[libcamera-devel] [PATCH v4 1/3] qcam: add OpenGL shader code as QT resource
Show Liu
show.liu at linaro.org
Fri Aug 21 18:16:00 CEST 2020
qcam: add OpenGL shader code as QT resource
Signed-off-by: Show Liu <show.liu at linaro.org>
---
src/qcam/assets/shader/NV_2_planes_UV_f.glsl | 32 +++++++++++++++++++
src/qcam/assets/shader/NV_2_planes_VU_f.glsl | 32 +++++++++++++++++++
src/qcam/assets/shader/NV_3_planes_UV_f.glsl | 33 ++++++++++++++++++++
src/qcam/assets/shader/NV_3_planes_VU_f.glsl | 33 ++++++++++++++++++++
src/qcam/assets/shader/NV_vertex_shader.glsl | 16 ++++++++++
src/qcam/assets/shader/shaders.qrc | 10 ++++++
src/qcam/meson.build | 1 +
7 files changed, 157 insertions(+)
create mode 100644 src/qcam/assets/shader/NV_2_planes_UV_f.glsl
create mode 100644 src/qcam/assets/shader/NV_2_planes_VU_f.glsl
create mode 100644 src/qcam/assets/shader/NV_3_planes_UV_f.glsl
create mode 100644 src/qcam/assets/shader/NV_3_planes_VU_f.glsl
create mode 100644 src/qcam/assets/shader/NV_vertex_shader.glsl
create mode 100644 src/qcam/assets/shader/shaders.qrc
diff --git a/src/qcam/assets/shader/NV_2_planes_UV_f.glsl b/src/qcam/assets/shader/NV_2_planes_UV_f.glsl
new file mode 100644
index 0000000..32c6e90
--- /dev/null
+++ b/src/qcam/assets/shader/NV_2_planes_UV_f.glsl
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * NV_2_planes_UV_f.glsl - Fragment shader code for NV12, NV16 and NV24 formats
+ */
+
+#ifdef GL_ES
+precision highp float;
+#endif
+
+varying vec2 textureOut;
+uniform sampler2D tex_y;
+uniform sampler2D tex_u;
+
+void main(void)
+{
+ vec3 yuv;
+ vec3 rgb;
+ mat3 convert_mat = mat3(
+ vec3(1.1640625, 1.1640625, 1.1640625),
+ vec3(0.0, -0.390625, 2.015625),
+ vec3(1.5975625, -0.8125, 0.0)
+ );
+
+ yuv.x = texture2D(tex_y, textureOut).r - 0.0625;
+ yuv.y = texture2D(tex_u, textureOut).r - 0.5;
+ yuv.z = texture2D(tex_u, textureOut).g - 0.5;
+
+ rgb = convert_mat * yuv;
+ gl_FragColor = vec4(rgb, 1.0);
+}
diff --git a/src/qcam/assets/shader/NV_2_planes_VU_f.glsl b/src/qcam/assets/shader/NV_2_planes_VU_f.glsl
new file mode 100644
index 0000000..aae12de
--- /dev/null
+++ b/src/qcam/assets/shader/NV_2_planes_VU_f.glsl
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * NV_2_planes_VU_f.glsl - Fragment shader code for NV21, NV61 and NV42 formats
+ */
+
+#ifdef GL_ES
+precision highp float;
+#endif
+
+varying vec2 textureOut;
+uniform sampler2D tex_y;
+uniform sampler2D tex_u;
+
+void main(void)
+{
+ vec3 yuv;
+ vec3 rgb;
+ mat3 convert_mat = mat3(
+ vec3(1.1640625, 1.1640625, 1.1640625),
+ vec3(0.0, -0.390625, 2.015625),
+ vec3(1.5975625, -0.8125, 0.0)
+ );
+
+ yuv.x = texture2D(tex_y, textureOut).r - 0.0625;
+ yuv.y = texture2D(tex_u, textureOut).g - 0.5;
+ yuv.z = texture2D(tex_u, textureOut).r - 0.5;
+
+ rgb = convert_mat * yuv;
+ gl_FragColor = vec4(rgb, 1.0);
+}
diff --git a/src/qcam/assets/shader/NV_3_planes_UV_f.glsl b/src/qcam/assets/shader/NV_3_planes_UV_f.glsl
new file mode 100644
index 0000000..21fff3a
--- /dev/null
+++ b/src/qcam/assets/shader/NV_3_planes_UV_f.glsl
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * NV_3_planes_UV_f.glsl - Fragment shader code for YUV420 format
+ */
+
+#ifdef GL_ES
+precision highp float;
+#endif
+
+varying vec2 textureOut;
+uniform sampler2D tex_y;
+uniform sampler2D tex_u;
+uniform sampler2D tex_v;
+
+void main(void)
+{
+ vec3 yuv;
+ vec3 rgb;
+ mat3 convert_mat = mat3(
+ vec3(1.1640625, 1.1640625, 1.1640625),
+ vec3(0.0, -0.390625, 2.015625),
+ vec3(1.5975625, -0.8125, 0.0)
+ );
+
+ yuv.x = texture2D(tex_y, textureOut).r - 0.0625;
+ yuv.y = texture2D(tex_u, textureOut).r - 0.5;
+ yuv.z = texture2D(tex_v, textureOut).g - 0.5;
+
+ rgb = convert_mat * yuv;
+ gl_FragColor = vec4(rgb, 1.0);
+}
diff --git a/src/qcam/assets/shader/NV_3_planes_VU_f.glsl b/src/qcam/assets/shader/NV_3_planes_VU_f.glsl
new file mode 100644
index 0000000..df00170
--- /dev/null
+++ b/src/qcam/assets/shader/NV_3_planes_VU_f.glsl
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * NV_3_planes_VU_f.glsl - Fragment shader code for YVU420 format
+ */
+
+#ifdef GL_ES
+precision highp float;
+#endif
+
+varying vec2 textureOut;
+uniform sampler2D tex_y;
+uniform sampler2D tex_u;
+uniform sampler2D tex_v;
+
+void main(void)
+{
+ vec3 yuv;
+ vec3 rgb;
+ mat3 convert_mat = mat3(
+ vec3(1.1640625, 1.1640625, 1.1640625),
+ vec3(0.0, -0.390625, 2.015625),
+ vec3(1.5975625, -0.8125, 0.0)
+ );
+
+ yuv.x = texture2D(tex_y, textureOut).r - 0.0625;
+ yuv.y = texture2D(tex_u, textureOut).g - 0.5;
+ yuv.z = texture2D(tex_v, textureOut).r - 0.5;
+
+ rgb = convert_mat * yuv;
+ gl_FragColor = vec4(rgb, 1.0);
+}
diff --git a/src/qcam/assets/shader/NV_vertex_shader.glsl b/src/qcam/assets/shader/NV_vertex_shader.glsl
new file mode 100644
index 0000000..403b791
--- /dev/null
+++ b/src/qcam/assets/shader/NV_vertex_shader.glsl
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * NV_vertex_shader.glsl - Vertex shader code for NV family
+ */
+
+attribute vec4 vertexIn;
+attribute vec2 textureIn;
+varying vec2 textureOut;
+
+void main(void)
+{
+ gl_Position = vertexIn;
+ textureOut = textureIn;
+}
diff --git a/src/qcam/assets/shader/shaders.qrc b/src/qcam/assets/shader/shaders.qrc
new file mode 100644
index 0000000..6fe4c7f
--- /dev/null
+++ b/src/qcam/assets/shader/shaders.qrc
@@ -0,0 +1,10 @@
+<!-- SPDX-License-Identifier: GPL-2.0-or-later -->
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+<file>./NV_vertex_shader.glsl</file>
+<file>./NV_2_planes_UV_f.glsl</file>
+<file>./NV_2_planes_VU_f.glsl</file>
+<file>./NV_3_planes_UV_f.glsl</file>
+<file>./NV_3_planes_VU_f.glsl</file>
+</qresource>
+</RCC>
diff --git a/src/qcam/meson.build b/src/qcam/meson.build
index 6ea886a..e0c6f26 100644
--- a/src/qcam/meson.build
+++ b/src/qcam/meson.build
@@ -16,6 +16,7 @@ qcam_moc_headers = files([
qcam_resources = files([
'assets/feathericons/feathericons.qrc',
+ 'assets/shader/shaders.qrc'
])
qt5 = import('qt5')
--
2.20.1
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