test with solid color onlysolidColorOnlyShader

1 files changed, 49 insertions, 0 deletions

diff --git a/shaders/vkvg_source.frag b/shaders/vkvg_source.frag
new file mode 100644
index 0000000..e1de6ef
--- /dev/null
+++ b/shaders/vkvg_source.frag
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2018-2021 Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so, subject
+ * to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#version 450
+
+#extension GL_ARB_separate_shader_objects	: enable
+#extension GL_ARB_shading_language_420pack	: enable
+#extension GL_EXT_scalar_block_layout		: require
+
+layout (set=1, binding = 0) uniform sampler2D		source;
+
+layout (location = 0) in vec4		inSrc;		//source bounds or color depending on pattern type
+layout (location = 1) in flat float	inOpacity;
+layout (location = 2) in mat3x2		inMat;
+
+layout (location = 0) out vec4 outFragColor;
+
+layout (constant_id = 0) const int NUM_SAMPLES = 8;
+
+void main()
+{	
+	vec2 p = (gl_FragCoord.xy - inSrc.xy);
+	vec2 uv = vec2(
+		inMat[0][0] * p.x + inMat[1][0] * p.y + inMat[2][0],
+		inMat[0][1] * p.x + inMat[1][1] * p.y + inMat[2][1]
+	);
+
+	vec4 c = texture (source, uv / inSrc.zw);
+	c.a *= inOpacity;
+	outFragColor = c;
+}