src/gallium/state_trackers/vega/vg_state.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27 #include "vg_state.h"
  28
  29 #include <string.h>
  30
  31 void vg_init_state(struct vg_state *state)
  32 {
  33    state->matrix_mode = VG_MATRIX_PATH_USER_TO_SURFACE;
  34    state->fill_rule = VG_EVEN_ODD;
  35    state->image_quality = VG_IMAGE_QUALITY_FASTER;
  36    state->rendering_quality = VG_RENDERING_QUALITY_BETTER;
  37    state->blend_mode = VG_BLEND_SRC_OVER;
  38    state->image_mode = VG_DRAW_IMAGE_NORMAL;
  39
  40    memset(state->scissor_rects, 0, sizeof(state->scissor_rects));
  41    state->scissor_rects_num = 0;
  42
  43    state->color_transform = VG_FALSE;
  44    state->color_transform_values[0] = 1.0f;
  45    state->color_transform_values[1] = 1.0f;
  46    state->color_transform_values[2] = 1.0f;
  47    state->color_transform_values[3] = 1.0f;
  48    state->color_transform_values[4] = 0.0f;
  49    state->color_transform_values[5] = 0.0f;
  50    state->color_transform_values[6] = 0.0f;
  51    state->color_transform_values[7] = 0.0f;
  52
  53    /* Stroke parameters */
  54    state->stroke.line_width.f       = 1.0f;
  55    state->stroke.line_width.i       = 1;
  56    state->stroke.cap_style        = VG_CAP_BUTT;
  57    state->stroke.join_style       = VG_JOIN_MITER;
  58    state->stroke.miter_limit.f      = 4.0f;
  59    state->stroke.miter_limit.i      = 4;
  60    state->stroke.dash_pattern_num = 0;
  61    state->stroke.dash_phase.f       = 0.0f;
  62    state->stroke.dash_phase.i       = 0;
  63    state->stroke.dash_phase_reset = VG_FALSE;
  64
  65    /* Edge fill color for VG_TILE_FILL tiling mode */
  66    state->tile_fill_color[0] = 0.0f;
  67    state->tile_fill_color[1] = 0.0f;
  68    state->tile_fill_color[2] = 0.0f;
  69    state->tile_fill_color[3] = 0.0f;
  70
  71    /* Color for vgClear */
  72    state->clear_color[0] = 0.0f;
  73    state->clear_color[1] = 0.0f;
  74    state->clear_color[2] = 0.0f;
  75    state->clear_color[3] = 0.0f;
  76
  77    /* Glyph origin */
  78    state->glyph_origin[0].f = 0.0f;
  79    state->glyph_origin[1].f = 0.0f;
  80    state->glyph_origin[0].i = 0;
  81    state->glyph_origin[1].i = 0;
  82
  83    /* Enable/disable alpha masking and scissoring */
  84    state->masking = VG_FALSE;
  85    state->scissoring = VG_FALSE;
  86
  87    /* Pixel layout information */
  88    state->pixel_layout = VG_PIXEL_LAYOUT_UNKNOWN;
  89    state->screen_layout = VG_PIXEL_LAYOUT_UNKNOWN;
  90
  91    /* Source format selection for image filters */
  92    state->filter_format_linear = VG_FALSE;
  93    state->filter_format_premultiplied = VG_FALSE;
  94
  95    /* Destination write enable mask for image filters */
  96    state->filter_channel_mask = (VG_RED | VG_GREEN | VG_BLUE | VG_ALPHA);
  97
  98    matrix_load_identity(&state->path_user_to_surface_matrix);
  99    matrix_load_identity(&state->image_user_to_surface_matrix);
 100    matrix_load_identity(&state->fill_paint_to_user_matrix);
 101    matrix_load_identity(&state->stroke_paint_to_user_matrix);
 102    matrix_load_identity(&state->glyph_user_to_surface_matrix);
 103 }
 104
 105 struct matrix *vg_state_matrix(struct vg_state *state)
 106 {
 107     switch(state->matrix_mode) {
 108     case VG_MATRIX_PATH_USER_TO_SURFACE:
 109        return &state->path_user_to_surface_matrix;
 110     case VG_MATRIX_IMAGE_USER_TO_SURFACE:
 111        return &state->image_user_to_surface_matrix;
 112     case VG_MATRIX_FILL_PAINT_TO_USER:
 113        return &state->fill_paint_to_user_matrix;
 114     case VG_MATRIX_STROKE_PAINT_TO_USER:
 115        return &state->stroke_paint_to_user_matrix;
 116 #ifdef OPENVG_VERSION_1_1
 117     case VG_MATRIX_GLYPH_USER_TO_SURFACE:
 118        return &state->glyph_user_to_surface_matrix;
 119 #endif
 120     default:
 121        break;
 122     }
 123     return NULL;
 124 }