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/*
* Copyright © 2012 Intel Corporation
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#include "main/blend.h"
#include "main/mtypes.h"
#include "main/samplerobj.h"
#include "main/texformat.h"
#include "main/teximage.h"
#include "program/prog_parameter.h"
#include "program/prog_instruction.h"
#include "intel_mipmap_tree.h"
#include "intel_batchbuffer.h"
#include "intel_tex.h"
#include "intel_fbo.h"
#include "intel_buffer_objects.h"
#include "intel_image.h"
#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_wm.h"
#include "isl/isl.h"
static uint32_t *
gen8_allocate_surface_state(struct brw_context *brw, uint32_t *out_offset)
{
uint32_t *surf = brw_state_batch(brw, 64, 64, out_offset);
memset(surf, 0, 64);
return surf;
}
/**
* Creates a null surface.
*
* This is used when the shader doesn't write to any color output. An FB
* write to target 0 will still be emitted, because that's how the thread is
* terminated (and computed depth is returned), so we need to have the
* hardware discard the target 0 color output..
*/
static void
gen8_emit_null_surface_state(struct brw_context *brw,
unsigned width,
unsigned height,
unsigned samples,
uint32_t *out_offset)
{
uint32_t *surf = gen8_allocate_surface_state(brw, out_offset);
surf[0] = BRW_SURFACE_NULL << BRW_SURFACE_TYPE_SHIFT |
ISL_FORMAT_B8G8R8A8_UNORM << BRW_SURFACE_FORMAT_SHIFT |
GEN8_SURFACE_TILING_Y;
surf[2] = SET_FIELD(width - 1, GEN7_SURFACE_WIDTH) |
SET_FIELD(height - 1, GEN7_SURFACE_HEIGHT);
}
void
gen8_init_vtable_surface_functions(struct brw_context *brw)
{
brw->vtbl.update_renderbuffer_surface = brw_update_renderbuffer_surface;
brw->vtbl.emit_null_surface_state = gen8_emit_null_surface_state;
}
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