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[client] egl: keep the mouse cursor 1:1 when downscaling

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This keeps the cursor a usable size when the guest is running a high
resolution and downscaling (ie, 4K -> FHD).
This commit is contained in:
Geoffrey McRae
2021-10-22 23:19:56 +11:00
parent 74444f8eed
commit d69069fb09
8 changed files with 137 additions and 52 deletions
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20
client/renderers/EGL/shader/cursor_rgb.frag
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@@ -3,16 +3,26 @@ precision mediump float;
#include "color_blind.h"
in vec2 uv;
out vec4 color;
in vec2 uv;
out vec4 color;
uniform sampler2D sampler1;
uniform int cbMode;
uniform float scale;
uniform int cbMode;
void main()
{
color = texture(sampler1, uv);
if (scale > 1.0)
{
vec2 ts = vec2(textureSize(sampler1, 0));
vec2 px = (uv - (0.5 / ts)) * ts;
if (px.x < 0.0 || px.y < 0.0)
discard;
color = texelFetch(sampler1, ivec2(px), 0);
}
else
color = texture(sampler1, uv);
if (cbMode > 0)
color = cbTransform(color, cbMode);