Problem with light

main.cpp

#include "src/graphics/window.h"
#include "src/graphics/shader.h"
#include "src/maths/maths.h"

#include "src/graphics/buffers/buffer.h"
#include "src/graphics/buffers/indexbuffer.h"
#include "src/graphics/buffers/vertexarray.h"

int main()
{
    using namespace sparky;
    using namespace graphics;
    using namespace maths;

    Window window("Sparky!", 960, 540);
    // glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
    
#if 0
    GLfloat vertices[] =
    {
        0, 0, 0,
        8, 0, 0,
        0, 3, 0,
        0, 3, 0,
        8, 3, 0,
        8, 0, 0
    };
    
    GLuint vbo;
    glGenBuffers(1, &vbo);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
    glEnableVertexAttribArray(0);
#else
    GLfloat vertices[] =
    {
        0, 0, 0,
        0, 3, 0,
        8, 3, 0,
        8, 0, 0
    };
    
    GLushort indices[] =
    {
        0, 1, 2,
        2, 3, 0
    };
    
    GLfloat colorsA[] =
    {
        1, 0, 1, 1,
        1, 0, 1, 1,
        1, 0, 1, 1,
        1, 0, 1, 1
    };
    
    GLfloat colorsB[] =
    {
        0.2f, 0.3f, 0.8f, 1,
        0.2f, 0.3f, 0.8f, 1,
        0.2f, 0.3f, 0.8f, 1,
        0.2f, 0.3f, 0.8f, 1
    };
    
    VertexArray sprite1, sprite2;
    IndexBuffer ibo(indices, 6);
    
    sprite1.addBuffer(new Buffer(vertices, 4 * 3, 3), 0);
    sprite1.addBuffer(new Buffer(colorsA, 4 * 4, 4), 1);
    sprite2.addBuffer(new Buffer(vertices, 4 * 3, 3), 0);
    sprite2.addBuffer(new Buffer(colorsB, 4 * 4, 4), 1);
#endif
    
    mat4 ortho = mat4::orthographic(0.0f, 16.0f, 0.0f, 9.0f, -1.0f, 1.0f);
    
    Shader shader("/Users/djangolorentzson/documents/Sparky/Sparky-core/Sparky-core/src/shaders/basic.vert", "/Users/djangolorentzson/documents/Sparky/Sparky-core/Sparky-core/src/shaders/basic.frag");
    shader.enable();
    shader.setUniformMat4("pr_matrix", ortho);
    shader.setUniformMat4("ml_matrix", mat4::translation(vec3(4, 3, 0)));
    
    shader.setUniform2f("light_pos", vec2(4.0f, 1.5f));
    shader.setUniform4f("colour", vec4(0.2f, 0.3f, 0.8f, 1.0f));
    
    while (!window.closed())
    {
        window.clear();
        double x, y;
        window.getMousePosition(x, y);
        // Here is the triggering of the light, yo!
        shader.setUniform2f("light_pos", vec2((float)(x * 10.0f / 960.0f), (float)(9.0f - y * 9.0f / 540)));
#if 0
        glDrawArrays(GL_TRIANGLES, 0, 6);
#else
        sprite1.bind();
        ibo.bind();
        shader.setUniformMat4("ml_matrix", mat4::translation(vec3(4, 3, 0)));
        glDrawElements(GL_TRIANGLES, ibo.getCount(), GL_UNSIGNED_SHORT, 0);
        ibo.bind();
        sprite1.unbind();
        
        sprite2.bind();
        ibo.bind();
        shader.setUniformMat4("ml_matrix", mat4::translation(vec3(0, 0, 0)));
        glDrawElements(GL_TRIANGLES, ibo.getCount(), GL_UNSIGNED_SHORT, 0);
        ibo.bind();
        sprite2.unbind();
#endif
        window.update();
    }

    return 0;
}