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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. */
#ifndef R300_TEXTURE_H
#define R300_TEXTURE_H
#include "pipe/p_video_state.h"
#include "util/u_format.h"
#include "r300_reg.h"
struct r300_texture;
void r300_init_screen_texture_functions(struct pipe_screen* screen);
unsigned r300_texture_get_stride(struct r300_screen* screen,
struct r300_texture* tex, unsigned level);
unsigned r300_texture_get_offset(struct r300_texture* tex, unsigned level,
unsigned zslice, unsigned face);
void r300_texture_reinterpret_format(struct pipe_screen *screen,
struct pipe_texture *tex,
enum pipe_format new_format);
/* Translate a pipe_format into a useful texture format for sampling.
*
* R300_EASY_TX_FORMAT swizzles the texture.
* Note the signature of R300_EASY_TX_FORMAT:
* R300_EASY_TX_FORMAT(B, G, R, A, FORMAT);
*
* The FORMAT specifies how the texture sampler will treat the texture, and
* makes available X, Y, Z, W, ZERO, and ONE for swizzling. */
static INLINE uint32_t r300_translate_texformat(enum pipe_format format)
{
uint32_t result = 0;
const struct util_format_description *desc;
unsigned components = 0, i;
boolean uniform = TRUE;
const uint32_t swizzle_shift[4] = {
R300_TX_FORMAT_R_SHIFT,
R300_TX_FORMAT_G_SHIFT,
R300_TX_FORMAT_B_SHIFT,
R300_TX_FORMAT_A_SHIFT
};
const uint32_t sign_bit[4] = {
R300_TX_FORMAT_SIGNED_X,
R300_TX_FORMAT_SIGNED_Y,
R300_TX_FORMAT_SIGNED_Z,
R300_TX_FORMAT_SIGNED_W,
};
desc = util_format_description(format);
/* Colorspace (return non-RGB formats directly). */
switch (desc->colorspace) {
/* Depth stencil formats. */
case UTIL_FORMAT_COLORSPACE_ZS:
switch (format) {
case PIPE_FORMAT_Z16_UNORM:
return R300_EASY_TX_FORMAT(X, X, X, X, X16);
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_Z24S8_UNORM:
return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
default:
return ~0; /* Unsupported. */
}
/* YUV formats. */
case UTIL_FORMAT_COLORSPACE_YUV:
result |= R300_TX_FORMAT_YUV_TO_RGB;
switch (format) {
case PIPE_FORMAT_YCBCR:
return R300_EASY_TX_FORMAT(X, Y, Z, ONE, YVYU422) | result;
case PIPE_FORMAT_YCBCR_REV:
return R300_EASY_TX_FORMAT(X, Y, Z, ONE, VYUY422) | result;
default:
return ~0; /* Unsupported/unknown. */
}
/* Add gamma correction. */
case UTIL_FORMAT_COLORSPACE_SRGB:
result |= R300_TX_FORMAT_GAMMA;
break;
default:;
}
/* Add swizzle. */
for (i = 0; i < 4; i++) {
switch (desc->swizzle[i]) {
case UTIL_FORMAT_SWIZZLE_X:
case UTIL_FORMAT_SWIZZLE_NONE:
result |= R300_TX_FORMAT_X << swizzle_shift[i];
break;
case UTIL_FORMAT_SWIZZLE_Y:
result |= R300_TX_FORMAT_Y << swizzle_shift[i];
break;
case UTIL_FORMAT_SWIZZLE_Z:
result |= R300_TX_FORMAT_Z << swizzle_shift[i];
break;
case UTIL_FORMAT_SWIZZLE_W:
result |= R300_TX_FORMAT_W << swizzle_shift[i];
break;
case UTIL_FORMAT_SWIZZLE_0:
result |= R300_TX_FORMAT_ZERO << swizzle_shift[i];
break;
case UTIL_FORMAT_SWIZZLE_1:
result |= R300_TX_FORMAT_ONE << swizzle_shift[i];
break;
default:
return ~0; /* Unsupported. */
}
}
/* Compressed formats. */
if (desc->layout == UTIL_FORMAT_LAYOUT_DXT) {
switch (format) {
case PIPE_FORMAT_DXT1_RGB:
case PIPE_FORMAT_DXT1_RGBA:
case PIPE_FORMAT_DXT1_SRGB:
case PIPE_FORMAT_DXT1_SRGBA:
return R300_TX_FORMAT_DXT1 | result;
case PIPE_FORMAT_DXT3_RGBA:
case PIPE_FORMAT_DXT3_SRGBA:
return R300_TX_FORMAT_DXT3 | result;
case PIPE_FORMAT_DXT5_RGBA:
case PIPE_FORMAT_DXT5_SRGBA:
return R300_TX_FORMAT_DXT5 | result;
default:
return ~0; /* Unsupported/unknown. */
}
}
/* Get the number of components. */
for (i = 0; i < 4; i++) {
if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
++components;
}
}
/* Add sign. */
for (i = 0; i < components; i++) {
if (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED) {
result |= sign_bit[i];
}
}
/* See whether the components are of the same size. */
for (i = 1; i < components; i++) {
uniform = uniform && desc->channel[0].size == desc->channel[i].size;
}
/* Non-uniform formats. */
if (!uniform) {
switch (components) {
case 3:
if (desc->channel[0].size == 5 &&
desc->channel[1].size == 6 &&
desc->channel[2].size == 5) {
return R300_TX_FORMAT_Z5Y6X5 | result;
}
if (desc->channel[0].size == 5 &&
desc->channel[1].size == 5 &&
desc->channel[2].size == 6) {
return R300_TX_FORMAT_Z6Y5X5 | result;
}
return ~0; /* Unsupported/unknown. */
case 4:
if (desc->channel[0].size == 5 &&
desc->channel[1].size == 5 &&
desc->channel[2].size == 5 &&
desc->channel[3].size == 1) {
return R300_TX_FORMAT_W1Z5Y5X5 | result;
}
if (desc->channel[0].size == 10 &&
desc->channel[1].size == 10 &&
desc->channel[2].size == 10 &&
desc->channel[3].size == 2) {
return R300_TX_FORMAT_W2Z10Y10X10 | result;
}
}
return ~0; /* Unsupported/unknown. */
}
/* And finally, uniform formats. */
switch (desc->channel[0].type) {
case UTIL_FORMAT_TYPE_UNSIGNED:
case UTIL_FORMAT_TYPE_SIGNED:
if (!desc->channel[0].normalized &&
desc->colorspace != UTIL_FORMAT_COLORSPACE_SRGB) {
return ~0;
}
switch (desc->channel[0].size) {
case 4:
switch (components) {
case 2:
return R300_TX_FORMAT_Y4X4 | result;
case 4:
return R300_TX_FORMAT_W4Z4Y4X4 | result;
}
return ~0;
case 8:
switch (components) {
case 1:
return R300_TX_FORMAT_X8 | result;
case 2:
return R300_TX_FORMAT_Y8X8 | result;
case 4:
return R300_TX_FORMAT_W8Z8Y8X8 | result;
}
return ~0;
case 16:
switch (components) {
case 1:
return R300_TX_FORMAT_X16 | result;
case 2:
return R300_TX_FORMAT_Y16X16 | result;
case 4:
return R300_TX_FORMAT_W16Z16Y16X16 | result;
}
}
return ~0;
/* XXX Enable float textures here. */
#if 0
case UTIL_FORMAT_TYPE_FLOAT:
switch (desc->channel[0].size) {
case 16:
switch (components) {
case 1:
return R300_TX_FORMAT_16F | result;
case 2:
return R300_TX_FORMAT_16F_16F | result;
case 4:
return R300_TX_FORMAT_16F_16F_16F_16F | result;
}
return ~0;
case 32:
switch (components) {
case 1:
return R300_TX_FORMAT_32F | result;
case 2:
return R300_TX_FORMAT_32F_32F | result;
case 4:
return R300_TX_FORMAT_32F_32F_32F_32F | result;
}
}
#endif
}
return ~0; /* Unsupported/unknown. */
}
struct r300_video_surface
{
struct pipe_video_surface base;
struct pipe_texture *tex;
};
static INLINE struct r300_video_surface *
r300_video_surface(struct pipe_video_surface *pvs)
{
return (struct r300_video_surface *)pvs;
}
#ifndef R300_WINSYS_H
boolean r300_get_texture_buffer(struct pipe_screen* screen,
struct pipe_texture* texture,
struct pipe_buffer** buffer,
unsigned* stride);
#endif /* R300_WINSYS_H */
#endif /* R300_TEXTURE_H */
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