src/gallium/state_trackers/vega/api_masks.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/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
  37 void 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
  71 void 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
 108 void 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
 137 VGMaskLayer vegaCreateMaskLayer(VGint width, VGint height)
 138 {
 139    struct vg_context *ctx = vg_current_context();
 140
 141    if (width <= 0 || height <= 0 ||
 142        width > vegaGeti(VG_MAX_IMAGE_WIDTH) ||
 143        height > vegaGeti(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
 151 void 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
 169 void 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
 214 void 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