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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 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 "util/u_format.h"
#include "fd3_texture.h"
#include "fd3_util.h"
static enum a3xx_tex_clamp
tex_clamp(unsigned wrap)
{
/* hardware probably supports more, but we can't coax all the
* wrap/clamp modes out of the GLESv2 blob driver.
*
* TODO once we have basics working, go back and just try
* different values and see what happens
*/
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return A3XX_TEX_REPEAT;
case PIPE_TEX_WRAP_CLAMP:
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
return A3XX_TEX_CLAMP_TO_EDGE;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return A3XX_TEX_CLAMP_TO_BORDER;
case PIPE_TEX_WRAP_MIRROR_CLAMP:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
return A3XX_TEX_MIRROR_CLAMP;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
return A3XX_TEX_MIRROR_REPEAT;
default:
DBG("invalid wrap: %u", wrap);
return 0;
}
}
static enum a3xx_tex_filter
tex_filter(unsigned filter)
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST:
return A3XX_TEX_NEAREST;
case PIPE_TEX_FILTER_LINEAR:
return A3XX_TEX_LINEAR;
default:
DBG("invalid filter: %u", filter);
return 0;
}
}
static void *
fd3_sampler_state_create(struct pipe_context *pctx,
const struct pipe_sampler_state *cso)
{
struct fd3_sampler_stateobj *so = CALLOC_STRUCT(fd3_sampler_stateobj);
bool miplinear = false;
if (!so)
return NULL;
if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
miplinear = true;
so->base = *cso;
so->texsamp0 =
COND(!cso->normalized_coords, A3XX_TEX_SAMP_0_UNNORM_COORDS) |
COND(miplinear, A3XX_TEX_SAMP_0_MIPFILTER_LINEAR) |
A3XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter)) |
A3XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter)) |
A3XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s)) |
A3XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t)) |
A3XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r));
if (cso->compare_mode)
so->texsamp0 |= A3XX_TEX_SAMP_0_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
so->texsamp1 =
A3XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
A3XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
} else {
so->texsamp1 = 0x00000000;
}
return so;
}
static enum a3xx_tex_type
tex_type(unsigned target)
{
switch (target) {
default:
assert(0);
case PIPE_BUFFER:
case PIPE_TEXTURE_1D:
case PIPE_TEXTURE_1D_ARRAY:
return A3XX_TEX_1D;
case PIPE_TEXTURE_RECT:
case PIPE_TEXTURE_2D:
case PIPE_TEXTURE_2D_ARRAY:
return A3XX_TEX_2D;
case PIPE_TEXTURE_3D:
return A3XX_TEX_3D;
case PIPE_TEXTURE_CUBE:
case PIPE_TEXTURE_CUBE_ARRAY:
return A3XX_TEX_CUBE;
}
}
static struct pipe_sampler_view *
fd3_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
const struct pipe_sampler_view *cso)
{
struct fd3_pipe_sampler_view *so = CALLOC_STRUCT(fd3_pipe_sampler_view);
struct fd_resource *rsc = fd_resource(prsc);
unsigned lvl = cso->u.tex.first_level;
unsigned miplevels = cso->u.tex.last_level - lvl;
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->tex_resource = rsc;
so->texconst0 =
A3XX_TEX_CONST_0_TYPE(tex_type(prsc->target)) |
A3XX_TEX_CONST_0_FMT(fd3_pipe2tex(cso->format)) |
A3XX_TEX_CONST_0_MIPLVLS(miplevels) |
fd3_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
cso->swizzle_b, cso->swizzle_a);
if (util_format_is_srgb(cso->format))
so->texconst0 |= A3XX_TEX_CONST_0_SRGB;
so->texconst1 =
A3XX_TEX_CONST_1_FETCHSIZE(fd3_pipe2fetchsize(cso->format)) |
A3XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
A3XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
/* when emitted, A3XX_TEX_CONST_2_INDX() must be OR'd in: */
so->texconst2 =
A3XX_TEX_CONST_2_PITCH(rsc->slices[lvl].pitch * rsc->cpp);
so->texconst3 = 0x00000000; /* ??? */
return &so->base;
}
void
fd3_texture_init(struct pipe_context *pctx)
{
pctx->create_sampler_state = fd3_sampler_state_create;
pctx->create_sampler_view = fd3_sampler_view_create;
}
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