1er commit

src/render/shaders/WorldShader.cpp

@@ -0,0 +1,73 @@
+/*
+ * WorldShader.cpp
+ *
+ *  Created on: 4 nov. 2020
+ *      Author: simon
+ */
+
+#include "render/shaders/WorldShader.h"
+
+static const char vertexSource[] = R"(
+#version 330
+
+layout(location = 0) in vec2 position;
+layout(location = 1) in int color;
+
+uniform vec2 camPos = vec2(0, 0);
+uniform float zoom = 1;
+uniform float aspectRatio = 0;
+uniform float isometricView;
+
+flat out int pass_color;
+
+void main(void){
+    float x = (position.x - camPos.x + (position.y - camPos.y) * isometricView) / aspectRatio * zoom;
+    float y = ((-0.5 * (position.x - camPos.x) + 0.5 * (position.y - camPos.y)) * isometricView + (position.y - camPos.y) * (1 - isometricView)) * zoom;
+	pass_color = color;
+	gl_Position = vec4(x, -y, 0.0, 1.0);
+}
+)";
+
+static const char fragmentSource[] = R"(
+#version 330
+
+flat in int pass_color;
+
+out vec4 out_color;
+
+void main(void){
+
+    float r = float(pass_color >> 24 & 0xFF) / 255.0;
+    float g = float(pass_color >> 16 & 0xFF) / 255.0;
+    float b = float(pass_color >> 8 & 0xFF) / 255.0;
+    float a = float(pass_color & 0xFF) / 255.0; 
+	out_color = vec4(r, g, b, a);
+
+}
+)";
+
+WorldShader::WorldShader(): ShaderProgram(){}
+
+void WorldShader::loadShader(){
+    ShaderProgram::loadProgram(vertexSource, fragmentSource);
+}
+
+void WorldShader::getAllUniformLocation(){
+    location_aspect_ratio = getUniformLocation("aspectRatio");
+    location_zoom = getUniformLocation("zoom");
+    location_cam = getUniformLocation("camPos");
+    location_viewtype = getUniformLocation("isometricView");
+}
+
+void WorldShader::setCamPos(const glm::vec2& camPos){
+    loadVector(location_cam, camPos);
+}
+void WorldShader::setZoom(float zoom){
+    loadFloat(location_zoom, zoom);
+}
+void WorldShader::setAspectRatio(float aspectRatio){
+    loadFloat(location_aspect_ratio, aspectRatio);
+}
+void WorldShader::setIsometricView(float isometric){
+    loadFloat(location_viewtype, isometric);
+}