api_masks.c revision d41e694cf78ada8c9258f96995115c9da8437894 
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/openvg.h"
28
29#include "mask.h"
30#include "api.h"
31#include "handle.h"
32#include "renderer.h"
33
34#include "vg_context.h"
35#include "pipe/p_context.h"
36
37void vegaMask(VGHandle mask, VGMaskOperation operation,
38              VGint x, VGint y,
39              VGint width, VGint height)
40{
41   struct vg_context *ctx = vg_current_context();
42
43   if (width <=0 || height <= 0) {
44      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
45      return;
46   }
47
48   if (operation < VG_CLEAR_MASK || operation > VG_SUBTRACT_MASK) {
49      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
50      return;
51   }
52
53
54   vg_validate_state(ctx);
55
56   if (operation == VG_CLEAR_MASK) {
57      mask_fill(x, y, width, height, 0.f);
58   } else if (operation == VG_FILL_MASK) {
59      mask_fill(x, y, width, height, 1.f);
60   } else if (vg_object_is_valid(mask, VG_OBJECT_IMAGE)) {
61      struct vg_image *image = handle_to_image(mask);
62      mask_using_image(image, operation, x, y, width, height);
63   } else if (vg_object_is_valid(mask, VG_OBJECT_MASK)) {
64      struct vg_mask_layer *layer = handle_to_masklayer(mask);
65      mask_using_layer(layer, operation, x, y, width, height);
66   } else {
67      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
68   }
69}
70
71void vegaClear(VGint x, VGint y,
72               VGint width, VGint height)
73{
74   struct vg_context *ctx = vg_current_context();
75   struct st_framebuffer *stfb = ctx->draw_buffer;
76
77   if (width <= 0 || height <= 0) {
78      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
79      return;
80   }
81
82   vg_validate_state(ctx);
83#if 0
84   debug_printf("Clear [%d, %d, %d, %d] with [%f, %f, %f, %f]\n",
85                x, y, width, height,
86                ctx->state.vg.clear_color[0],
87                ctx->state.vg.clear_color[1],
88                ctx->state.vg.clear_color[2],
89                ctx->state.vg.clear_color[3]);
90#endif
91
92   /* check for a whole surface clear */
93   if (!ctx->state.vg.scissoring &&
94       (x == 0 && y == 0 && width == stfb->width && height == stfb->height)) {
95      ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL,
96                       ctx->state.vg.clear_color, 1., 0);
97   } else if (renderer_clear_begin(ctx->renderer)) {
98      /* XXX verify coord round-off */
99      renderer_clear(ctx->renderer, x, y, width, height, ctx->state.vg.clear_color);
100      renderer_clear_end(ctx->renderer);
101   }
102}
103
104
105#ifdef OPENVG_VERSION_1_1
106
107
108void vegaRenderToMask(VGPath path,
109                      VGbitfield paintModes,
110                      VGMaskOperation operation)
111{
112   struct vg_context *ctx = vg_current_context();
113
114   if (path == VG_INVALID_HANDLE) {
115      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
116      return;
117   }
118   if (!paintModes || (paintModes&(~(VG_STROKE_PATH|VG_FILL_PATH)))) {
119      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
120      return;
121   }
122   if (operation < VG_CLEAR_MASK ||
123       operation > VG_SUBTRACT_MASK) {
124      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
125      return;
126   }
127   if (!vg_object_is_valid(path, VG_OBJECT_PATH)) {
128      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
129      return;
130   }
131
132   vg_validate_state(ctx);
133
134   mask_render_to(handle_to_path(path), paintModes, operation);
135}
136
137VGMaskLayer vegaCreateMaskLayer(VGint width, VGint height)
138{
139   struct vg_context *ctx = vg_current_context();
140
141   if (width <= 0 || height <= 0 ||
142       width > vgGeti(VG_MAX_IMAGE_WIDTH) ||
143       height > vgGeti(VG_MAX_IMAGE_HEIGHT)) {
144      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
145      return VG_INVALID_HANDLE;
146   }
147
148   return masklayer_to_handle(mask_layer_create(width, height));
149}
150
151void vegaDestroyMaskLayer(VGMaskLayer maskLayer)
152{
153   struct vg_mask_layer *mask = 0;
154   struct vg_context *ctx = vg_current_context();
155
156   if (maskLayer == VG_INVALID_HANDLE) {
157      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
158      return;
159   }
160   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
161      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
162      return;
163   }
164
165   mask = handle_to_masklayer(maskLayer);
166   mask_layer_destroy(mask);
167}
168
169void vegaFillMaskLayer(VGMaskLayer maskLayer,
170                       VGint x, VGint y,
171                       VGint width, VGint height,
172                       VGfloat value)
173{
174   struct vg_mask_layer *mask = 0;
175   struct vg_context *ctx = vg_current_context();
176
177   if (maskLayer == VG_INVALID_HANDLE) {
178      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
179      return;
180   }
181
182   if (value < 0 || value > 1) {
183      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
184      return;
185   }
186
187   if (width <= 0 || height <= 0) {
188      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
189      return;
190   }
191   if (x < 0 || y < 0 || (x + width) < 0 || (y + height) < 0) {
192      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
193      return;
194   }
195
196   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
197      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
198      return;
199   }
200
201   mask = handle_to_masklayer(maskLayer);
202
203   if (x + width > mask_layer_width(mask) ||
204       y + height > mask_layer_height(mask)) {
205      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
206      return;
207   }
208
209   vg_validate_state(ctx);
210
211   mask_layer_fill(mask, x, y, width, height, value);
212}
213
214void vegaCopyMask(VGMaskLayer maskLayer,
215                  VGint sx, VGint sy,
216                  VGint dx, VGint dy,
217                  VGint width, VGint height)
218{
219   struct vg_context *ctx = vg_current_context();
220   struct vg_mask_layer *mask = 0;
221
222   if (maskLayer == VG_INVALID_HANDLE) {
223      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
224      return;
225   }
226   if (width <= 0 || height <= 0) {
227      vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
228      return;
229   }
230   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
231      vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
232      return;
233   }
234
235   vg_validate_state(ctx);
236
237   mask = handle_to_masklayer(maskLayer);
238   mask_copy(mask, sx, sy, dx, dy, width, height);
239}
240
241#endif
242