From 27373919f4369c0c511f9f0ac66854b7f76e101d Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Sat, 1 Dec 2012 03:02:16 +0200
Subject: Implement a global shader parameter passing system and useful shaders

---
 client/shaders/test_shader_1/base.txt             |  1 +
 client/shaders/test_shader_1/opengl_fragment.glsl | 25 +++++++++++++++++++++++
 client/shaders/test_shader_1/opengl_vertex.glsl   | 25 +++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 client/shaders/test_shader_1/base.txt
 create mode 100644 client/shaders/test_shader_1/opengl_fragment.glsl
 create mode 100644 client/shaders/test_shader_1/opengl_vertex.glsl

(limited to 'client/shaders/test_shader_1')

diff --git a/client/shaders/test_shader_1/base.txt b/client/shaders/test_shader_1/base.txt
new file mode 100644
index 000000000..080df30dd
--- /dev/null
+++ b/client/shaders/test_shader_1/base.txt
@@ -0,0 +1 @@
+trans_alphach_ref
diff --git a/client/shaders/test_shader_1/opengl_fragment.glsl b/client/shaders/test_shader_1/opengl_fragment.glsl
new file mode 100644
index 000000000..ebf943ced
--- /dev/null
+++ b/client/shaders/test_shader_1/opengl_fragment.glsl
@@ -0,0 +1,25 @@
+
+uniform sampler2D myTexture;
+uniform vec4 skyBgColor;
+uniform float fogDistance;
+
+varying vec3 vPosition;
+
+void main (void)
+{
+    //vec4 col = vec4(1.0, 0.0, 0.0, 1.0);
+    vec4 col = texture2D(myTexture, vec2(gl_TexCoord[0]));
+	float a = col.a;
+    col *= gl_Color;
+	col = col * col; // SRGB -> Linear
+	col *= 1.8;
+	col.r = 1.0 - exp(1.0 - col.r) / exp(1.0);
+	col.g = 1.0 - exp(1.0 - col.g) / exp(1.0);
+	col.b = 1.0 - exp(1.0 - col.b) / exp(1.0);
+	col = sqrt(col); // Linear -> SRGB
+	if(fogDistance != 0.0){
+		float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
+		col = mix(col, skyBgColor, d);
+	}
+    gl_FragColor = vec4(col.r, col.g, col.b, a);
+}
diff --git a/client/shaders/test_shader_1/opengl_vertex.glsl b/client/shaders/test_shader_1/opengl_vertex.glsl
new file mode 100644
index 000000000..498085053
--- /dev/null
+++ b/client/shaders/test_shader_1/opengl_vertex.glsl
@@ -0,0 +1,25 @@
+
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+
+varying vec3 vPosition;
+
+void main(void)
+{
+	gl_Position = mWorldViewProj * gl_Vertex;
+
+	vPosition = (mWorldViewProj * gl_Vertex).xyz;
+
+	if(gl_Normal.y > 0.5)
+		gl_FrontColor = gl_BackColor = gl_Color;
+	else
+		gl_FrontColor = gl_BackColor = gl_Color * 0.7;
+
+	/*if(gl_Normal.y > 0.5)
+		gl_FrontColor = gl_BackColor = vec4(1.0, 1.0, 1.0, 1.0);
+	else
+		gl_FrontColor = gl_BackColor = vec4(1.0, 1.0, 1.0, 1.0) * 0.7;*/
+
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+}
-- 
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