From aa591c73c818d7f26caa15bc567929e2d404dcf2 Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Mon, 6 Dec 2021 05:39:15 +0500
Subject: Added optional forward rendering

---
 cwd/assets/altcraft/scripts/ui.lua             |  1 +
 cwd/assets/altcraft/shaders/frag/fwd_entity.fs | 11 +++++
 cwd/assets/altcraft/shaders/frag/fwd_face.fs   | 38 +++++++++++++++
 cwd/assets/altcraft/shaders/frag/fwd_sky.fs    | 65 ++++++++++++++++++++++++++
 cwd/assets/altcraft/ui/options.rml             |  6 +++
 5 files changed, 121 insertions(+)
 create mode 100644 cwd/assets/altcraft/shaders/frag/fwd_entity.fs
 create mode 100644 cwd/assets/altcraft/shaders/frag/fwd_face.fs
 create mode 100644 cwd/assets/altcraft/shaders/frag/fwd_sky.fs

(limited to 'cwd')

diff --git a/cwd/assets/altcraft/scripts/ui.lua b/cwd/assets/altcraft/scripts/ui.lua
index 938088f..bc04626 100644
--- a/cwd/assets/altcraft/scripts/ui.lua
+++ b/cwd/assets/altcraft/scripts/ui.lua
@@ -1,5 +1,6 @@
 local options = {
     gamma = 2.2,
+    deffered = false,
     flight = false,
     mouseSensetivity = 0.1,
     renderDistance = 2,
diff --git a/cwd/assets/altcraft/shaders/frag/fwd_entity.fs b/cwd/assets/altcraft/shaders/frag/fwd_entity.fs
new file mode 100644
index 0000000..094aaf2
--- /dev/null
+++ b/cwd/assets/altcraft/shaders/frag/fwd_entity.fs
@@ -0,0 +1,11 @@
+#version 330 core
+
+in vec4 entityWorldPos;
+
+out vec4 fragColor;
+
+uniform vec3 entityColor;
+
+void main() {
+    fragColor = vec4(entityColor, 1.0f);
+}
diff --git a/cwd/assets/altcraft/shaders/frag/fwd_face.fs b/cwd/assets/altcraft/shaders/frag/fwd_face.fs
new file mode 100644
index 0000000..deb8341
--- /dev/null
+++ b/cwd/assets/altcraft/shaders/frag/fwd_face.fs
@@ -0,0 +1,38 @@
+#version 330 core
+
+in vec4 faceWorldPos;
+in vec3 faceTextureUv;
+in vec3 faceAddColor;
+in vec3 faceNormal;
+in vec2 faceLight;
+
+out vec4 fragColor;
+
+uniform sampler2DArray textureAtlas;
+
+layout (std140) uniform Globals {
+    mat4 projView;
+    mat4 proj;
+    mat4 view;
+    uvec2 viewportSize;
+    vec4 ssaoKernels[64];
+    float globalTime;
+    float dayTime;
+    float gamma;
+};
+
+void main() {
+    vec4 col = texture(textureAtlas, faceTextureUv);
+    if (col.a < 0.3f)
+        discard;
+
+    float localLight = faceLight.r / 15.0f;
+    float skyLight = faceLight.g / 15.0f;
+    float lightLevel = clamp(localLight + skyLight * dayTime, 0.01f, 1.0f);
+    lightLevel = pow(lightLevel, 3);
+    lightLevel = clamp(lightLevel, 0.005f, 1.0f);
+
+    fragColor = vec4(col.rgb * faceAddColor.rgb * lightLevel, 1.0f);
+
+    fragColor.rgb = pow(fragColor.rgb, vec3(1.0f / gamma));
+}
diff --git a/cwd/assets/altcraft/shaders/frag/fwd_sky.fs b/cwd/assets/altcraft/shaders/frag/fwd_sky.fs
new file mode 100644
index 0000000..b6185fd
--- /dev/null
+++ b/cwd/assets/altcraft/shaders/frag/fwd_sky.fs
@@ -0,0 +1,65 @@
+#version 330 core
+
+in vec3 facePos;
+
+out vec4 fragColor;
+
+layout (std140) uniform Globals {
+    mat4 projView;
+    mat4 proj;
+    mat4 view;
+    uvec2 viewportSize;
+    vec4 ssaoKernels[64];
+    float globalTime;
+    float dayTime;
+    float gamma;
+};
+
+uniform sampler2DArray textureAtlas;
+uniform vec4 sunTexture;
+uniform float sunTextureLayer;
+uniform vec4 moonTexture;
+uniform float moonTextureLayer;
+
+const vec4 DaySkyColor = vec4(0.21, 0.4, 1, 1);
+
+const vec3 SunPos = vec3(0, 0.1, 0.5);
+
+const vec3 MoonPos = vec3(0, 0.1, -0.5);
+
+const vec4 NightSkyColor = vec4(0.0, 0.0008, 0.002, 1.0);
+
+vec3 TransformTextureCoord(vec4 TextureAtlasCoords, vec2 UvCoords, float Layer) {
+    float x = TextureAtlasCoords.x;
+    float y = TextureAtlasCoords.y;
+    float w = TextureAtlasCoords.z;
+    float h = TextureAtlasCoords.w;
+    vec2 A = vec2(x, 1 - y - h);
+    vec2 B = vec2(x + w, 1 - y);
+    vec2 transformed = A + UvCoords * (B - A);
+    return vec3(transformed.x, transformed.y, Layer);
+}
+
+vec4 Sun() {
+    vec3 sunDelta = (facePos - SunPos) * 3.0f;
+    float distanceToSun = length(sunDelta);
+    vec4 sunColor = texture(textureAtlas, TransformTextureCoord(sunTexture, (vec2(sunDelta.xy) + 0.5f), sunTextureLayer));
+    vec4 sun = mix(vec4(0, 0, 0, 1), sunColor, clamp(1 - distanceToSun * 2.0f, 0, 1));
+    return sun;
+}
+
+vec4 Moon() {
+    vec3 moonDelta = (facePos - MoonPos) * 4.5f;
+    float distanceToMoon = length(moonDelta);
+    vec4 moonColor = texture(textureAtlas, TransformTextureCoord(moonTexture, (vec2(moonDelta.xy) + 0.5f), moonTextureLayer));
+    vec4 moon = mix(vec4(0, 0, 0, 1),moonColor, clamp(1 - distanceToMoon * 2.0f, 0, 1));
+    return moon;
+}
+
+void main() {
+    fragColor = vec4(mix(NightSkyColor, DaySkyColor, dayTime).rgb, 1.0f);
+    fragColor += vec4(Sun().rgb, 1.0f);
+    fragColor += vec4(Moon().rgb, 1.0f);
+
+    fragColor.rgb = pow(fragColor.rgb, vec3(1.0f / gamma));
+}
diff --git a/cwd/assets/altcraft/ui/options.rml b/cwd/assets/altcraft/ui/options.rml
index 9aa4624..ea7c39e 100644
--- a/cwd/assets/altcraft/ui/options.rml
+++ b/cwd/assets/altcraft/ui/options.rml
@@ -13,6 +13,12 @@
                 <span id="gamma-val"></span>
             </div>
 
+            <div class="option">
+                <label>Deffered shading</label>
+                <input type="checkbox" id="deffered" />
+                <span id="deffered-val"></span>
+            </div>
+
             <div class="option">
                 <label>Flight</label>
                 <input type="checkbox" id="flight" />
-- 
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