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