forked from aya/aya
36 lines
842 B
Python
36 lines
842 B
Python
$input a_position, a_texcoord0, a_color0
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$output v_texcoord0, v_color0
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#include "common.sh"
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uniform vec4 u_color;
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uniform vec4 u_color2;
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SAMPLER2D(s_diffuseMap, 0);
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void SkyVS()
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{
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vec4 wpos = mul(u_worldMatrix, vec4(a_position, 1.0));
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gl_Position = mul(u_viewProjection, wpos);
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#ifndef GLSLES
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// snap to far plane to prevent scene-sky intersections
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// small offset is needed to prevent 0/0 division in case w=0, which causes rasterization issues
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// some mobile chips (hello, Vivante!) don't like it
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gl_Position.z = gl_Position.w - 1.0 / 16.0;
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#endif
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#if BGFX_SHADER_LANGUAGE_GLSL
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gl_PointSize = 2.0; // star size
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#endif
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v_texcoord0 = a_texcoord0;
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v_color0 = a_color0 * mix(u_color2, u_color, wpos.y / 1700.0);
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}
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void SkyPS()
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{
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gl_FragColor = texture2D(s_diffuseMap, v_texcoord0) * v_color0;
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}
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