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SWBF2-Classic-Msh-Viewer
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OpenGLController: moved some code around 

shader: throw errors
This commit is contained in:
Anakin 2016-09-08 17:41:26 +02:00
parent d97a917a5e
commit 8955fc91ea
3 changed files with 51 additions and 40 deletions
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62
MshViewer/Source/OpenGlController.cpp
View File

@ -99,34 +99,6 @@ void OpenGLController::processInit()
// draw vertics only from one side
glEnable(GL_CULL_FACE);
// generate stuff
glGenVertexArrays(1, &gluiVertexArrayID);
glBindVertexArray(gluiVertexArrayID);
glGenBuffers(1, &gluiVertexBufferID);
glGenBuffers(1, &gluiUVBufferID);
gluiShaderPrgmID = LoadShaders(VERTEX_SHADER, FRAGMENT_SHADER);
gluiMatrixID = glGetUniformLocation(gluiShaderPrgmID, "MVP");
gluiSamplerID = glGetUniformLocation(gluiShaderPrgmID, "textureSampler");
vfVertices = loadData();
vfUV = loadUV();
glGenTextures(1, &gluiTextureID);
glBindTexture(GL_TEXTURE_2D, gluiTextureID);
TextureTGA tempTex(TEXTURE_NAME);
glTexImage2D(GL_TEXTURE_2D, 0, tempTex.hasAlpha() ? GL_RGBA : GL_RGB, tempTex.getWidth(), tempTex.getHeight(), 0, tempTex.hasAlpha() ? GL_BGRA : GL_BGR, GL_UNSIGNED_BYTE, tempTex.getData().data());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glGenerateMipmap(GL_TEXTURE_2D);
loadMsh("");
}
void OpenGLController::startGLFW()
@ -287,6 +259,40 @@ void OpenGLController::updateScene()
void OpenGLController::loadMsh(const char * path)
{
// generate stuff
glGenVertexArrays(1, &gluiVertexArrayID);
glBindVertexArray(gluiVertexArrayID);
glGenBuffers(1, &gluiVertexBufferID);
glGenBuffers(1, &gluiUVBufferID);
try
{
gluiShaderPrgmID = LoadShaders(VERTEX_SHADER, FRAGMENT_SHADER);
}
catch (std::invalid_argument e)
{
MessageBox(NULL, e.what(), "MeshViewer 2.0 Error", MB_OK | MB_ICONERROR);
exit(1);
}
gluiMatrixID = glGetUniformLocation(gluiShaderPrgmID, "MVP");
gluiSamplerID = glGetUniformLocation(gluiShaderPrgmID, "textureSampler");
// get data
vfVertices = loadData();
vfUV = loadUV();
glGenTextures(1, &gluiTextureID);
glBindTexture(GL_TEXTURE_2D, gluiTextureID);
TextureTGA tempTex(TEXTURE_NAME);
glTexImage2D(GL_TEXTURE_2D, 0, tempTex.hasAlpha() ? GL_RGBA : GL_RGB, tempTex.getWidth(), tempTex.getHeight(), 0, tempTex.hasAlpha() ? GL_BGRA : GL_BGR, GL_UNSIGNED_BYTE, tempTex.getData().data());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glGenerateMipmap(GL_TEXTURE_2D);
glBindBuffer(GL_ARRAY_BUFFER, gluiVertexBufferID);
glBufferData(

27
MshViewer/Source/shader.cpp
View File

@ -1,7 +1,5 @@
#include <stdio.h>
#include <string>
#include <vector>
#include <iostream>
#include <fstream>
#include <algorithm>
using namespace std;
@ -27,10 +25,12 @@ GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
}else{
printf("Impossible to open %s. Are you in the right directory ? Don't forget to read the FAQ !\n", vertex_file_path);
getchar();
return 0;
}
else
{
std::string message("File not found: ");
message += std::string(vertex_file_path);
throw std::invalid_argument(message.c_str());
}
// Read the Fragment Shader code from the file
@ -42,13 +42,18 @@ GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
}
else
{
std::string message("File not found: ");
message += std::string(fragment_file_path);
throw std::invalid_argument(message.c_str());
}
GLint Result = GL_FALSE;
int InfoLogLength;
// Compile Vertex Shader
printf("Compiling shader : %s\n", vertex_file_path);
char const * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL);
glCompileShader(VertexShaderID);
@ -59,13 +64,12 @@ GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path
if ( InfoLogLength > 0 ){
std::vector<char> VertexShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
printf("%s\n", &VertexShaderErrorMessage[0]);
throw std::invalid_argument(VertexShaderErrorMessage.data());
}
// Compile Fragment Shader
printf("Compiling shader : %s\n", fragment_file_path);
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL);
glCompileShader(FragmentShaderID);
@ -76,13 +80,12 @@ GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path
if ( InfoLogLength > 0 ){
std::vector<char> FragmentShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
printf("%s\n", &FragmentShaderErrorMessage[0]);
throw std::invalid_argument(FragmentShaderErrorMessage.data());
}
// Link the program
printf("Linking program\n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
@ -94,7 +97,7 @@ GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path
if ( InfoLogLength > 0 ){
std::vector<char> ProgramErrorMessage(InfoLogLength+1);
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
printf("%s\n", &ProgramErrorMessage[0]);
throw std::invalid_argument(ProgramErrorMessage.data());
}

2
MshViewer/main.cpp
View File

@ -8,6 +8,8 @@ int main(int argc, char** argv)
{
OpenGLController *scene = OpenGLController::getInstance();
scene->loadMsh("test.msh");
do {
scene->updateScene();
} while (!glfwWindowShouldClose(scene->getWindow()));