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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2012-2013 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include "pipe/p_state.h"
#include "util/u_string.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "fd2_texture.h"
#include "fd2_util.h"
static enum sq_tex_clamp
tex_clamp(unsigned wrap)
{
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return SQ_TEX_WRAP;
case PIPE_TEX_WRAP_CLAMP:
return SQ_TEX_CLAMP_HALF_BORDER;
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
return SQ_TEX_CLAMP_LAST_TEXEL;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return SQ_TEX_CLAMP_BORDER;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
return SQ_TEX_MIRROR;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
return SQ_TEX_MIRROR_ONCE_HALF_BORDER;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
return SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
return SQ_TEX_MIRROR_ONCE_BORDER;
default:
DBG("invalid wrap: %u", wrap);
return 0;
}
}
static enum sq_tex_filter
tex_filter(unsigned filter)
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST:
return SQ_TEX_FILTER_POINT;
case PIPE_TEX_FILTER_LINEAR:
return SQ_TEX_FILTER_BILINEAR;
default:
DBG("invalid filter: %u", filter);
return 0;
}
}
static void *
fd2_sampler_state_create(struct pipe_context *pctx,
const struct pipe_sampler_state *cso)
{
struct fd2_sampler_stateobj *so = CALLOC_STRUCT(fd2_sampler_stateobj);
if (!so)
return NULL;
so->base = *cso;
/* SQ_TEX0_PITCH() must be OR'd in later when we know the bound texture: */
so->tex0 =
A2XX_SQ_TEX_0_CLAMP_X(tex_clamp(cso->wrap_s)) |
A2XX_SQ_TEX_0_CLAMP_Y(tex_clamp(cso->wrap_t)) |
A2XX_SQ_TEX_0_CLAMP_Z(tex_clamp(cso->wrap_r));
so->tex3 =
A2XX_SQ_TEX_3_XY_MAG_FILTER(tex_filter(cso->mag_img_filter)) |
A2XX_SQ_TEX_3_XY_MIN_FILTER(tex_filter(cso->min_img_filter));
so->tex4 = 0x00000000; /* ??? */
so->tex5 = 0x00000200; /* ??? */
return so;
}
static void
fd2_sampler_states_bind(struct pipe_context *pctx,
enum pipe_shader_type shader, unsigned start,
unsigned nr, void **hwcso)
{
if (!hwcso)
nr = 0;
if (shader == PIPE_SHADER_FRAGMENT) {
struct fd_context *ctx = fd_context(pctx);
/* on a2xx, since there is a flat address space for textures/samplers,
* a change in # of fragment textures/samplers will trigger patching and
* re-emitting the vertex shader:
*/
if (nr != ctx->fragtex.num_samplers)
ctx->dirty |= FD_DIRTY_TEXSTATE;
}
fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
}
static struct pipe_sampler_view *
fd2_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
const struct pipe_sampler_view *cso)
{
struct fd2_pipe_sampler_view *so = CALLOC_STRUCT(fd2_pipe_sampler_view);
struct fd_resource *rsc = fd_resource(prsc);
if (!so)
return NULL;
so->base = *cso;
pipe_reference(NULL, &prsc->reference);
so->base.texture = prsc;
so->base.reference.count = 1;
so->base.context = pctx;
so->fmt = fd2_pipe2surface(cso->format);
so->tex0 = A2XX_SQ_TEX_0_PITCH(rsc->slices[0].pitch);
so->tex2 =
A2XX_SQ_TEX_2_HEIGHT(prsc->height0 - 1) |
A2XX_SQ_TEX_2_WIDTH(prsc->width0 - 1);
so->tex3 = fd2_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
cso->swizzle_b, cso->swizzle_a);
return &so->base;
}
/* map gallium sampler-id to hw const-idx.. adreno uses a flat address
* space of samplers (const-idx), so we need to map the gallium sampler-id
* which is per-shader to a global const-idx space.
*
* Fragment shader sampler maps directly to const-idx, and vertex shader
* is offset by the # of fragment shader samplers. If the # of fragment
* shader samplers changes, this shifts the vertex shader indexes.
*
* TODO maybe we can do frag shader 0..N and vert shader N..0 to avoid
* this??
*/
unsigned
fd2_get_const_idx(struct fd_context *ctx, struct fd_texture_stateobj *tex,
unsigned samp_id)
{
if (tex == &ctx->fragtex)
return samp_id;
return samp_id + ctx->fragtex.num_samplers;
}
void
fd2_texture_init(struct pipe_context *pctx)
{
pctx->create_sampler_state = fd2_sampler_state_create;
pctx->bind_sampler_states = fd2_sampler_states_bind;
pctx->create_sampler_view = fd2_sampler_view_create;
pctx->set_sampler_views = fd_set_sampler_views;
}
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