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Move scanlines computations in main shader. This reduces GPU memory consumption, may improve performace and increases scanlines quality.

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This commit is contained in:
Filippo Scognamiglio
2014-12-14 10:31:38 +01:00
parent 2876076cea
commit c9f918784c
2 changed files with 77 additions and 52 deletions
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29
app/qml/ShaderTerminal.qml
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@@ -23,7 +23,6 @@ import QtGraphicalEffects 1.0
ShaderEffect {
property ShaderEffectSource source
property ShaderEffectSource rasterizationSource
property ShaderEffectSource bloomSource
property color font_color: appSettings.font_color
@@ -54,6 +53,10 @@ ShaderEffect {
property real screen_brightness: appSettings.brightness * 1.5 + 0.5
property real dispX
property real dispY
property size virtual_resolution
TimeManager{
id: timeManager
enableTimer: terminalWindow.visible
@@ -144,8 +147,11 @@ ShaderEffect {
uniform highp vec4 font_color;
uniform highp vec4 background_color;
uniform highp sampler2D rasterizationSource;
uniform lowp float screen_brightness;" +
uniform lowp float screen_brightness;
uniform highp vec2 virtual_resolution;
uniform highp float dispX;
uniform highp float dispY;" +
(bloom_strength !== 0 ? "
uniform highp sampler2D bloomSource;
@@ -183,7 +189,18 @@ ShaderEffect {
return fract(smoothstep(-0.2, 0.0, coords.y - 3.0 * fract(time * 0.0001))) * glowing_line_strength;
}" : "") +
"float rgb2grey(vec3 v){
"highp float getScanlineIntensity(vec2 coords) {
highp float result = 1.0;" +
(appSettings.rasterization != appSettings.no_rasterization ?
"result *= abs(sin(coords.y * virtual_resolution.y * "+Math.PI+"));" : "") +
(appSettings.rasterization == appSettings.pixel_rasterization ?
"result *= abs(sin(coords.x * virtual_resolution.x * "+Math.PI+"));" : "") + "
return result;
}
float rgb2grey(vec3 v){
return dot(v, vec3(0.21, 0.72, 0.04));
}" +
@@ -256,7 +273,9 @@ ShaderEffect {
:
"vec3 finalColor = mix(background_color.rgb, font_color.rgb, greyscale_color);") +
"finalColor *= texture2D(rasterizationSource, coords).a;" +
"finalColor *= getScanlineIntensity(coords);
finalColor *= smoothstep(-dispX, 0.0, coords.x) - smoothstep(1.0, 1.0 + dispX, coords.x);
finalColor *= smoothstep(-dispY, 0.0, coords.y) - smoothstep(1.0, 1.0 + dispY, coords.y);" +
(bloom_strength !== 0 ?
"vec4 bloomFullColor = texture2D(bloomSource, coords);