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[client] egl: implement pixel perfect upscaling

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This commit is contained in:
Geoffrey McRae 2019-04-19 11:23:51 +10:00
parent 6f77ba8aea
commit ba50fbdc3e
6 changed files with 51 additions and 17 deletions
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2
VERSION
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@ -1 +1 @@
a12-157-g972ff93e6c+1
a12-158-g6f77ba8aea+1

17
client/renderers/EGL/desktop.c
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@ -47,6 +47,8 @@ struct EGL_Desktop
// uniforms
GLint uDesktopPos;
GLint uDesktopSize;
GLint uNearest;
GLint uNV, uNVGain;
// internals
@ -200,9 +202,11 @@ bool egl_desktop_perform_update(EGL_Desktop * desktop, const bool sourceChanged)
{
if (desktop->shader)
{
desktop->uDesktopPos = egl_shader_get_uniform_location(desktop->shader, "position");
desktop->uNV = egl_shader_get_uniform_location(desktop->shader, "nv" );
desktop->uNVGain = egl_shader_get_uniform_location(desktop->shader, "nvGain" );
desktop->uDesktopPos = egl_shader_get_uniform_location(desktop->shader, "position");
desktop->uDesktopSize = egl_shader_get_uniform_location(desktop->shader, "size" );
desktop->uNearest = egl_shader_get_uniform_location(desktop->shader, "nearest" );
desktop->uNV = egl_shader_get_uniform_location(desktop->shader, "nv" );
desktop->uNVGain = egl_shader_get_uniform_location(desktop->shader, "nvGain" );
}
if (!egl_texture_setup(
@ -232,13 +236,16 @@ bool egl_desktop_perform_update(EGL_Desktop * desktop, const bool sourceChanged)
return true;
}
void egl_desktop_render(EGL_Desktop * desktop, const float x, const float y, const float scaleX, const float scaleY)
void egl_desktop_render(EGL_Desktop * desktop, const float x, const float y, const float scaleX, const float scaleY, const bool nearest)
{
if (!desktop->shader)
return;
egl_shader_use(desktop->shader);
glUniform4f(desktop->uDesktopPos, x, y, scaleX, scaleY);
glUniform4f(desktop->uDesktopPos , x, y, scaleX, scaleY);
glUniform1i(desktop->uNearest , nearest ? 1 : 0);
glUniform2f(desktop->uDesktopSize, desktop->width, desktop->height);
if (desktop->nvGain)
{
glUniform1i(desktop->uNV, 1);

2
client/renderers/EGL/desktop.h
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@ -30,4 +30,4 @@ void egl_desktop_free(EGL_Desktop ** desktop);
bool egl_desktop_prepare_update(EGL_Desktop * desktop, const bool sourceChanged, const LG_RendererFormat format, const uint8_t * data);
bool egl_desktop_perform_update(EGL_Desktop * desktop, const bool sourceChanged);
void egl_desktop_render(EGL_Desktop * desktop, const float x, const float y, const float scaleX, const float scaleY);
void egl_desktop_render(EGL_Desktop * desktop, const float x, const float y, const float scaleX, const float scaleY, const bool nearest);

5
client/renderers/EGL/egl.c
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@ -86,6 +86,7 @@ struct Inst
float scaleX , scaleY;
float splashRatio;
float screenScaleX, screenScaleY;
bool useNearest;
float mouseWidth , mouseHeight;
float mouseScaleX, mouseScaleY;
@ -239,6 +240,8 @@ bool egl_on_frame_event(void * opaque, const LG_RendererFormat format, const uin
if (this->sourceChanged)
memcpy(&this->format, &format, sizeof(LG_RendererFormat));
this->useNearest = this->width < format.width || this->height < format.height;
if (!egl_desktop_prepare_update(this->desktop, this->sourceChanged, format, data))
{
DEBUG_INFO("Failed to prepare to update the desktop");
@ -420,7 +423,7 @@ bool egl_render(void * opaque, SDL_Window * window)
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
egl_desktop_render(this->desktop, this->translateX, this->translateY, this->scaleX, this->scaleY);
egl_desktop_render(this->desktop, this->translateX, this->translateY, this->scaleX, this->scaleY, this->useNearest);
egl_cursor_render(this->cursor);
if (!this->waitDone)

11
client/renderers/EGL/shader/desktop_rgb.frag
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@ -4,12 +4,19 @@ in highp vec2 uv;
out highp vec4 color;
uniform sampler2D sampler1;
uniform int nv;
uniform int nearest;
uniform highp vec2 size;
uniform int nv;
uniform highp float nvGain;
void main()
{
color = texture(sampler1, uv);
if(nearest == 1)
color = texture(sampler1, uv);
else
color = texelFetch(sampler1, ivec2(uv * size), 0);
if (nv == 1)
{

31
client/renderers/EGL/shader/desktop_yuv.frag
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@ -3,7 +3,10 @@
in highp vec2 uv;
out highp vec4 color;
uniform int nv;
uniform int nearest;
uniform highp vec2 size;
uniform int nv;
uniform highp float nvGain;
uniform sampler2D sampler1;
@ -12,12 +15,26 @@ uniform sampler2D sampler3;
void main()
{
highp vec4 yuv = vec4(
texture(sampler1, uv).r,
texture(sampler2, uv).r,
texture(sampler3, uv).r,
1.0
);
highp vec4 yuv;
if(nearest == 1)
{
yuv = vec4(
texture(sampler1, uv).r,
texture(sampler2, uv).r,
texture(sampler3, uv).r,
1.0
);
}
else
{
highp ivec2 px = ivec2(uv * size);
yuv = vec4(
texelFetch(sampler1, px, 0).r,
texelFetch(sampler2, px, 0).r,
texelFetch(sampler3, px, 0).r,
1.0
);
}
highp mat4 yuv_to_rgb = mat4(
1.0, 0.0 , 1.402, -0.701,