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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 "r300_texture.h"
static int minify(int i)
{
return MAX2(1, i >> 1);
}
static void r300_setup_texture_state(struct r300_texture* tex,
unsigned width,
unsigned height,
unsigned pitch)
{
struct r300_texture_state* state = &tex->state;
state->format0 = R300_TX_WIDTH((width - 1) & 0x7ff) |
R300_TX_HEIGHT((height - 1) & 0x7ff) | R300_TX_PITCH_EN;
/* XXX */
state->format1 = R300_TX_FORMAT_A8R8G8B8;
state->format2 = pitch - 1;
/* XXX
if (width > 2048) {
state->pitch |= R300_TXWIDTH_11;
}
if (height > 2048) {
state->pitch |= R300_TXHEIGHT_11;
} */
}
static void r300_setup_miptree(struct r300_texture* tex)
{
struct pipe_texture* base = &tex->tex;
int stride, size, offset;
int i;
for (i = 0; i <= base->last_level; i++) {
if (i > 0) {
base->width[i] = minify(base->width[i-1]);
base->height[i] = minify(base->height[i-1]);
base->depth[i] = minify(base->depth[i-1]);
}
base->nblocksx[i] = pf_get_nblocksx(&base->block, base->width[i]);
base->nblocksy[i] = pf_get_nblocksy(&base->block, base->width[i]);
/* Radeons enjoy things in multiples of 32. */
/* XXX this can be 32 when POT */
stride = (base->nblocksx[i] * base->block.size + 63) & ~63;
size = stride * base->nblocksy[i] * base->depth[i];
tex->offset[i] = (tex->size + 63) & ~63;
tex->size = tex->offset[i] + size;
if (i == 0) {
tex->stride = stride;
}
}
}
/* Create a new texture. */
static struct pipe_texture*
r300_texture_create(struct pipe_screen* screen,
const struct pipe_texture* template)
{
/* XXX struct r300_screen* r300screen = r300_screen(screen); */
struct r300_texture* tex = CALLOC_STRUCT(r300_texture);
if (!tex) {
return NULL;
}
tex->tex = *template;
pipe_reference_init(&tex->tex.reference, 1);
tex->tex.screen = screen;
r300_setup_miptree(tex);
/* XXX */
r300_setup_texture_state(tex, tex->tex.width[0], tex->tex.height[0],
tex->tex.width[0]);
tex->buffer = screen->buffer_create(screen, 64,
PIPE_BUFFER_USAGE_PIXEL,
tex->size);
if (!tex->buffer) {
FREE(tex);
return NULL;
}
return (struct pipe_texture*)tex;
}
static void r300_texture_destroy(struct pipe_texture* texture)
{
struct r300_texture* tex = (struct r300_texture*)texture;
pipe_buffer_reference(&tex->buffer, NULL);
FREE(tex);
}
static struct pipe_surface* r300_get_tex_surface(struct pipe_screen* screen,
struct pipe_texture* texture,
unsigned face,
unsigned level,
unsigned zslice,
unsigned flags)
{
struct r300_texture* tex = (struct r300_texture*)texture;
struct pipe_surface* surface = CALLOC_STRUCT(pipe_surface);
unsigned offset;
/* XXX this is certainly dependent on tex target */
offset = tex->offset[level];
if (surface) {
pipe_reference_init(&surface->reference, 1);
pipe_texture_reference(&surface->texture, texture);
surface->format = texture->format;
surface->width = texture->width[level];
surface->height = texture->height[level];
surface->offset = offset;
surface->usage = flags;
}
return surface;
}
static void r300_tex_surface_destroy(struct pipe_surface* s)
{
pipe_texture_reference(&s->texture, NULL);
FREE(s);
}
static struct pipe_texture*
r300_texture_blanket(struct pipe_screen* screen,
const struct pipe_texture* base,
const unsigned* stride,
struct pipe_buffer* buffer)
{
struct r300_texture* tex;
if (base->target != PIPE_TEXTURE_2D ||
base->last_level != 0 ||
base->depth[0] != 1) {
return NULL;
}
tex = CALLOC_STRUCT(r300_texture);
if (!tex) {
return NULL;
}
tex->tex = *base;
pipe_reference_init(&tex->tex.reference, 1);
tex->tex.screen = screen;
tex->stride = *stride;
r300_setup_texture_state(tex, tex->tex.width[0], tex->tex.height[0],
tex->stride);
pipe_buffer_reference(&tex->buffer, buffer);
return (struct pipe_texture*)tex;
}
void r300_init_screen_texture_functions(struct pipe_screen* screen)
{
screen->texture_create = r300_texture_create;
screen->texture_destroy = r300_texture_destroy;
screen->get_tex_surface = r300_get_tex_surface;
screen->tex_surface_destroy = r300_tex_surface_destroy;
screen->texture_blanket = r300_texture_blanket;
}
boolean r300_get_texture_buffer(struct pipe_texture* texture,
struct pipe_buffer** buffer,
unsigned* stride)
{
struct r300_texture* tex = (struct r300_texture*)texture;
if (!tex) {
return FALSE;
}
pipe_buffer_reference(buffer, tex->buffer);
if (stride) {
*stride = tex->stride;
}
return TRUE;
}
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