base setup for osx in place

2017-01-14 18:30:19 +00:00
commit 13d8e6e563
18 changed files with 1143 additions and 0 deletions
--- a/engine/shader.cpp
+++ b/engine/shader.cpp
@@ -0,0 +1,97 @@
+#include "pch.h"
+#include "shader.hpp"
+
+bool Shader::create(std::string vertex, std::string fragment)
+{
+    GLint status;
+    static char infolog[4096];
+    int infolen;
+    const GLchar* source;
+    
+    auto vs = glCreateShader(GL_VERTEX_SHADER);
+    if (!vs)
+    {
+        return false;
+    }
+    source = vertex.c_str();
+    glShaderSource(vs, 1, &source, nullptr);
+    glCompileShader(vs);
+    glGetShaderiv(vs, GL_COMPILE_STATUS, &status);
+    glGetShaderInfoLog(vs, sizeof(infolog), &infolen, infolog);
+    if (infolen > 0)
+        printf("VERTEX SHADER:\n%s", infolog);
+    if (status == 0)
+    {
+        glDeleteShader(vs);
+        return false;
+    }
+    
+    auto fs = glCreateShader(GL_FRAGMENT_SHADER);
+    if (!fs)
+    {
+        glDeleteShader(vs);
+        return false;
+    }
+    source = fragment.c_str();
+    glShaderSource(fs, 1, &source, nullptr);
+    glCompileShader(fs);
+    glGetShaderiv(fs, GL_COMPILE_STATUS, &status);
+    glGetShaderInfoLog(fs, sizeof(infolog), &infolen, infolog);
+    if (infolen > 0)
+        printf("FRAGMENT SHADER:\n%s", infolog);
+    if (status == 0)
+    {
+        glDeleteShader(vs);
+        glDeleteShader(fs);
+        return false;
+    }
+    
+    auto ps = glCreateProgram();
+    if (!ps)
+    {
+        glDeleteShader(vs);
+        glDeleteShader(fs);
+        return false;
+    }
+    glAttachShader(ps, vs);
+    glAttachShader(ps, fs);
+    glDeleteShader(vs);
+    glDeleteShader(fs);
+    
+    glBindAttribLocation(ps, 0, "pos");
+    glBindAttribLocation(ps, 1, "uvs");
+    
+    glLinkProgram(ps);
+    glGetShaderiv(ps, GL_LINK_STATUS, &status);
+    glGetShaderInfoLog(ps, sizeof(infolog), &infolen, infolog);
+    if (infolen > 0)
+        printf("LINK SHADER:\n%s", infolog);
+    if (status == 0)
+    {
+        glDeleteProgram(ps);
+        return false;
+    }
+    
+    prog = ps;
+    
+    return true;
+}
+void Shader::use()
+{
+    glUseProgram(prog);
+}
+void Shader::u_vec4(std::string name, const glm::vec4& v)
+{
+    auto loc = glGetUniformLocation(prog, name.c_str());
+    glUniform4fv(loc, 1, glm::value_ptr(v));
+}
+void Shader::u_mat4(std::string name, const glm::mat4& m)
+{
+    auto loc = glGetUniformLocation(prog, name.c_str());
+    glUniformMatrix4fv(loc, 1, GL_FALSE, glm::value_ptr(m));
+}
+void Shader::u_int(std::string name, int i)
+{
+    auto loc = glGetUniformLocation(prog, name.c_str());
+    glUniform1i(loc, i);
+}