OpenVG 1.0 State Tracker

Import of the OpenVG 1.0 state tracker for Gallium.

1 files changed, 84 insertions, 0 deletions

diff --git a/progs/openvg/trivial/ellipse.c b/progs/openvg/trivial/ellipse.c
new file mode 100644
index 00000000000..4c7d4904f81
--- /dev/null
+++ b/progs/openvg/trivial/ellipse.c
@@ -0,0 +1,84 @@
+#include "eglcommon.h"
+
+#include <VG/openvg.h>
+
+#include <math.h>
+#include <stdlib.h>
+
+const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
+const VGfloat color[4] = {0.0, 0.0, 0.0, 1.0};
+
+VGPath path;
+VGPaint paint;
+
+static void
+init(void)
+{
+   VGfloat clearColor[] = {1.0f, 1.0f, 1.0f, 1.0f};/* white color */
+   VGfloat fillColor[] = {1.0f, 0.0f, 0.0f, 1.0f};/* red color */
+   static const VGubyte segments[4] = {VG_MOVE_TO_ABS,
+                                       VG_SCCWARC_TO_ABS,
+                                       VG_SCCWARC_TO_ABS,
+                                       VG_CLOSE_PATH};
+   VGfloat data[12];
+   const VGfloat cx = 0, cy=29, width=80, height=40;
+   const VGfloat hw = width * 0.5f;
+   const VGfloat hh = height * 0.5f;
+
+   data[0] = cx + hw;
+   data[1] = cy;
+   data[2] = hw;
+   data[3] = hh;
+   data[4] = 0;
+   data[5] = cx - hw;
+   data[6] = cy;
+   data[7] = hw;
+   data[8] = hh;
+   data[9] = 0;
+   data[10] = data[0];
+   data[11] = cy;
+
+   vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
+   vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_NONANTIALIASED);
+
+
+   path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
+                       1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
+   if (path == VG_INVALID_HANDLE) {
+      return;
+   }
+   paint = vgCreatePaint();
+   if (paint == VG_INVALID_HANDLE) {
+      vgDestroyPath(path);
+      return;
+   }
+
+   vgAppendPathData(path, 4, segments, data);
+   vgSetParameterfv(paint, VG_PAINT_COLOR, 4, fillColor);
+   vgSetParameteri( paint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
+   vgSetPaint(paint, VG_FILL_PATH);
+}
+
+/* new window size or exposure */
+static void
+reshape(int w, int h)
+{
+}
+
+static void
+draw(void)
+{
+   vgClear(0, 0, window_width(), window_height());
+   vgLoadIdentity();
+   vgTranslate(50, 21);
+   vgDrawPath(path, VG_FILL_PATH);
+   vgFlush();
+}
+
+
+int main(int argc, char **argv)
+{
+   set_window_size(100, 100);
+   return run(argc, argv, init, reshape,
+              draw, 0);
+}