shader loading works?
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1fe0cc1d40
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5a5295231b
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@ -1 +1 @@
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# empty
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// empty
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@ -46,8 +46,16 @@ string ShaderProgram::baseName() {
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}
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}
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ShaderProgram::ShaderProgram(Base base, char **vertexSource,
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char **fragSource) {
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/**
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* @param vertexSource C style string with NULL termination
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* @param fragSource C style string with NULL termination
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*/
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ShaderProgram::ShaderProgram(Base base, string vertexSource,
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string fragSource) {
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int success;
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char infoLog[512];
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const char* vertexSource_c = vertexSource.c_str();
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const char* fragSource_c = fragSource.c_str();
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this->base = base;
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BOOST_LOG_TRIVIAL(info) << "With base program \"" << this->baseName() << "\"";
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// NOTE: char arrays and char pointers are not actually the same.
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@ -56,18 +64,12 @@ ShaderProgram::ShaderProgram(Base base, char **vertexSource,
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BOOST_LOG_TRIVIAL(trace) << "creating empty shaders";
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this->vertex = glCreateShader(GL_VERTEX_SHADER);
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this->frag = glCreateShader(GL_FRAGMENT_SHADER);
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BOOST_LOG_TRIVIAL(trace) << "loading vertex shader";
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glShaderSource(this->vertex, 1, vertexSource, NULL);
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glShaderSource(this->vertex, 1, &vertexSource_c, NULL);
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BOOST_LOG_TRIVIAL(trace) << "compiling vertex shader";
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glCompileShader(this->vertex);
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BOOST_LOG_TRIVIAL(trace) << "loading fragments shader";
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glShaderSource(this->frag, 2, fragSource, NULL);
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BOOST_LOG_TRIVIAL(trace) << "compiling fragments shader";
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glCompileShader(this->frag);
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// check if the compilation was successful
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int success;
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char infoLog[512];
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// check if it worked
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glGetShaderiv(this->vertex, GL_COMPILE_STATUS, &success);
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if (!success) {
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glGetShaderInfoLog(this->vertex, 512, NULL, infoLog);
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@ -75,6 +77,13 @@ ShaderProgram::ShaderProgram(Base base, char **vertexSource,
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<< infoLog << std::endl;
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exit(EXIT_SHADER);
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}
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/* FIXME: Optionally include a frag shader
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BOOST_LOG_TRIVIAL(trace) << "loading fragments shader";
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glShaderSource(this->frag, 1, &fragSource_c, NULL);
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BOOST_LOG_TRIVIAL(trace) << "compiling fragments shader";
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glCompileShader(this->frag);
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// check if it worked
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glGetShaderiv(this->frag, GL_COMPILE_STATUS, &success);
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if (!success) {
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glGetShaderInfoLog(this->frag, 512, NULL, infoLog);
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@ -82,6 +91,7 @@ ShaderProgram::ShaderProgram(Base base, char **vertexSource,
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<< infoLog << std::endl;
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exit(EXIT_SHADER);
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}
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*/
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}
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/** defines the base program behavior.
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@ -10,7 +10,7 @@ public:
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enum Base { Empty, Triangle };
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std::string baseName();
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static Base baseFromName(std::string name);
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ShaderProgram(Base base, char** vertexSource, char** fragSource);
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ShaderProgram(Base base, std::string vertexSource, std::string fragSource);
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int run(GLFWwindow* window);
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protected:
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53
src/main.cpp
53
src/main.cpp
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@ -1,8 +1,11 @@
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#include <boost/log/trivial.hpp>
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#include <cstddef>
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#include <cstdio>
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#include <cstdlib>
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#include <fstream>
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#include <iomanip>
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#include <iostream>
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#include <string>
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#include "main.hpp"
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@ -61,41 +64,47 @@ int main(int argc, char **argv) {
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}
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/* find the requested */
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ShaderProgram::Base base = ShaderProgram::baseFromName(vm["base"].as<string>());
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ShaderProgram::Base base =
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ShaderProgram::baseFromName(vm["base"].as<string>());
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/* setup the shader program */
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BOOST_LOG_TRIVIAL(trace) << "Reading shader files";
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auto fvert = fopen(vm["vert"].as<string>().c_str(), "r");
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auto ffrag = fopen(vm["frag"].as<string>().c_str(), "r");
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ifstream fvert(vm["vert"].as<string>());
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ifstream ffrag(vm["frag"].as<string>());
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if (fvert.fail()) {
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BOOST_LOG_TRIVIAL(fatal) << "failed to read vertex shader file";
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exit(EXIT_IO);
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}
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if (ffrag.fail()) {
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BOOST_LOG_TRIVIAL(fatal) << "failed to read fragments shader file";
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exit(EXIT_IO);
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}
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string buf;
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string vert;
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string frag;
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while(!fvert.eof()) {
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getline(fvert, buf);
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vert.append(buf + "\n");
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}
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while(!ffrag.eof()) {
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getline(ffrag, buf);
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frag.append(buf + "\n");
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}
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// get file sizes
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BOOST_LOG_TRIVIAL(trace) << "Reading shader file sizes";
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fseek(fvert, 0L, SEEK_END);
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fseek(ffrag, 0L, SEEK_END);
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size_t svert = ftell(fvert);
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size_t sfrag = ftell(ffrag);
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fseek(fvert, 0L, SEEK_SET);
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fseek(ffrag, 0L, SEEK_SET);
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BOOST_LOG_TRIVIAL(trace) << "allocating " << svert
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<< " B for vert source file";
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BOOST_LOG_TRIVIAL(trace) << "allocating " << sfrag
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<< " B for frag source file";
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char *vert = (char *)malloc(svert + 1);
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char *frag = (char *)malloc(sfrag + 1);
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fread(vert, sizeof(char), svert, fvert);
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fread(frag, sizeof(char), sfrag, ffrag);
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BOOST_LOG_TRIVIAL(debug) << "vert file:\n```glsl\n"
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<< vert << "```\n"
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<< svert << "B";
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<< vert.size() << "B";
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BOOST_LOG_TRIVIAL(debug) << "frag file:\n```glsl\n"
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<< frag << "```\n"
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<< sfrag << "B";
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fclose(fvert);
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fclose(ffrag);
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<< frag.size() << "B";
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fvert.close();
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ffrag.close();
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BOOST_LOG_TRIVIAL(trace) << "Creating ShaderProgram";
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// TODO: determinde ShaderProgram::Base with a CLI arg
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ShaderProgram shaderProgram(base, &vert, &frag);
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ShaderProgram shaderProgram(base, vert, frag);
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/* Run our main program */
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BOOST_LOG_TRIVIAL(trace) << "Starting mainWindow";
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