Initial commit

src/main/resources/assets/shaders/Shape.fragment.glsl

@@ -0,0 +1,53 @@
+#version 120
+
+varying vec3 varyingColorMultiplier;
+varying vec2 varyingTextureCoords;
+varying vec3 varyingNormals;
+
+uniform sampler2D textureSlot;
+uniform vec2 textureStart;
+uniform vec2 textureSize;
+
+void applyTexture() {
+	gl_FragColor = texture2D(
+			textureSlot,
+			vec2(
+				varyingTextureCoords[0] * textureSize[0] + textureStart[0],
+				varyingTextureCoords[1] * textureSize[1] + textureStart[1]
+			)
+	);
+}
+
+void multiply(inout vec4 vector, float scalar) {
+	vector.x *= scalar;
+	vector.y *= scalar;
+	vector.z *= scalar;
+	vector.w *= scalar;
+}
+
+void linearMultiply(inout vec4 vector, vec4 scalars) {
+	vector.x *= scalars.x;
+	vector.y *= scalars.y;
+	vector.z *= scalars.z;
+	vector.w *= scalars.w;
+}
+
+void applyColorMultiplier() {
+	linearMultiply(gl_FragColor, vec4(varyingColorMultiplier, 1.0));
+}
+
+void applyShading() {
+	vec3 light = normalize(vec3(0.5, 1.0, 0.2));
+	vec3 normal = varyingNormals;
+
+	float angleCos = dot(normal, light);
+	float lightness = (angleCos + 1.5) / 2;
+
+	linearMultiply(gl_FragColor, vec4(lightness.xxx, 1.0));
+}
+
+void applyAlpha() {
+	if (gl_FragColor.w < 0.01) {
+		discard;
+	}
+}

src/main/resources/assets/shaders/Shape.vertex.glsl

@@ -0,0 +1,27 @@
+#version 120
+
+attribute vec3 inputPositions;
+
+attribute vec3 inputColorMultiplier;
+varying vec3 varyingColorMultiplier;
+
+attribute vec2 inputTextureCoords;
+varying vec2 varyingTextureCoords;
+
+attribute vec3 inputNormals;
+varying vec3 varyingNormals;
+
+uniform mat4 worldTransform;
+uniform mat4 finalTransform;
+
+vec4 applyFinalTransform(vec4 vector) {
+	return finalTransform * vector;
+}
+
+void transferToFragment() {
+	varyingColorMultiplier = inputColorMultiplier;
+	varyingTextureCoords = inputTextureCoords;
+	
+	mat3 worldRotation = mat3(worldTransform);
+	varyingNormals = normalize(worldRotation * inputNormals);
+}

src/main/resources/assets/shaders/WorldDefault.fragment.glsl

@@ -0,0 +1,8 @@
+#version 120
+
+void main(void) {
+	applyTexture();
+	applyColorMultiplier();
+	applyShading();
+	applyAlpha();
+}

src/main/resources/assets/shaders/WorldDefault.vertex.glsl

@@ -0,0 +1,6 @@
+#version 120
+
+void main(void) {
+	gl_Position = applyFinalTransform(vec4(inputPositions, 1.0));
+	transferToFragment();
+}