Subversion Repositories Kolibri OS

/**************************************************************************

 *

 * 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.

 *

 **************************************************************************/

#ifndef VG_CONTEXT_H

#define VG_CONTEXT_H

#include "vg_state.h"

#include "pipe/p_format.h"

#include "pipe/p_state.h"

#include "util/u_pointer.h"

#include "util/u_math.h"

#include "state_tracker/st_api.h"

#include "cso_cache/cso_hash.h"

#include "cso_cache/cso_context.h"

struct renderer;

struct shaders_cache;

struct shader;

struct vg_shader;

struct mapi_table;

struct st_renderbuffer {

   enum pipe_format   format;

   struct pipe_surface *surface;

   struct pipe_resource *texture;

   VGint width, height;

};

struct st_framebuffer {

   VGint width, height;

   struct st_renderbuffer *strb;

   struct st_renderbuffer *dsrb;

   struct pipe_sampler_view *surface_mask_view;

   struct pipe_sampler_view *blend_texture_view;

   struct st_framebuffer_iface *iface;

   enum st_attachment_type strb_att;

   void *privateData;

   int32_t stamp;

   int32_t iface_stamp;

};

enum vg_object_type {

   VG_OBJECT_UNKNOWN = 0,

   VG_OBJECT_PAINT,

   VG_OBJECT_IMAGE,

   VG_OBJECT_MASK,

   VG_OBJECT_FONT,

   VG_OBJECT_PATH,

   VG_OBJECT_LAST

};

enum dirty_state {

   BLEND_DIRTY         = 1 << 0,

   FRAMEBUFFER_DIRTY   = 1 << 1,

   DEPTH_STENCIL_DIRTY = 1 << 2,

   PAINT_DIRTY         = 1 << 3,

   ALL_DIRTY           = BLEND_DIRTY |

                         FRAMEBUFFER_DIRTY |

                         DEPTH_STENCIL_DIRTY |

                         PAINT_DIRTY

};

struct vg_context

{

   struct st_context_iface iface;

   struct mapi_table *dispatch;

   struct pipe_context *pipe;

   enum pipe_format ds_format;

   struct {

      struct vg_state vg;

      VGbitfield dirty;

   } state;

   VGErrorCode _error;

   struct st_framebuffer *draw_buffer;

   struct cso_hash *owned_objects[VG_OBJECT_LAST];

   struct {

      struct pipe_resource *cbuf;

      struct pipe_sampler_state sampler;

      struct vg_shader *union_fs;

      struct vg_shader *intersect_fs;

      struct vg_shader *subtract_fs;

      struct vg_shader *set_fs;

   } mask;

   struct cso_context *cso_context;

   struct renderer *renderer;

   struct shaders_cache *sc;

   struct shader *shader;

   struct pipe_sampler_state blend_sampler;

   struct vg_paint *default_paint;

   struct blit_state *blit;

   int32_t draw_stamp;

};

/**

 *  Base class for VG objects like paths, images, fonts.

 */

struct vg_object {

   enum vg_object_type type;

   VGHandle handle;

   struct vg_context *ctx;

};

void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);

void vg_free_object(struct vg_object *obj);

VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type);

struct vg_context *vg_create_context(struct pipe_context *pipe,

                                     const void *visual,

                                     struct vg_context *share);

void vg_destroy_context(struct vg_context *ctx);

struct vg_context *vg_current_context(void);

void vg_set_current_context(struct vg_context *ctx);

VGboolean vg_context_is_object_valid(struct vg_context *ctx,

                                     enum vg_object_type type,

                                     VGHandle object);

void vg_context_add_object(struct vg_context *ctx,

                           struct vg_object *obj);

void vg_context_remove_object(struct vg_context *ctx,

                              struct vg_object *obj);

void vg_validate_state(struct vg_context *ctx);

void vg_set_error(struct vg_context *ctx,

                  VGErrorCode code);

struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx);

struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx);

struct pipe_sampler_view *vg_get_surface_mask(struct vg_context *ctx);

VGboolean vg_get_paint_matrix(struct vg_context *ctx,

                              const struct matrix *paint_to_user,

                              const struct matrix *user_to_surface,

                              struct matrix *mat);

static INLINE VGboolean is_aligned_to(const void *ptr, VGbyte alignment)

{

   void *aligned = align_pointer(ptr, alignment);

   return (ptr == aligned) ? VG_TRUE : VG_FALSE;

}

static INLINE VGboolean is_aligned(const void *ptr)

{

   return is_aligned_to(ptr, 4);

}

static INLINE void vg_shift_rectx(VGfloat coords[4],

                                 const VGfloat *bounds,

                                 const VGfloat shift)

{

   coords[0] += shift;

   coords[2] -= shift;

   if (bounds) {

      coords[2] = MIN2(coords[2], bounds[2]);

      /* bound x/y + width/height */

      if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {

         coords[2] = (bounds[0] + bounds[2]) - coords[0];

      }

   }

}

static INLINE void vg_shift_recty(VGfloat coords[4],

                                 const VGfloat *bounds,

                                 const VGfloat shift)

{

   coords[1] += shift;

   coords[3] -= shift;

   if (bounds) {

      coords[3] = MIN2(coords[3], bounds[3]);

      if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {

         coords[3] = (bounds[1] + bounds[3]) - coords[1];

      }

   }

}

static INLINE void vg_bound_rect(VGfloat coords[4],

                                 const VGfloat bounds[4],

                                 VGfloat shift[4])

{

   /* if outside the bounds */

   if (coords[0] > (bounds[0] + bounds[2]) ||

       coords[1] > (bounds[1] + bounds[3]) ||

       (coords[0] + coords[2]) < bounds[0] ||

       (coords[1] + coords[3]) < bounds[1]) {

      coords[0] = 0.f;

      coords[1] = 0.f;

      coords[2] = 0.f;

      coords[3] = 0.f;

      shift[0] = 0.f;

      shift[1] = 0.f;

      return;

   }

   /* bound x */

   if (coords[0] < bounds[0]) {

      shift[0] = bounds[0] - coords[0];

      coords[2] -= shift[0];

      coords[0] = bounds[0];

   } else

      shift[0] = 0.f;

   /* bound y */

   if (coords[1] < bounds[1]) {

      shift[1] = bounds[1] - coords[1];

      coords[3] -= shift[1];

      coords[1] = bounds[1];

   } else

      shift[1] = 0.f;

   shift[2] = bounds[2] - coords[2];

   shift[3] = bounds[3] - coords[3];

   /* bound width/height */

   coords[2] = MIN2(coords[2], bounds[2]);

   coords[3] = MIN2(coords[3], bounds[3]);

   /* bound x/y + width/height */

   if ((coords[0] + coords[2]) > (bounds[0] + bounds[2])) {

      coords[2] = (bounds[0] + bounds[2]) - coords[0];

   }

   if ((coords[1] + coords[3]) > (bounds[1] + bounds[3])) {

      coords[3] = (bounds[1] + bounds[3]) - coords[1];

   }

   /* if outside the bounds */

   if ((coords[0] + coords[2]) < bounds[0] ||

       (coords[1] + coords[3]) < bounds[1]) {

      coords[0] = 0.f;

      coords[1] = 0.f;

      coords[2] = 0.f;

      coords[3] = 0.f;

      return;

   }

}

#endif