src/gallium/drivers/cell/ppu/cell_clear.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * Authors
  30  *  Brian Paul
  31  */
  32
  33 #include <stdio.h>
  34 #include <assert.h>
  35 #include <stdint.h>
  36 #include "util/u_inlines.h"
  37 #include "util/u_memory.h"
  38 #include "util/u_pack_color.h"
  39 #include "cell/common.h"
  40 #include "cell_clear.h"
  41 #include "cell_context.h"
  42 #include "cell_batch.h"
  43 #include "cell_flush.h"
  44 #include "cell_spu.h"
  45 #include "cell_state.h"
  46
  47
  48 /**
  49  * Called via pipe->clear()
  50  */
  51 void
  52 cell_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
  53            double depth, unsigned stencil)
  54 {
  55    struct cell_context *cell = cell_context(pipe);
  56
  57    if (cell->dirty)
  58       cell_update_derived(cell);
  59
  60    if (buffers & PIPE_CLEAR_COLOR) {
  61       uint surfIndex = 0;
  62       union util_color uc;
  63
  64       util_pack_color(rgba, cell->framebuffer.cbufs[0]->format, &uc);
  65
  66       /* Build a CLEAR command and place it in the current batch buffer */
  67       STATIC_ASSERT(sizeof(struct cell_command_clear_surface) % 16 == 0);
  68       struct cell_command_clear_surface *clr
  69          = (struct cell_command_clear_surface *)
  70          cell_batch_alloc16(cell, sizeof(*clr));
  71       clr->opcode[0] = CELL_CMD_CLEAR_SURFACE;
  72       clr->surface = surfIndex;
  73       clr->value = uc.ui;
  74    }
  75
  76    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
  77       uint surfIndex = 1;
  78       uint clearValue;
  79
  80       clearValue = util_pack_z_stencil(cell->framebuffer.zsbuf->format,
  81                                        depth, stencil);
  82
  83       /* Build a CLEAR command and place it in the current batch buffer */
  84       STATIC_ASSERT(sizeof(struct cell_command_clear_surface) % 16 == 0);
  85       struct cell_command_clear_surface *clr
  86          = (struct cell_command_clear_surface *)
  87          cell_batch_alloc16(cell, sizeof(*clr));
  88       clr->opcode[0] = CELL_CMD_CLEAR_SURFACE;
  89       clr->surface = surfIndex;
  90       clr->value = clearValue;
  91    }
  92 }