38 lines
1.3 KiB
GLSL
38 lines
1.3 KiB
GLSL
#version 310 es
|
|
#extension GL_EXT_tessellation_shader : require
|
|
layout(quads, cw, fractional_even_spacing) in;
|
|
|
|
layout(binding = 1, std140) uniform UBO
|
|
{
|
|
mat4 uMVP;
|
|
vec4 uScale;
|
|
vec2 uInvScale;
|
|
vec3 uCamPos;
|
|
vec2 uPatchSize;
|
|
vec2 uInvHeightmapSize;
|
|
} _31;
|
|
|
|
layout(binding = 0) uniform mediump sampler2D uHeightmapDisplacement;
|
|
|
|
layout(location = 0) patch in vec2 vOutPatchPosBase;
|
|
layout(location = 1) patch in vec4 vPatchLods;
|
|
layout(location = 1) out vec4 vGradNormalTex;
|
|
layout(location = 0) out vec3 vWorld;
|
|
|
|
void main()
|
|
{
|
|
vec2 _201 = vOutPatchPosBase + (gl_TessCoord.xy * _31.uPatchSize);
|
|
vec2 _214 = mix(vPatchLods.yx, vPatchLods.zw, vec2(gl_TessCoord.xy.x));
|
|
float _221 = mix(_214.x, _214.y, gl_TessCoord.xy.y);
|
|
mediump float _223 = floor(_221);
|
|
mediump float _226 = _221 - _223;
|
|
vec2 _125 = _201 * _31.uInvHeightmapSize;
|
|
vec2 _141 = _31.uInvHeightmapSize * exp2(_223);
|
|
vGradNormalTex = vec4(_125 + (_31.uInvHeightmapSize * 0.5), _125 * _31.uScale.zw);
|
|
mediump vec3 _253 = mix(textureLod(uHeightmapDisplacement, _125 + (_141 * 0.5), _223).xyz, textureLod(uHeightmapDisplacement, _125 + (_141 * 1.0), _223 + 1.0).xyz, vec3(_226));
|
|
vec2 _171 = (_201 * _31.uScale.xy) + _253.yz;
|
|
vWorld = vec3(_171.x, _253.x, _171.y);
|
|
gl_Position = _31.uMVP * vec4(vWorld, 1.0);
|
|
}
|
|
|