| Message ID | 20210527105511.447089-2-andrey.konovalov@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series |
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| Related | show |
Hi Andrey, Thank you for the patch. On Thu, May 27, 2021 at 01:55:07PM +0300, Andrey Konovalov wrote: > In preparation to extend the supported formats, extend the tex_stepx > uniform to cover the steps between texels in both horizontal and > vertical directions. > > Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > src/qcam/assets/shader/YUV_packed.frag | 8 ++++---- > src/qcam/viewfinder_gl.cpp | 7 ++++--- > src/qcam/viewfinder_gl.h | 2 +- > 3 files changed, 9 insertions(+), 8 deletions(-) > > diff --git a/src/qcam/assets/shader/YUV_packed.frag b/src/qcam/assets/shader/YUV_packed.frag > index 224dfafe..d6efd4ce 100644 > --- a/src/qcam/assets/shader/YUV_packed.frag > +++ b/src/qcam/assets/shader/YUV_packed.frag > @@ -12,7 +12,7 @@ precision mediump float; > varying vec2 textureOut; > > uniform sampler2D tex_y; > -uniform float tex_stepx; > +uniform vec2 tex_step; > > void main(void) > { > @@ -49,10 +49,10 @@ void main(void) > * a = fract(x) * 2 - 1 if fract(x) >= 0.5 > */ > vec2 pos = textureOut; > - float f_x = fract(pos.x / tex_stepx); > + float f_x = fract(pos.x / tex_step.x); > > - vec4 left = texture2D(tex_y, vec2(pos.x - f_x * tex_stepx, pos.y)); > - vec4 right = texture2D(tex_y, vec2(pos.x + (1.0 - f_x) * tex_stepx , pos.y)); > + vec4 left = texture2D(tex_y, vec2(pos.x - f_x * tex_step.x, pos.y)); > + vec4 right = texture2D(tex_y, vec2(pos.x + (1.0 - f_x) * tex_step.x , pos.y)); > > #if defined(YUV_PATTERN_UYVY) > float y_left = mix(left.g, left.a, f_x * 2.0); > diff --git a/src/qcam/viewfinder_gl.cpp b/src/qcam/viewfinder_gl.cpp > index 5d9b442e..ff719418 100644 > --- a/src/qcam/viewfinder_gl.cpp > +++ b/src/qcam/viewfinder_gl.cpp > @@ -289,7 +289,7 @@ bool ViewFinderGL::createFragmentShader() > textureUniformY_ = shaderProgram_.uniformLocation("tex_y"); > textureUniformU_ = shaderProgram_.uniformLocation("tex_u"); > textureUniformV_ = shaderProgram_.uniformLocation("tex_v"); > - textureUniformStepX_ = shaderProgram_.uniformLocation("tex_stepx"); > + textureUniformStep_ = shaderProgram_.uniformLocation("tex_step"); > > /* Create the textures. */ > for (std::unique_ptr<QOpenGLTexture> &texture : textures_) { > @@ -508,8 +508,9 @@ void ViewFinderGL::doRender() > * ([0, 1]). There are exactly width - 1 steps between the > * leftmost and rightmost texels. > */ > - shaderProgram_.setUniformValue(textureUniformStepX_, > - 1.0f / (size_.width() / 2 - 1)); > + shaderProgram_.setUniformValue(textureUniformStep_, > + 1.0f / (size_.width() / 2 - 1), > + 1.0f /* not used */); > break; > > case libcamera::formats::ABGR8888: > diff --git a/src/qcam/viewfinder_gl.h b/src/qcam/viewfinder_gl.h > index 150fa4ae..1b1faa91 100644 > --- a/src/qcam/viewfinder_gl.h > +++ b/src/qcam/viewfinder_gl.h > @@ -85,7 +85,7 @@ private: > GLuint textureUniformU_; > GLuint textureUniformV_; > GLuint textureUniformY_; > - GLuint textureUniformStepX_; > + GLuint textureUniformStep_; > unsigned int horzSubSample_; > unsigned int vertSubSample_; >
diff --git a/src/qcam/assets/shader/YUV_packed.frag b/src/qcam/assets/shader/YUV_packed.frag index 224dfafe..d6efd4ce 100644 --- a/src/qcam/assets/shader/YUV_packed.frag +++ b/src/qcam/assets/shader/YUV_packed.frag @@ -12,7 +12,7 @@ precision mediump float; varying vec2 textureOut; uniform sampler2D tex_y; -uniform float tex_stepx; +uniform vec2 tex_step; void main(void) { @@ -49,10 +49,10 @@ void main(void) * a = fract(x) * 2 - 1 if fract(x) >= 0.5 */ vec2 pos = textureOut; - float f_x = fract(pos.x / tex_stepx); + float f_x = fract(pos.x / tex_step.x); - vec4 left = texture2D(tex_y, vec2(pos.x - f_x * tex_stepx, pos.y)); - vec4 right = texture2D(tex_y, vec2(pos.x + (1.0 - f_x) * tex_stepx , pos.y)); + vec4 left = texture2D(tex_y, vec2(pos.x - f_x * tex_step.x, pos.y)); + vec4 right = texture2D(tex_y, vec2(pos.x + (1.0 - f_x) * tex_step.x , pos.y)); #if defined(YUV_PATTERN_UYVY) float y_left = mix(left.g, left.a, f_x * 2.0); diff --git a/src/qcam/viewfinder_gl.cpp b/src/qcam/viewfinder_gl.cpp index 5d9b442e..ff719418 100644 --- a/src/qcam/viewfinder_gl.cpp +++ b/src/qcam/viewfinder_gl.cpp @@ -289,7 +289,7 @@ bool ViewFinderGL::createFragmentShader() textureUniformY_ = shaderProgram_.uniformLocation("tex_y"); textureUniformU_ = shaderProgram_.uniformLocation("tex_u"); textureUniformV_ = shaderProgram_.uniformLocation("tex_v"); - textureUniformStepX_ = shaderProgram_.uniformLocation("tex_stepx"); + textureUniformStep_ = shaderProgram_.uniformLocation("tex_step"); /* Create the textures. */ for (std::unique_ptr<QOpenGLTexture> &texture : textures_) { @@ -508,8 +508,9 @@ void ViewFinderGL::doRender() * ([0, 1]). There are exactly width - 1 steps between the * leftmost and rightmost texels. */ - shaderProgram_.setUniformValue(textureUniformStepX_, - 1.0f / (size_.width() / 2 - 1)); + shaderProgram_.setUniformValue(textureUniformStep_, + 1.0f / (size_.width() / 2 - 1), + 1.0f /* not used */); break; case libcamera::formats::ABGR8888: diff --git a/src/qcam/viewfinder_gl.h b/src/qcam/viewfinder_gl.h index 150fa4ae..1b1faa91 100644 --- a/src/qcam/viewfinder_gl.h +++ b/src/qcam/viewfinder_gl.h @@ -85,7 +85,7 @@ private: GLuint textureUniformU_; GLuint textureUniformV_; GLuint textureUniformY_; - GLuint textureUniformStepX_; + GLuint textureUniformStep_; unsigned int horzSubSample_; unsigned int vertSubSample_;
In preparation to extend the supported formats, extend the tex_stepx uniform to cover the steps between texels in both horizontal and vertical directions. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> --- src/qcam/assets/shader/YUV_packed.frag | 8 ++++---- src/qcam/viewfinder_gl.cpp | 7 ++++--- src/qcam/viewfinder_gl.h | 2 +- 3 files changed, 9 insertions(+), 8 deletions(-)