OpenVG 1.0 State Tracker

Import of the OpenVG 1.0 state tracker for Gallium.

1 files changed, 74 insertions, 0 deletions

diff --git a/progs/openvg/trivial/vguarc.c b/progs/openvg/trivial/vguarc.c
new file mode 100644
index 00000000000..8d971d5c09c
--- /dev/null
+++ b/progs/openvg/trivial/vguarc.c
@@ -0,0 +1,74 @@
+#include "eglcommon.h"
+
+#include <VG/openvg.h>
+#include <VG/vgu.h>
+
+const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
+const VGfloat color[4] = {0.4, 0.1, 1.0, 1.0};
+
+VGPath path;
+VGPaint paint;
+
+
+static void
+init(void)
+{
+    VGfloat clearColor[] = {0.0f, 0.0f, 0.0f, 1.0f};/* black color */
+    VGfloat greenColor[] = {0.0f, 1.0f, 0.0f, 1.0f};/* green color */
+    VGint arcType = VGU_ARC_OPEN;
+    VGfloat x, y, w, h, startAngle, angleExtent;
+
+    x = 150;
+    y = 150;
+    w = 150;
+    h = 150;
+#if 0
+    startAngle  = -540.0f;
+    angleExtent = 270.0f;
+#else
+    startAngle  = 270.0f;
+    angleExtent = 90.0f;
+#endif
+
+    paint = vgCreatePaint();
+
+    vgSetPaint(paint, VG_STROKE_PATH);
+    vgSetParameterfv(paint, VG_PAINT_COLOR, 4, greenColor);
+    vgSetParameteri( paint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
+    vgSetf(VG_STROKE_LINE_WIDTH, 6.0f);
+    vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_NONANTIALIASED);
+    vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
+
+    path  = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
+                         1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
+
+    vguArc(path, x, y, w, h, startAngle, angleExtent, arcType);
+
+    vgSeti(VG_STROKE_CAP_STYLE, VG_CAP_BUTT);
+    vgSeti(VG_STROKE_JOIN_STYLE, VG_JOIN_BEVEL);
+    vgSetf(VG_STROKE_MITER_LIMIT, 4.0f);
+}
+
+/* new window size or exposure */
+static void
+reshape(int w, int h)
+{
+   vgLoadIdentity();
+}
+
+static void
+draw(void)
+{
+   vgClear(0, 0, window_width(), window_height());
+   vgDrawPath(path, VG_STROKE_PATH);
+
+   vgFlush();
+}
+
+
+int main(int argc, char **argv)
+{
+    // set_window_size(64, 63);
+   return run(argc, argv, init, reshape,
+              draw, 0);
+}