mirror of https://github.com/OpenRCT2/OpenRCT2.git
57 lines
1.5 KiB
GLSL
57 lines
1.5 KiB
GLSL
#version 150
|
|
|
|
// Allows for about 8 million draws per frame
|
|
const float DEPTH_INCREMENT = 1.0 / float(1u << 22u);
|
|
|
|
uniform ivec2 uScreenSize;
|
|
|
|
// clang-format off
|
|
in ivec4 vClip;
|
|
in int vTexColourAtlas;
|
|
in vec4 vTexColourBounds;
|
|
in int vTexMaskAtlas;
|
|
in vec4 vTexMaskBounds;
|
|
in ivec3 vPalettes;
|
|
in int vFlags;
|
|
in uint vColour;
|
|
in ivec4 vBounds;
|
|
in int vDepth;
|
|
|
|
in mat4x2 vVertMat;
|
|
in vec2 vVertVec;
|
|
|
|
out vec2 fPosition;
|
|
out vec3 fPeelPos;
|
|
flat out int fFlags;
|
|
flat out uint fColour;
|
|
out vec3 fTexColour;
|
|
out vec3 fTexMask;
|
|
flat out vec3 fPalettes;
|
|
// clang-format on
|
|
|
|
void main()
|
|
{
|
|
// Clamp position by vClip, correcting interpolated values for the clipping
|
|
vec2 m = clamp(
|
|
((vVertMat * vec4(vClip)) - (vVertMat * vec4(vBounds))) / vec2(vBounds.zw - vBounds.xy) + vVertVec, 0.0, 1.0);
|
|
vec2 pos = mix(vec2(vBounds.xy), vec2(vBounds.zw), m);
|
|
fTexColour = vec3(mix(vTexColourBounds.xy, vTexColourBounds.zw, m), vTexColourAtlas);
|
|
fTexMask = vec3(mix(vTexMaskBounds.xy, vTexMaskBounds.zw, m), vTexMaskAtlas);
|
|
|
|
fPosition = pos;
|
|
|
|
// Transform screen coordinates to texture coordinates
|
|
float depth = 1.0 - (float(vDepth) + 1.0) * DEPTH_INCREMENT;
|
|
pos = pos / vec2(uScreenSize);
|
|
pos.y = pos.y * -1.0 + 1.0;
|
|
fPeelPos = vec3(pos, depth * 0.5 + 0.5);
|
|
|
|
fFlags = vFlags;
|
|
fColour = vColour;
|
|
fPalettes = vec3(vPalettes);
|
|
|
|
// Transform texture coordinates to viewport coordinates
|
|
pos = pos * 2.0 - 1.0;
|
|
gl_Position = vec4(pos, depth, 1.0);
|
|
}
|