more shader things that needs multiplatform investigation

src/net/torvald/terrarum/MacosGL32Shaders.kt

@@ -8,121 +8,11 @@ import com.badlogic.gdx.graphics.glutils.ShaderProgram
  */
 object MacosGL32Shaders {
     fun createSpriteBatchShader(): ShaderProgram {
-        val vertexShader = """
-#version 150
-in vec4 ${ShaderProgram.POSITION_ATTRIBUTE};
-in vec4 ${ShaderProgram.COLOR_ATTRIBUTE};
-in vec2 ${ShaderProgram.TEXCOORD_ATTRIBUTE}0;
-uniform mat4 u_projTrans;
-out vec4 v_color;
-out vec2 v_texCoords;
-
-void main() {
-    v_color = ${ShaderProgram.COLOR_ATTRIBUTE};
-    v_color.a = v_color.a * (255.0/254.0);
-    v_texCoords = ${ShaderProgram.TEXCOORD_ATTRIBUTE}0;
-    gl_Position =  u_projTrans * ${ShaderProgram.POSITION_ATTRIBUTE};
-}
-"""
-        val fragmentShader = """
-#version 150
-#ifdef GL_ES
-#define LOWP lowp
-precision mediump float;
-#else
-#define LOWP 
-#endif
-in LOWP vec4 v_color;
-in vec2 v_texCoords;
-uniform sampler2D u_texture;
-out vec4 fragColor;
-
-void main() {
-    fragColor = v_color * texture(u_texture, v_texCoords);
-}
-"""
-        return App.loadShaderInline(vertexShader, fragmentShader)
+        return App.loadShaderFromClasspath("shaders/gl32spritebatch.vert", "shaders/gl32spritebatch.frag")
     }
 
-
     fun createShapeRendererShader(): ShaderProgram {
-        return App.loadShaderInline(createShadeRendererVertexShader(), createShapeRendererFragmentShader())
-    }
-
-
-    private fun createShadeRendererVertexShader(hasNormals: Boolean = false, hasColors: Boolean = true, numTexCoords: Int = 0): String {
-        var shader = ("""
-    #version 150
-    in vec4 ${ShaderProgram.POSITION_ATTRIBUTE};
-    
-    """.trimIndent()
-                + (if (hasNormals) """
-     in vec3 ${ShaderProgram.NORMAL_ATTRIBUTE};
-     
-     """.trimIndent()
-        else "")
-                + if (hasColors) """
-     in vec4 ${ShaderProgram.COLOR_ATTRIBUTE};
-     
-     """.trimIndent()
-        else "")
-        for (i in 0 until numTexCoords) {
-            shader += """
-            in vec2 ${ShaderProgram.TEXCOORD_ATTRIBUTE}$i;
-            
-            """.trimIndent()
-        }
-        shader += """
-            uniform mat4 u_projModelView;
-            ${if (hasColors) "in vec4 v_col;\n" else ""}
-            """.trimIndent()
-        for (i in 0 until numTexCoords) {
-            shader += "in vec2 v_tex$i;\n"
-        }
-        shader += """void main() {
-   gl_Position = u_projModelView * ${ShaderProgram.POSITION_ATTRIBUTE};
-"""
-        if (hasColors) {
-            shader += """   v_col = ${ShaderProgram.COLOR_ATTRIBUTE};
-   v_col.a *= 255.0 / 254.0;
-"""
-        }
-        for (i in 0 until numTexCoords) {
-            shader += """   v_tex$i = ${ShaderProgram.TEXCOORD_ATTRIBUTE}$i;
-"""
-        }
-        shader += """   gl_PointSize = 1.0;
-}
-"""
-        return shader
-    }
-
-    private fun createShapeRendererFragmentShader(hasNormals: Boolean = false, hasColors: Boolean = true, numTexCoords: Int = 0): String {
-        var shader = """
-            #version 150
-            #ifdef GL_ES
-            precision mediump float;
-            #endif
-            
-            """.trimIndent()
-        if (hasColors) shader += "in vec4 v_col;\n"
-        for (i in 0 until numTexCoords) {
-            shader += "in vec2 v_tex$i;\n"
-            shader += "uniform sampler2D u_sampler$i;\n"
-        }
-        shader += """void main() {
-   gl_FragColor = ${if (hasColors) "v_col" else "vec4(1, 1, 1, 1)"}"""
-        if (numTexCoords > 0) shader += " * "
-        for (i in 0 until numTexCoords) {
-            shader += if (i == numTexCoords - 1) {
-                " texture2D(u_sampler$i,  v_tex$i)"
-            }
-            else {
-                " texture2D(u_sampler$i,  v_tex$i) *"
-            }
-        }
-        shader += ";\n}"
-        return shader
+        return App.loadShaderFromClasspath("shaders/gl32shaperenderer.vert", "shaders/gl32shaperenderer.frag")
     }
     
 }

src/shaders/gl32shaperenderer.frag

@@ -0,0 +1,13 @@
+#version 150
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+in vec4 v_col;
+
+out vec4 fragColor;
+
+void main() {
+    fragColor = v_col;
+}

src/shaders/gl32shaperenderer.vert

@@ -0,0 +1,14 @@
+#version 150
+
+in vec4 a_position;
+in vec4 a_color;
+
+uniform mat4 u_projModelView;
+out vec4 v_col;
+
+void main() {
+    gl_Position = u_projModelView * a_position;
+    v_col = a_color;
+    v_col.a *= 255.0 / 254.0;
+    gl_PointSize = 1.0;
+}

src/shaders/gl32spritebatch.frag

@@ -0,0 +1,17 @@
+#version 150
+
+#ifdef GL_ES
+#define LOWP lowp
+precision mediump float;
+#else
+#define LOWP
+#endif
+
+in LOWP vec4 v_color;
+in vec2 v_texCoords;
+uniform sampler2D u_texture;
+out vec4 fragColor;
+
+void main() {
+    fragColor = v_color * texture(u_texture, v_texCoords);
+}

src/shaders/gl32spritebatch.vert

@@ -0,0 +1,15 @@
+#version 150
+
+in vec4 a_position;
+in vec4 a_color;
+in vec2 a_texCoord0;
+uniform mat4 u_projTrans;
+out vec4 v_color;
+out vec2 v_texCoords;
+
+void main() {
+    v_color = a_color;
+    v_color.a = v_color.a * (255.0/254.0);
+    v_texCoords = a_texCoord0;
+    gl_Position =  u_projTrans * a_position;
+}