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/*
* Copyright (c) 2014 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/context.h"
#include "main/blend.h"
#include "main/mtypes.h"
#include "main/samplerobj.h"
#include "main/texformat.h"
#include "program/prog_parameter.h"
#include "intel_mipmap_tree.h"
#include "intel_batchbuffer.h"
#include "intel_tex.h"
#include "intel_fbo.h"
#include "intel_buffer_objects.h"
#include "brw_context.h"
#include "brw_state.h"
#include "brw_defines.h"
#include "brw_wm.h"
/**
* Sets up a surface state structure to point at the given region.
* While it is only used for the front/back buffer currently, it should be
* usable for further buffers when doing ARB_draw_buffer support.
*/
static void
gen6_update_renderbuffer_surface(struct brw_context *brw,
struct gl_renderbuffer *rb,
bool layered,
unsigned int unit)
{
struct gl_context *ctx = &brw->ctx;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
struct intel_mipmap_tree *mt = irb->mt;
uint32_t *surf;
uint32_t format = 0;
/* _NEW_BUFFERS */
mesa_format rb_format = _mesa_get_render_format(ctx, intel_rb_format(irb));
uint32_t surftype;
int depth = MAX2(irb->layer_count, 1);
const GLenum gl_target =
rb->TexImage ? rb->TexImage->TexObject->Target : GL_TEXTURE_2D;
uint32_t surf_index =
brw->wm.prog_data->binding_table.render_target_start + unit;
intel_miptree_used_for_rendering(irb->mt);
surf = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 6 * 4, 32,
&brw->wm.base.surf_offset[surf_index]);
format = brw->render_target_format[rb_format];
if (unlikely(!brw->format_supported_as_render_target[rb_format])) {
_mesa_problem(ctx, "%s: renderbuffer format %s unsupported\n",
__FUNCTION__, _mesa_get_format_name(rb_format));
}
switch (gl_target) {
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_CUBE_MAP:
surftype = BRW_SURFACE_2D;
depth *= 6;
break;
case GL_TEXTURE_3D:
depth = MAX2(irb->mt->logical_depth0, 1);
/* fallthrough */
default:
surftype = translate_tex_target(gl_target);
break;
}
const int min_array_element = layered ? 0 : irb->mt_layer;
surf[0] = SET_FIELD(surftype, BRW_SURFACE_TYPE) |
SET_FIELD(format, BRW_SURFACE_FORMAT);
/* reloc */
assert(mt->offset % mt->cpp == 0);
surf[1] = mt->bo->offset64 + mt->offset;
/* In the gen6 PRM Volume 1 Part 1: Graphics Core, Section 7.18.3.7.1
* (Surface Arrays For all surfaces other than separate stencil buffer):
*
* "[DevSNB] Errata: Sampler MSAA Qpitch will be 4 greater than the value
* calculated in the equation above , for every other odd Surface Height
* starting from 1 i.e. 1,5,9,13"
*
* Since this Qpitch errata only impacts the sampler, we have to adjust the
* input for the rendering surface to achieve the same qpitch. For the
* affected heights, we increment the height by 1 for the rendering
* surface.
*/
int height0 = irb->mt->logical_height0;
if (brw->gen == 6 && irb->mt->num_samples > 1 && (height0 % 4) == 1)
height0++;
surf[2] = SET_FIELD(mt->logical_width0 - 1, BRW_SURFACE_WIDTH) |
SET_FIELD(height0 - 1, BRW_SURFACE_HEIGHT) |
SET_FIELD(irb->mt_level - irb->mt->first_level, BRW_SURFACE_LOD);
surf[3] = brw_get_surface_tiling_bits(mt->tiling) |
SET_FIELD(depth - 1, BRW_SURFACE_DEPTH) |
SET_FIELD(mt->pitch - 1, BRW_SURFACE_PITCH);
surf[4] = brw_get_surface_num_multisamples(mt->num_samples) |
SET_FIELD(min_array_element, BRW_SURFACE_MIN_ARRAY_ELEMENT) |
SET_FIELD(depth - 1, BRW_SURFACE_RENDER_TARGET_VIEW_EXTENT);
surf[5] = (mt->align_h == 4 ? BRW_SURFACE_VERTICAL_ALIGN_ENABLE : 0);
drm_intel_bo_emit_reloc(brw->batch.bo,
brw->wm.base.surf_offset[surf_index] + 4,
mt->bo,
surf[1] - mt->bo->offset64,
I915_GEM_DOMAIN_RENDER,
I915_GEM_DOMAIN_RENDER);
}
void
gen6_init_vtable_surface_functions(struct brw_context *brw)
{
gen4_init_vtable_surface_functions(brw);
brw->vtbl.update_renderbuffer_surface = gen6_update_renderbuffer_surface;
}
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