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authorRealBadAngel <maciej.kasatkin@o2.pl>2015-07-21 23:56:41 +0200
committerRealBadAngel <maciej.kasatkin@o2.pl>2015-07-21 23:56:41 +0200
commit60350699c792b816b20704d59cfbda0894cdba39 (patch)
tree59e9a369d9ea87804035ee27ea902a81b4f90060 /client/shaders
parent5b0c719171eb9ccb8f2829eb1cc8b3fe9f24cd05 (diff)
downloadminetest-60350699c792b816b20704d59cfbda0894cdba39.tar.gz
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Add wielded (and CAOs) shader
Diffstat (limited to 'client/shaders')
-rw-r--r--client/shaders/wielded_shader/opengl_fragment.glsl114
-rw-r--r--client/shaders/wielded_shader/opengl_vertex.glsl35
2 files changed, 149 insertions, 0 deletions
diff --git a/client/shaders/wielded_shader/opengl_fragment.glsl b/client/shaders/wielded_shader/opengl_fragment.glsl
new file mode 100644
index 000000000..75dd1b674
--- /dev/null
+++ b/client/shaders/wielded_shader/opengl_fragment.glsl
@@ -0,0 +1,114 @@
+uniform sampler2D baseTexture;
+uniform sampler2D normalTexture;
+uniform sampler2D textureFlags;
+
+uniform vec4 skyBgColor;
+uniform float fogDistance;
+uniform vec3 eyePosition;
+
+varying vec3 vPosition;
+varying vec3 worldPosition;
+
+varying vec3 eyeVec;
+varying vec3 lightVec;
+
+bool normalTexturePresent = false;
+bool texTileableHorizontal = false;
+bool texTileableVertical = false;
+bool texSeamless = false;
+
+const float e = 2.718281828459;
+const float BS = 10.0;
+
+void get_texture_flags()
+{
+ vec4 flags = texture2D(textureFlags, vec2(0.0, 0.0));
+ if (flags.r > 0.5) {
+ normalTexturePresent = true;
+ }
+ if (flags.g > 0.5) {
+ texTileableHorizontal = true;
+ }
+ if (flags.b > 0.5) {
+ texTileableVertical = true;
+ }
+ if (texTileableHorizontal && texTileableVertical) {
+ texSeamless = true;
+ }
+}
+
+float intensity(vec3 color)
+{
+ return (color.r + color.g + color.b) / 3.0;
+}
+
+float get_rgb_height(vec2 uv)
+{
+ if (texSeamless) {
+ return intensity(texture2D(baseTexture, uv).rgb);
+ } else {
+ return intensity(texture2D(baseTexture, clamp(uv, 0.0, 0.999)).rgb);
+ }
+}
+
+vec4 get_normal_map(vec2 uv)
+{
+ vec4 bump = texture2D(normalTexture, uv).rgba;
+ bump.xyz = normalize(bump.xyz * 2.0 - 1.0);
+ return bump;
+}
+
+void main(void)
+{
+ vec3 color;
+ vec4 bump;
+ vec2 uv = gl_TexCoord[0].st;
+ bool use_normalmap = false;
+ get_texture_flags();
+
+#if USE_NORMALMAPS == 1
+ if (normalTexturePresent) {
+ bump = get_normal_map(uv);
+ use_normalmap = true;
+ }
+#endif
+
+ if (GENERATE_NORMALMAPS == 1 && normalTexturePresent == false) {
+ float tl = get_rgb_height(vec2(uv.x - SAMPLE_STEP, uv.y + SAMPLE_STEP));
+ float t = get_rgb_height(vec2(uv.x - SAMPLE_STEP, uv.y - SAMPLE_STEP));
+ float tr = get_rgb_height(vec2(uv.x + SAMPLE_STEP, uv.y + SAMPLE_STEP));
+ float r = get_rgb_height(vec2(uv.x + SAMPLE_STEP, uv.y));
+ float br = get_rgb_height(vec2(uv.x + SAMPLE_STEP, uv.y - SAMPLE_STEP));
+ float b = get_rgb_height(vec2(uv.x, uv.y - SAMPLE_STEP));
+ float bl = get_rgb_height(vec2(uv.x -SAMPLE_STEP, uv.y - SAMPLE_STEP));
+ float l = get_rgb_height(vec2(uv.x - SAMPLE_STEP, uv.y));
+ float dX = (tr + 2.0 * r + br) - (tl + 2.0 * l + bl);
+ float dY = (bl + 2.0 * b + br) - (tl + 2.0 * t + tr);
+ bump = vec4(normalize(vec3 (dX, dY, NORMALMAPS_STRENGTH)), 1.0);
+ use_normalmap = true;
+ }
+
+ vec4 base = texture2D(baseTexture, uv).rgba;
+
+#ifdef ENABLE_BUMPMAPPING
+ if (use_normalmap) {
+ vec3 L = normalize(lightVec);
+ vec3 E = normalize(eyeVec);
+ float specular = pow(clamp(dot(reflect(L, bump.xyz), E), 0.0, 1.0), 1.0);
+ float diffuse = dot(-E,bump.xyz);
+ color = (diffuse + 0.1 * specular) * base.rgb;
+ } else {
+ color = base.rgb;
+ }
+#else
+ color = base.rgb;
+#endif
+
+ vec4 col = vec4(color.rgb, base.a);
+ col *= gl_Color;
+ 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.rgb, base.a);
+}
diff --git a/client/shaders/wielded_shader/opengl_vertex.glsl b/client/shaders/wielded_shader/opengl_vertex.glsl
new file mode 100644
index 000000000..a2ab9fa5f
--- /dev/null
+++ b/client/shaders/wielded_shader/opengl_vertex.glsl
@@ -0,0 +1,35 @@
+uniform mat4 mWorldViewProj;
+uniform mat4 mInvWorld;
+uniform mat4 mTransWorld;
+uniform mat4 mWorld;
+
+uniform float dayNightRatio;
+uniform vec3 eyePosition;
+uniform float animationTimer;
+
+varying vec3 vPosition;
+varying vec3 worldPosition;
+
+varying vec3 eyeVec;
+varying vec3 lightVec;
+varying vec3 tsEyeVec;
+varying vec3 tsLightVec;
+
+const float e = 2.718281828459;
+const float BS = 10.0;
+
+void main(void)
+{
+ gl_TexCoord[0] = gl_MultiTexCoord0;
+ gl_Position = mWorldViewProj * gl_Vertex;
+
+ vPosition = gl_Position.xyz;
+ worldPosition = (mWorld * gl_Vertex).xyz;
+
+ vec3 sunPosition = vec3 (0.0, eyePosition.y * BS + 900.0, 0.0);
+
+ lightVec = sunPosition - worldPosition;
+ eyeVec = -(gl_ModelViewMatrix * gl_Vertex).xyz;
+
+ gl_FrontColor = gl_BackColor = gl_Color;
+}