_file_path, const char * fragment_file_path) {
|
||||
GLuint VertexShaderID = LoadShader(vertex_file_path, GL_VERTEX_SHADER);
|
||||
GLuint FragmentShaderID = LoadShader(fragment_file_path, GL_FRAGMENT_SHADER);
|
||||
|
||||
GLuint ProgramID = glCreateProgram();
|
||||
glAttachShader(ProgramID, VertexShaderID);
|
||||
glAttachShader(ProgramID, FragmentShaderID);
|
||||
glLinkProgram(ProgramID);
|
||||
|
||||
GLint Result = GL_FALSE;
|
||||
int InfoLogLength;
|
||||
glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
|
||||
if (Result == GL_FALSE) {
|
||||
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
|
||||
char *ErrorMessage = new char[InfoLogLength];
|
||||
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, ErrorMessage);
|
||||
printf(ErrorMessage);
|
||||
delete[] ErrorMessage;
|
||||
}
|
||||
|
||||
glDeleteShader(VertexShaderID);
|
||||
glDeleteShader(FragmentShaderID);
|
||||
|
||||
return ProgramID;
|
||||
}
|
||||
|
||||
GLuint LoadTFBProgram(const char * vertex_file_path, const char **varyings, unsigned varyingscount) {
|
||||
GLuint Shader = LoadShader(vertex_file_path, GL_VERTEX_SHADER);
|
||||
GLuint Program = glCreateProgram();
|
||||
glAttachShader(Program, Shader);
|
||||
glTransformFeedbackVaryings(Program, varyingscount, varyings, GL_INTERLEAVED_ATTRIBS);
|
||||
glLinkProgram(Program);
|
||||
|
||||
GLint Result = GL_FALSE;
|
||||
int InfoLogLength;
|
||||
glGetProgramiv(Program, GL_LINK_STATUS, &Result);
|
||||
if (Result == GL_FALSE) {
|
||||
glGetProgramiv(Program, GL_INFO_LOG_LENGTH, &InfoLogLength);
|
||||
char *ErrorMessage = new char[InfoLogLength];
|
||||
glGetProgramInfoLog(Program, InfoLogLength, NULL, ErrorMessage);
|
||||
printf(ErrorMessage);
|
||||
delete[] ErrorMessage;
|
||||
}
|
||||
glDeleteShader(Shader);
|
||||
return Program;
|
||||
}
|
||||
|
||||
GLuint getTextureGLuint(irr::video::ITexture *tex) {
|
||||
return static_cast<irr::video::COpenGLTexture*>(tex)->getOpenGLTextureName();
|
||||
}
|
||||
|
||||
void bindUniformToTextureUnit(GLuint location, GLuint texid, unsigned textureUnit) {
|
||||
glActiveTexture(GL_TEXTURE0 + textureUnit);
|
||||
glBindTexture(GL_TEXTURE_2D, texid);
|
||||
glUniform1i(location, textureUnit);
|
||||
return static_cast<irr::video::COpenGLTexture*>(tex)->getOpenGLTextureName();
|
||||
}
|
||||
|
||||
#define COMPONENTCOUNT 8
|
||||
|
||||
@@ -1,20 +1,12 @@
|
||||
#ifndef GPUPARTICLES_H
|
||||
#define GPUPARTICLES_H
|
||||
|
||||
#ifndef _IRR_WINDOWS_API_
|
||||
#define GL_GLEXT_PROTOTYPES 1
|
||||
#endif
|
||||
#include "graphics/glwrap.hpp"
|
||||
#include "../lib/irrlicht/source/Irrlicht/CParticleSystemSceneNode.h"
|
||||
#include <ISceneManager.h>
|
||||
#include <IParticleSystemSceneNode.h>
|
||||
|
||||
void initGL();
|
||||
GLuint LoadProgram(const char * vertex_file_path, const char * fragment_file_path);
|
||||
GLuint LoadTFBProgram(const char * vertex_file_path, const char **varyings, unsigned varyingscount);
|
||||
GLuint getTextureGLuint(irr::video::ITexture *tex);
|
||||
void bindUniformToTextureUnit(GLuint location, GLuint texid, unsigned textureUnit);
|
||||
|
||||
|
||||
class GPUParticle : public scene::ISceneNode {
|
||||
protected:
|
||||
|
||||
Reference in New Issue
Block a user