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#line 2
/*
* Copyright (c) 2024 lax1dude. All Rights Reserved.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
precision lowp int;
precision mediump float;
precision mediump sampler2D;
in vec4 v_position4f;
in vec2 v_texCoord2f;
in vec4 v_color4f;
in vec2 v_lightmap2f;
layout(location = 0) out vec4 output4f;
uniform sampler2D u_inputTexture;
uniform sampler2D u_lightmapTexture;
uniform mat4 u_inverseViewMatrix4f;
layout(std140) uniform u_chunkLightingData {
mediump int u_dynamicLightCount1i;
mediump int _paddingA_;
mediump int _paddingB_;
mediump int _paddingC_;
mediump vec4 u_dynamicLightArray[12];
};
void main() {
vec4 color = texture(u_inputTexture, v_texCoord2f) * v_color4f;
if(color.a < 0.004) {
discard;
}
vec4 light;
float blockLight = v_lightmap2f.x;
float diffuse = 0.0;
float len;
if(u_dynamicLightCount1i > 0) {
vec4 worldPosition4f = u_inverseViewMatrix4f * v_position4f;
worldPosition4f.xyz /= worldPosition4f.w;
vec3 normalVector3f = normalize(u_inverseViewMatrix4f[2].xyz);
int safeLightCount = u_dynamicLightCount1i > 12 ? 0 : u_dynamicLightCount1i;
for(int i = 0; i < safeLightCount; ++i) {
light = u_dynamicLightArray[i];
light.xyz = light.xyz - worldPosition4f.xyz;
len = length(light.xyz);
diffuse += max(dot(light.xyz / len, normalVector3f) * 0.8 + 0.2, 0.0) * max(light.w - len, 0.0);
}
blockLight = min(blockLight + diffuse * 0.066667, 1.0);
}
color *= texture(u_lightmapTexture, vec2(blockLight, v_lightmap2f.y));
output4f = color;
}
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