From c47313db65f968559711ac1b505ef341a9872017 Mon Sep 17 00:00:00 2001 From: Liso Date: Sun, 6 Jun 2021 18:51:21 +0200 Subject: Shadow mapping render pass (#11244) Co-authored-by: x2048 --- .../shadow_shaders/pass1_trans_fragment.glsl | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 client/shaders/shadow_shaders/pass1_trans_fragment.glsl (limited to 'client/shaders/shadow_shaders/pass1_trans_fragment.glsl') diff --git a/client/shaders/shadow_shaders/pass1_trans_fragment.glsl b/client/shaders/shadow_shaders/pass1_trans_fragment.glsl new file mode 100644 index 000000000..9f9e5be8c --- /dev/null +++ b/client/shaders/shadow_shaders/pass1_trans_fragment.glsl @@ -0,0 +1,38 @@ +uniform sampler2D ColorMapSampler; +varying vec4 tPos; + +#ifdef COLORED_SHADOWS +// c_precision of 128 fits within 7 base-10 digits +const float c_precision = 128.0; +const float c_precisionp1 = c_precision + 1.0; + +float packColor(vec3 color) +{ + return floor(color.b * c_precision + 0.5) + + floor(color.g * c_precision + 0.5) * c_precisionp1 + + floor(color.r * c_precision + 0.5) * c_precisionp1 * c_precisionp1; +} + +const vec3 black = vec3(0.0); +#endif + +void main() +{ + vec4 col = texture2D(ColorMapSampler, gl_TexCoord[0].st); +#ifndef COLORED_SHADOWS + if (col.a < 0.5) + discard; +#endif + + float depth = 0.5 + tPos.z * 0.5; + // ToDo: Liso: Apply movement on waving plants + // depth in [0, 1] for texture + + //col.rgb = col.a == 1.0 ? vec3(1.0) : col.rgb; +#ifdef COLORED_SHADOWS + float packedColor = packColor(mix(col.rgb, black, col.a)); + gl_FragColor = vec4(depth, packedColor, 0.0,1.0); +#else + gl_FragColor = vec4(depth, 0.0, 0.0, 1.0); +#endif +} -- cgit v1.2.3