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[client] egl: provide the texture scale to the desktop shader

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If the texture has a post-processing filter that has scaled the texture,
the desktop fragment shader needs to know this if it's doing linear
scaling.
This commit is contained in:
Geoffrey McRae 2021-08-09 18:22:28 +10:00
parent f7f8060447
commit 6882e5c59f
4 changed files with 23 additions and 6 deletions
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7
client/renderers/EGL/desktop.c
View file

@ -43,6 +43,7 @@ struct DesktopShader
EGL_Shader * shader;
GLint uTransform;
GLint uDesktopSize;
GLint uTextureScale;
GLint uScaleAlgo;
GLint uNVGain;
GLint uCBMode;
@ -97,6 +98,7 @@ static bool egl_initDesktopShader(
shader->uTransform = egl_shaderGetUniform(shader->shader, "transform" );
shader->uDesktopSize = egl_shaderGetUniform(shader->shader, "size" );
shader->uTextureScale = egl_shaderGetUniform(shader->shader, "textureScale");
shader->uScaleAlgo = egl_shaderGetUniform(shader->shader, "scaleAlgo" );
shader->uNVGain = egl_shaderGetUniform(shader->shader, "nvGain" );
shader->uCBMode = egl_shaderGetUniform(shader->shader, "cbMode" );
@ -356,6 +358,11 @@ bool egl_desktopRender(EGL_Desktop * desktop, const float x, const float y,
.location = shader->uDesktopSize,
.f = { desktop->width, desktop->height },
},
{
.type = EGL_UNIFORM_TYPE_1F,
.location = shader->uTextureScale,
.f = { egl_textureGetScale(desktop->texture) },
},
{
.type = EGL_UNIFORM_TYPE_M3x2FV,
.location = shader->uTransform,

3
client/renderers/EGL/shader/desktop_rgb.frag
View file

@ -12,6 +12,7 @@ uniform sampler2D sampler1;
uniform int scaleAlgo;
uniform highp vec2 size;
uniform highp float textureScale;
uniform highp float nvGain;
uniform int cbMode;
@ -21,7 +22,7 @@ void main()
switch (scaleAlgo)
{
case EGL_SCALE_NEAREST:
color = texelFetch(sampler1, ivec2(uv * size), 0);
color = texelFetch(sampler1, ivec2(uv * size * textureScale), 0);
break;
case EGL_SCALE_LINEAR:

6
client/renderers/EGL/texture.c
View file

@ -339,6 +339,7 @@ enum EGL_TexStatus egl_textureAddShader(EGL_Texture * this, EGL_Shader * shader,
glGenTextures(1, &step->tex);
step->shader = shader;
step->scale = outputScale;
this->scale = outputScale;
if (this->formatValid)
if (!setupRenderStep(this, step))
@ -351,3 +352,8 @@ enum EGL_TexStatus egl_textureAddShader(EGL_Texture * this, EGL_Shader * shader,
ll_push(this->render, step);
return EGL_TEX_STATUS_OK;
}
float egl_textureGetScale(EGL_Texture * this)
{
return this->scale;
}

3
client/renderers/EGL/texture.h
View file

@ -144,6 +144,7 @@ struct EGL_Texture
_Atomic(bool) updated;
bool postProcessed;
EGL_Model * model;
float scale;
};
bool egl_textureInit(EGL * egl, EGL_Texture ** texture, EGLDisplay * display,
@ -168,3 +169,5 @@ enum EGL_TexStatus egl_textureBind(EGL_Texture * texture);
enum EGL_TexStatus egl_textureAddShader(EGL_Texture * texture,
EGL_Shader * shader, float outputScale);
float egl_textureGetScale(EGL_Texture * texture);