OpenVG 1.0 State Tracker

Import of the OpenVG 1.0 state tracker for Gallium.

1 files changed, 124 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/vega/vg_state.c b/src/gallium/state_trackers/vega/vg_state.c
new file mode 100644
index 0000000000..6f6bfdaf7a
--- /dev/null
+++ b/src/gallium/state_trackers/vega/vg_state.c
@@ -0,0 +1,124 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.  All Rights Reserved.
+ *
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include "vg_state.h"
+
+#include <string.h>
+
+void vg_init_state(struct vg_state *state)
+{
+   state->matrix_mode = VG_MATRIX_PATH_USER_TO_SURFACE;
+   state->fill_rule = VG_EVEN_ODD;
+   state->image_quality = VG_IMAGE_QUALITY_FASTER;
+   state->rendering_quality = VG_RENDERING_QUALITY_BETTER;
+   state->blend_mode = VG_BLEND_SRC_OVER;
+   state->image_mode = VG_DRAW_IMAGE_NORMAL;
+
+   memset(state->scissor_rects, 0, sizeof(state->scissor_rects));
+   state->scissor_rects_num = 0;
+
+   state->color_transform = VG_FALSE;
+   state->color_transform_values[0] = 1.0f;
+   state->color_transform_values[1] = 1.0f;
+   state->color_transform_values[2] = 1.0f;
+   state->color_transform_values[3] = 1.0f;
+   state->color_transform_values[4] = 0.0f;
+   state->color_transform_values[5] = 0.0f;
+   state->color_transform_values[6] = 0.0f;
+   state->color_transform_values[7] = 0.0f;
+
+   /* Stroke parameters */
+   state->stroke.line_width.f       = 1.0f;
+   state->stroke.line_width.i       = 1;
+   state->stroke.cap_style        = VG_CAP_BUTT;
+   state->stroke.join_style       = VG_JOIN_MITER;
+   state->stroke.miter_limit.f      = 4.0f;
+   state->stroke.miter_limit.i      = 4;
+   state->stroke.dash_pattern_num = 0;
+   state->stroke.dash_phase.f       = 0.0f;
+   state->stroke.dash_phase.i       = 0;
+   state->stroke.dash_phase_reset = VG_FALSE;
+
+   /* Edge fill color for VG_TILE_FILL tiling mode */
+   state->tile_fill_color[0] = 0.0f;
+   state->tile_fill_color[1] = 0.0f;
+   state->tile_fill_color[2] = 0.0f;
+   state->tile_fill_color[3] = 0.0f;
+
+   /* Color for vgClear */
+   state->clear_color[0] = 0.0f;
+   state->clear_color[1] = 0.0f;
+   state->clear_color[2] = 0.0f;
+   state->clear_color[3] = 0.0f;
+
+   /* Glyph origin */
+   state->glyph_origin[0].f = 0.0f;
+   state->glyph_origin[1].f = 0.0f;
+   state->glyph_origin[0].i = 0;
+   state->glyph_origin[1].i = 0;
+
+   /* Enable/disable alpha masking and scissoring */
+   state->masking = VG_FALSE;
+   state->scissoring = VG_FALSE;
+
+   /* Pixel layout information */
+   state->pixel_layout = VG_PIXEL_LAYOUT_UNKNOWN;
+   state->screen_layout = VG_PIXEL_LAYOUT_UNKNOWN;
+
+   /* Source format selection for image filters */
+   state->filter_format_linear = VG_FALSE;
+   state->filter_format_premultiplied = VG_FALSE;
+
+   /* Destination write enable mask for image filters */
+   state->filter_channel_mask = (VG_RED | VG_GREEN | VG_BLUE | VG_ALPHA);
+
+   matrix_load_identity(&state->path_user_to_surface_matrix);
+   matrix_load_identity(&state->image_user_to_surface_matrix);
+   matrix_load_identity(&state->fill_paint_to_user_matrix);
+   matrix_load_identity(&state->stroke_paint_to_user_matrix);
+   matrix_load_identity(&state->glyph_user_to_surface_matrix);
+}
+
+struct matrix *vg_state_matrix(struct vg_state *state)
+{
+    switch(state->matrix_mode) {
+    case VG_MATRIX_PATH_USER_TO_SURFACE:
+       return &state->path_user_to_surface_matrix;
+    case VG_MATRIX_IMAGE_USER_TO_SURFACE:
+       return &state->image_user_to_surface_matrix;
+    case VG_MATRIX_FILL_PAINT_TO_USER:
+       return &state->fill_paint_to_user_matrix;
+    case VG_MATRIX_STROKE_PAINT_TO_USER:
+       return &state->stroke_paint_to_user_matrix;
+#ifdef OPENVG_VERSION_1_1
+    case VG_MATRIX_GLYPH_USER_TO_SURFACE:
+       return &state->glyph_user_to_surface_matrix;
+#endif
+    default:
+       break;
+    }
+    return NULL;
+}