OpenVG 1.0 State Tracker

Import of the OpenVG 1.0 state tracker for Gallium.

1 files changed, 56 insertions, 0 deletions

diff --git a/progs/openvg/trivial/lineto.c b/progs/openvg/trivial/lineto.c
new file mode 100644
index 00000000000..94e29818116
--- /dev/null
+++ b/progs/openvg/trivial/lineto.c
@@ -0,0 +1,56 @@
+#include "eglcommon.h"
+
+#include <VG/openvg.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 fill;
+
+
+static void
+init(void)
+{
+   static const VGubyte sqrCmds[5] = {VG_MOVE_TO_ABS, VG_HLINE_TO_ABS, VG_VLINE_TO_ABS, VG_HLINE_TO_ABS, VG_CLOSE_PATH};
+   static const VGfloat sqrCoords[5]   = {50.0f, 50.0f, 250.0f, 250.0f, 50.0f};
+   path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0,
+                       VG_PATH_CAPABILITY_APPEND_TO);
+   vgAppendPathData(path, 5, sqrCmds, sqrCoords);
+
+   fill = vgCreatePaint();
+   vgSetParameterfv(fill, VG_PAINT_COLOR, 4, color);
+   vgSetPaint(fill, VG_FILL_PATH);
+
+   vgSetfv(VG_CLEAR_COLOR, 4, white_color);
+   vgSetf(VG_STROKE_LINE_WIDTH, 10);
+   vgSeti(VG_STROKE_CAP_STYLE, VG_CAP_BUTT);
+   vgSeti(VG_STROKE_JOIN_STYLE, VG_JOIN_ROUND);
+   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());
+   vgSeti(VG_MATRIX_MODE, VG_MATRIX_STROKE_PAINT_TO_USER);
+   vgLoadIdentity();
+   vgScale(2.25, 2.25);
+   vgDrawPath(path, VG_STROKE_PATH);
+
+   vgFlush();
+}
+
+
+int main(int argc, char **argv)
+{
+   return run(argc, argv, init, reshape,
+              draw, 0);
+}