/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2009 Marek Olšák <maraeo@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 "draw/draw_context.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "r300_context.h"
#include "r300_fs.h"
#include "r300_hyperz.h"
#include "r300_screen.h"
#include "r300_shader_semantics.h"
#include "r300_state_derived.h"
#include "r300_state_inlines.h"
#include "r300_texture.h"
#include "r300_vs.h"
/* r300_state_derived: Various bits of state which are dependent upon
* currently bound CSO data. */
enum r300_rs_swizzle {
SWIZ_XYZW = 0,
SWIZ_X001,
SWIZ_XY01,
SWIZ_0001,
};
enum r300_rs_col_write_type {
WRITE_COLOR = 0,
WRITE_FACE
};
static void r300_draw_emit_attrib(struct r300_context* r300,
enum attrib_emit emit,
enum interp_mode interp,
int index)
{
struct r300_vertex_shader* vs = r300->vs_state.state;
struct tgsi_shader_info* info = &vs->info;
int output;
output = draw_find_shader_output(r300->draw,
info->output_semantic_name[index],
info->output_semantic_index[index]);
draw_emit_vertex_attr(&r300->vertex_info, emit, interp, output);
}
static void r300_draw_emit_all_attribs(struct r300_context* r300)
{
struct r300_vertex_shader* vs = r300->vs_state.state;
struct r300_shader_semantics* vs_outputs = &vs->outputs;
int i, gen_count;
/* Position. */
if (vs_outputs->pos != ATTR_UNUSED) {
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_PERSPECTIVE,
vs_outputs->pos);
} else {
assert(0);
}
/* Point size. */
if (vs_outputs->psize != ATTR_UNUSED) {
r300_draw_emit_attrib(r300, EMIT_1F_PSIZE, INTERP_POS,
vs_outputs->psize);
}
/* Colors. */
for (i = 0; i < ATTR_COLOR_COUNT; i++) {
if (vs_outputs->color[i] != ATTR_UNUSED) {
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_LINEAR,
vs_outputs->color[i]);
}
}
/* Back-face colors. */
for (i = 0; i < ATTR_COLOR_COUNT; i++) {
if (vs_outputs->bcolor[i] != ATTR_UNUSED) {
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_LINEAR,
vs_outputs->bcolor[i]);
}
}
/* Texture coordinates. */
/* Only 8 generic vertex attributes can be used. If there are more,
* they won't be rasterized. */
gen_count = 0;
for (i = 0; i < ATTR_GENERIC_COUNT && gen_count < 8; i++) {
if (vs_outputs->generic[i] != ATTR_UNUSED &&
!(r300->sprite_coord_enable & (1 << i))) {
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_PERSPECTIVE,
vs_outputs->generic[i]);
gen_count++;
}
}
/* Fog coordinates. */
if (gen_count < 8 && vs_outputs->fog != ATTR_UNUSED) {
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_PERSPECTIVE,
vs_outputs->fog);
gen_count++;
}
/* WPOS. */
if (r300_fs(r300)->shader->inputs.wpos != ATTR_UNUSED && gen_count < 8) {
DBG(r300, DBG_SWTCL, "draw_emit_attrib: WPOS, index: %i\n",
vs_outputs->wpos);
r300_draw_emit_attrib(r300, EMIT_4F, INTERP_PERSPECTIVE,
vs_outputs->wpos);
}
}
/* Update the PSC tables for SW TCL, using Draw. */
static void r300_swtcl_vertex_psc(struct r300_context *r300)
{
struct r300_vertex_stream_state *vstream = r300->vertex_stream_state.state;
struct vertex_info *vinfo = &r300->vertex_info;
uint16_t type, swizzle;
enum pipe_format format;
unsigned i, attrib_count;
int* vs_output_tab = r300->stream_loc_notcl;
memset(vstream, 0, sizeof(struct r300_vertex_stream_state));
/* For each Draw attribute, route it to the fragment shader according
* to the vs_output_tab. */
attrib_count = vinfo->num_attribs;
DBG(r300, DBG_SWTCL, "r300: attrib count: %d\n", attrib_count);
for (i = 0; i < attrib_count; i++) {
if (vs_output_tab[i] == -1) {
assert(0);
abort();
}
format = draw_translate_vinfo_format(vinfo->attrib[i].emit);
DBG(r300, DBG_SWTCL,
"r300: swtcl_vertex_psc [%i] <- %s\n",
vs_output_tab[i], util_format_short_name(format));
/* Obtain the type of data in this attribute. */
type = r300_translate_vertex_data_type(format);
if (type == R300_INVALID_FORMAT) {
fprintf(stderr, "r300: Bad vertex format %s.\n",
util_format_short_name(format));
assert(0);
abort();
}
type |= vs_output_tab[i] << R300_DST_VEC_LOC_SHIFT;
/* Obtain the swizzle for this attribute. Note that the default
* swizzle in the hardware is not XYZW! */
swizzle = r300_translate_vertex_data_swizzle(format);
/* Add the attribute to the PSC table. */
if (i & 1) {
vstream->vap_prog_stream_cntl[i >> 1] |= type << 16;
vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle << 16;
} else {
vstream->vap_prog_stream_cntl[i >> 1] |= type;
vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle;
}
}
/* Set the last vector in the PSC. */
if (i) {
i -= 1;
}
vstream->vap_prog_stream_cntl[i >> 1] |=
(R300_LAST_VEC << (i & 1 ? 16 : 0));
vstream->count = (i >> 1) + 1;
r300->vertex_stream_state.dirty = TRUE;
r300->vertex_stream_state.size = (1 + vstream->count) * 2;
}
static void r300_rs_col(struct r300_rs_block* rs, int id, int ptr,
enum r300_rs_swizzle swiz)
{
rs->ip[id] |= R300_RS_COL_PTR(ptr);
if (swiz == SWIZ_0001) {
rs->ip[id] |= R300_RS_COL_FMT(R300_RS_COL_FMT_0001);
} else {
rs->ip[id] |= R300_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
}
rs->inst[id] |= R300_RS_INST_COL_ID(id);
}
static void r300_rs_col_write(struct r300_rs_block* rs, int id, int fp_offset,
enum r300_rs_col_write_type type)
{
assert(type == WRITE_COLOR);
rs->inst[id] |= R300_RS_INST_COL_CN_WRITE |
R300_RS_INST_COL_ADDR(fp_offset);
}
static void r300_rs_tex(struct r300_rs_block* rs, int id, int ptr,
enum r300_rs_swizzle swiz)
{
if (swiz == SWIZ_X001) {
rs->ip[id] |= R300_RS_TEX_PTR(ptr) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
R300_RS_SEL_T(R300_RS_SEL_K0) |
R300_RS_SEL_R(R300_RS_SEL_K0) |
R300_RS_SEL_Q(R300_RS_SEL_K1);
} else if (swiz == SWIZ_XY01) {
rs->ip[id] |= R300_RS_TEX_PTR(ptr) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
R300_RS_SEL_T(R300_RS_SEL_C1) |
R300_RS_SEL_R(R300_RS_SEL_K0) |
R300_RS_SEL_Q(R300_RS_SEL_K1);
} else {
rs->ip[id] |= R300_RS_TEX_PTR(ptr) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
R300_RS_SEL_T(R300_RS_SEL_C1) |
R300_RS_SEL_R(R300_RS_SEL_C2) |
R300_RS_SEL_Q(R300_RS_SEL_C3);
}
rs->inst[id] |= R300_RS_INST_TEX_ID(id);
}
static void r300_rs_tex_write(struct r300_rs_block* rs, int id, int fp_offset)
{
rs->inst[id] |= R300_RS_INST_TEX_CN_WRITE |
R300_RS_INST_TEX_ADDR(fp_offset);
}
static void r500_rs_col(struct r300_rs_block* rs, int id, int ptr,
enum r300_rs_swizzle swiz)
{
rs->ip[id] |= R500_RS_COL_PTR(ptr);
if (swiz == SWIZ_0001) {
rs->ip[id] |= R500_RS_COL_FMT(R300_RS_COL_FMT_0001);
} else {
rs->ip[id] |= R500_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
}
rs->inst[id] |= R500_RS_INST_COL_ID(id);
}
static void r500_rs_col_write(struct r300_rs_block* rs, int id, int fp_offset,
enum r300_rs_col_write_type type)
{
if (type == WRITE_FACE)
rs->inst[id] |= R500_RS_INST_COL_CN_WRITE_BACKFACE |
R500_RS_INST_COL_ADDR(fp_offset);
else
rs->inst[id] |= R500_RS_INST_COL_CN_WRITE |
R500_RS_INST_COL_ADDR(fp_offset);
}
static void r500_rs_tex(struct r300_rs_block* rs, int id, int ptr,
enum r300_rs_swizzle swiz)
{
if (swiz == SWIZ_X001) {
rs->ip[id] |= R500_RS_SEL_S(ptr) |
R500_RS_SEL_T(R500_RS_IP_PTR_K0) |
R500_RS_SEL_R(R500_RS_IP_PTR_K0) |
R500_RS_SEL_Q(R500_RS_IP_PTR_K1);
} else if (swiz == SWIZ_XY01) {
rs->ip[id] |= R500_RS_SEL_S(ptr) |
R500_RS_SEL_T(ptr + 1) |
R500_RS_SEL_R(R500_RS_IP_PTR_K0) |
R500_RS_SEL_Q(R500_RS_IP_PTR_K1);
} else {
rs->ip[id] |= R500_RS_SEL_S(ptr) |
R500_RS_SEL_T(ptr + 1) |
R500_RS_SEL_R(ptr + 2) |
R500_RS_SEL_Q(ptr + 3);
}
rs->inst[id] |= R500_RS_INST_TEX_ID(id);
}
static void r500_rs_tex_write(struct r300_rs_block* rs, int id, int fp_offset)
{
rs->inst[id] |= R500_RS_INST_TEX_CN_WRITE |
R500_RS_INST_TEX_ADDR(fp_offset);
}
/* Set up the RS block.
*
* This is the part of the chipset that is responsible for linking vertex
* and fragment shaders and stuffed texture coordinates.
*
* The rasterizer reads data from VAP, which produces vertex shader outputs,
* and GA, which produces stuffed texture coordinates. VAP outputs have
* precedence over GA. All outputs must be rasterized otherwise it locks up.
* If there are more outputs rasterized than is set in VAP/GA, it locks up
* too. The funky part is that this info has been pretty much obtained by trial
* and error. */
static void r300_update_rs_block(struct r300_context *r300)
{
struct r300_vertex_shader *vs = r300->vs_state.state;
struct r300_shader_semantics *vs_outputs = &vs->outputs;
struct r300_shader_semantics *fs_inputs = &r300_fs(r300)->shader->inputs;
struct r300_rs_block rs = {0};
int i, col_count = 0, tex_count = 0, fp_offset = 0, count, loc = 0, tex_ptr = 0;
void (*rX00_rs_col)(struct r300_rs_block*, int, int, enum r300_rs_swizzle);
void (*rX00_rs_col_write)(struct r300_rs_block*, int, int, enum r300_rs_col_write_type);
void (*rX00_rs_tex)(struct r300_rs_block*, int, int, enum r300_rs_swizzle);
void (*rX00_rs_tex_write)(struct r300_rs_block*, int, int);
boolean any_bcolor_used = vs_outputs->bcolor[0] != ATTR_UNUSED ||
vs_outputs->bcolor[1] != ATTR_UNUSED;
int *stream_loc_notcl = r300->stream_loc_notcl;
uint32_t stuffing_enable = 0;
if (r300->screen->caps.is_r500) {
rX00_rs_col = r500_rs_col;
rX00_rs_col_write = r500_rs_col_write;
rX00_rs_tex = r500_rs_tex;
rX00_rs_tex_write = r500_rs_tex_write;
} else {
rX00_rs_col = r300_rs_col;
rX00_rs_col_write = r300_rs_col_write;
rX00_rs_tex = r300_rs_tex;
rX00_rs_tex_write = r300_rs_tex_write;
}
/* 0x5555 copied from classic, which means:
* Select user color 0 for COLOR0 up to COLOR7.
* What the hell does that mean? */
rs.vap_vtx_state_cntl = 0x5555;
/* The position is always present in VAP. */
rs.vap_vsm_vtx_assm |= R300_INPUT_CNTL_POS;
rs.vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
stream_loc_notcl[loc++] = 0;
/* Set up the point size in VAP. */
if (vs_outputs->psize != ATTR_UNUSED) {
rs.vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
stream_loc_notcl[loc++] = 1;
}
/* Set up and rasterize colors. */
for (i = 0; i < ATTR_COLOR_COUNT; i++) {
if (vs_outputs->color[i] != ATTR_UNUSED || any_bcolor_used ||
vs_outputs->color[1] != ATTR_UNUSED) {
/* Set up the color in VAP. */
rs.vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
rs.vap_out_vtx_fmt[0] |=
R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i;
stream_loc_notcl[loc++] = 2 + i;
/* Rasterize it. */
rX00_rs_col(&rs, col_count, col_count, SWIZ_XYZW);
/* Write it to the FS input register if it's needed by the FS. */
if (fs_inputs->color[i] != ATTR_UNUSED) {
rX00_rs_col_write(&rs, col_count, fp_offset, WRITE_COLOR);
fp_offset++;
DBG(r300, DBG_RS,
"r300: Rasterized color %i written to FS.\n", i);
} else {
DBG(r300, DBG_RS, "r300: Rasterized color %i unused.\n", i);
}
col_count++;
} else {
/* Skip the FS input register, leave it uninitialized. */
/* If we try to set it to (0,0,0,1), it will lock up. */
if (fs_inputs->color[i] != ATTR_UNUSED) {
fp_offset++;
DBG(r300, DBG_RS, "r300: FS input color %i unassigned%s.\n",
i);
}
}
}
/* Set up back-face colors. The rasterizer will do the color selection
* automatically. */
if (any_bcolor_used) {
if (r300->two_sided_color) {
/* Rasterize as back-face colors. */
for (i = 0; i < ATTR_COLOR_COUNT; i++) {
rs.vap_vsm_vtx_assm |= R300_INPUT_CNTL_COLOR;
rs.vap_out_vtx_fmt[0] |= R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << (2+i);
stream_loc_notcl[loc++] = 4 + i;
}
} else {
/* Rasterize two fake texcoords to prevent from the two-sided color
* selection. */
/* XXX Consider recompiling the vertex shader to save 2 RS units. */
for (i = 0; i < 2; i++) {
rs.vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << tex_count);
rs.vap_out_vtx_fmt[1] |= (4 << (3 * tex_count));
stream_loc_notcl[loc++] = 6 + tex_count;
/* Rasterize it. */
rX00_rs_tex(&rs, tex_count, tex_ptr, SWIZ_XYZW);
tex_count++;
tex_ptr += 4;
}
}
}
/* gl_FrontFacing.
* Note that we can use either the two-sided color selection based on
* the front and back vertex shader colors, or gl_FrontFacing,
* but not both! It locks up otherwise.
*
* In Direct3D 9, the two-sided color selection can be used
* with shaders 2.0 only, while gl_FrontFacing can be used
* with shaders 3.0 only. The hardware apparently hasn't been designed
* to support both at the same time. */
if (r300->screen->caps.is_r500 && fs_inputs->face != ATTR_UNUSED &&
!(any_bcolor_used && r300->two_sided_color)) {
rX00_rs_col(&rs, col_count, col_count, SWIZ_XYZW);
rX00_rs_col_write(&rs, col_count, fp_offset, WRITE_FACE);
fp_offset++;
col_count++;
DBG(r300, DBG_RS, "r300: Rasterized FACE written to FS.\n");
}
/* Rasterize texture coordinates. */
for (i = 0; i < ATTR_GENERIC_COUNT && tex_count < 8; i++) {
bool sprite_coord = false;
if (fs_inputs->generic[i] != ATTR_UNUSED) {
sprite_coord = !!(r300->sprite_coord_enable & (1 << i));
}
if (vs_outputs->generic[i] != ATTR_UNUSED || sprite_coord) {
if (!sprite_coord) {
/* Set up the texture coordinates in VAP. */
rs.vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << tex_count);
rs.vap_out_vtx_fmt[1] |= (4 << (3 * tex_count));
stream_loc_notcl[loc++] = 6 + tex_count;
} else
stuffing_enable |=
R300_GB_TEX_ST << (R300_GB_TEX0_SOURCE_SHIFT + (tex_count*2));
/* Rasterize it. */
rX00_rs_tex(&rs, tex_count, tex_ptr,
sprite_coord ? SWIZ_XY01 : SWIZ_XYZW);
/* Write it to the FS input register if it's needed by the FS. */
if (fs_inputs->generic[i] != ATTR_UNUSED) {
rX00_rs_tex_write(&rs, tex_count, fp_offset);
fp_offset++;
DBG(r300, DBG_RS,
"r300: Rasterized generic %i written to FS%s in texcoord %d.\n",
i, sprite_coord ? " (sprite coord)" : "", tex_count);
} else {
DBG(r300, DBG_RS,
"r300: Rasterized generic %i unused%s.\n",
i, sprite_coord ? " (sprite coord)" : "");
}
tex_count++;
tex_ptr += sprite_coord ? 2 : 4;
} else {
/* Skip the FS input register, leave it uninitialized. */
/* If we try to set it to (0,0,0,1), it will lock up. */
if (fs_inputs->generic[i] != ATTR_UNUSED) {
fp_offset++;
DBG(r300, DBG_RS, "r300: FS input generic %i unassigned%s.\n",
i, sprite_coord ? " (sprite coord)" : "");
}
}
}
if (DBG_ON(r300, DBG_RS)) {
for (; i < ATTR_GENERIC_COUNT; i++) {
if (fs_inputs->generic[i] != ATTR_UNUSED) {
DBG(r300, DBG_RS,
"r300: FS input generic %i unassigned.\n", i);
}
}
}
/* Rasterize fog coordinates. */
if (vs_outputs->fog != ATTR_UNUSED && tex_count < 8) {
/* Set up the fog coordinates in VAP. */
rs.vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << tex_count);
rs.vap_out_vtx_fmt[1] |= (4 << (3 * tex_count));
stream_loc_notcl[loc++] = 6 + tex_count;
/* Rasterize it. */
rX00_rs_tex(&rs, tex_count, tex_ptr, SWIZ_X001);
/* Write it to the FS input register if it's needed by the FS. */
if (fs_inputs->fog != ATTR_UNUSED) {
rX00_rs_tex_write(&rs, tex_count, fp_offset);
fp_offset++;
DBG(r300, DBG_RS, "r300: Rasterized fog written to FS.\n");
} else {
DBG(r300, DBG_RS, "r300: Rasterized fog unused.\n");
}
tex_count++;
tex_ptr += 4;
} else {
/* Skip the FS input register, leave it uninitialized. */
/* If we try to set it to (0,0,0,1), it will lock up. */
if (fs_inputs->fog != ATTR_UNUSED) {
fp_offset++;
DBG(r300, DBG_RS, "r300: FS input fog unassigned.\n");
}
}
/* Rasterize WPOS. */
/* Don't set it in VAP if the FS doesn't need it. */
if (fs_inputs->wpos != ATTR_UNUSED && tex_count < 8) {
/* Set up the WPOS coordinates in VAP. */
rs.vap_vsm_vtx_assm |= (R300_INPUT_CNTL_TC0 << tex_count);
rs.vap_out_vtx_fmt[1] |= (4 << (3 * tex_count));
stream_loc_notcl[loc++] = 6 + tex_count;
/* Rasterize it. */
rX00_rs_tex(&rs, tex_count, tex_ptr, SWIZ_XYZW);
/* Write it to the FS input register. */
rX00_rs_tex_write(&rs, tex_count, fp_offset);
DBG(r300, DBG_RS, "r300: Rasterized WPOS written to FS.\n");
fp_offset++;
tex_count++;
tex_ptr += 4;
}
/* Invalidate the rest of the no-TCL (GA) stream locations. */
for (; loc < 16;) {
stream_loc_notcl[loc++] = -1;
}
/* Rasterize at least one color, or bad things happen. */
if (col_count == 0 && tex_count == 0) {
rX00_rs_col(&rs, 0, 0, SWIZ_0001);
col_count++;
DBG(r300, DBG_RS, "r300: Rasterized color 0 to prevent lockups.\n");
}
DBG(r300, DBG_RS, "r300: --- Rasterizer status ---: colors: %i, "
"generics: %i.\n", col_count, tex_count);
rs.count = MIN2(tex_ptr, 32) | (col_count << R300_IC_COUNT_SHIFT) |
R300_HIRES_EN;
count = MAX3(col_count, tex_count, 1);
rs.inst_count = count - 1;
/* set the GB enable flags */
if (r300->sprite_coord_enable)
stuffing_enable |= R300_GB_POINT_STUFF_ENABLE;
rs.gb_enable = stuffing_enable;
/* Now, after all that, see if we actually need to update the state. */
if (memcmp(r300->rs_block_state.state, &rs, sizeof(struct r300_rs_block))) {
memcpy(r300->rs_block_state.state, &rs, sizeof(struct r300_rs_block));
r300->rs_block_state.size = 13 + count*2;
}
}
static uint32_t r300_get_border_color(enum pipe_format format,
const float border[4])
{
const struct util_format_description *desc;
float border_swizzled[4] = {
border[2],
border[1],
border[0],
border[3]
};
uint32_t r;
desc = util_format_description(format);
/* We don't use util_pack_format because it does not handle the formats
* we want, e.g. R4G4B4A4 is non-existent in Gallium. */
switch (desc->channel[0].size) {
case 4:
r = ((float_to_ubyte(border_swizzled[0]) & 0xf0) >> 4) |
((float_to_ubyte(border_swizzled[1]) & 0xf0) << 0) |
((float_to_ubyte(border_swizzled[2]) & 0xf0) << 4) |
((float_to_ubyte(border_swizzled[3]) & 0xf0) << 8);
break;
case 5:
if (desc->channel[1].size == 5) {
r = ((float_to_ubyte(border_swizzled[0]) & 0xf8) >> 3) |
((float_to_ubyte(border_swizzled[1]) & 0xf8) << 2) |
((float_to_ubyte(border_swizzled[2]) & 0xf8) << 7) |
((float_to_ubyte(border_swizzled[3]) & 0x80) << 8);
} else if (desc->channel[1].size == 6) {
r = ((float_to_ubyte(border_swizzled[0]) & 0xf8) >> 3) |
((float_to_ubyte(border_swizzled[1]) & 0xfc) << 3) |
((float_to_ubyte(border_swizzled[2]) & 0xf8) << 8);
} else {
assert(0);
r = 0;
}
break;
default:
/* I think the fat formats (16, 32) are specified
* as the 8-bit ones. I am not sure how compressed formats
* work here. */
r = ((float_to_ubyte(border_swizzled[0]) & 0xff) << 0) |
((float_to_ubyte(border_swizzled[1]) & 0xff) << 8) |
((float_to_ubyte(border_swizzled[2]) & 0xff) << 16) |
((float_to_ubyte(border_swizzled[3]) & 0xff) << 24);
}
return r;
}
static void r300_merge_textures_and_samplers(struct r300_context* r300)
{
struct r300_textures_state *state =
(struct r300_textures_state*)r300->textures_state.state;
struct r300_texture_sampler_state *texstate;
struct r300_sampler_state *sampler;
struct r300_sampler_view *view;
struct r300_texture *tex;
unsigned min_level, max_level, i, j, size;
unsigned count = MIN2(state->sampler_view_count,
state->sampler_state_count);
/* The KIL opcode fix, see below. */
if (!count && !r300->screen->caps.is_r500)
count = 1;
state->tx_enable = 0;
state->count = 0;
size = 2;
for (i = 0; i < count; i++) {
if (state->sampler_views[i] && state->sampler_states[i]) {
state->tx_enable |= 1 << i;
view = state->sampler_views[i];
tex = r300_texture(view->base.texture);
sampler = state->sampler_states[i];
texstate = &state->regs[i];
texstate->format = view->format;
texstate->filter0 = sampler->filter0;
texstate->filter1 = sampler->filter1;
/* Set the border color. */
texstate->border_color =
r300_get_border_color(view->base.format,
sampler->state.border_color);
/* determine min/max levels */
max_level = MIN3(sampler->max_lod + view->base.first_level,
tex->desc.b.b.last_level, view->base.last_level);
min_level = MIN2(sampler->min_lod + view->base.first_level,
max_level);
if (tex->desc.is_npot && min_level > 0) {
/* Even though we do not implement mipmapping for NPOT
* textures, we should at least honor the minimum level
* which is allowed to be displayed. We do this by setting up
* an i-th mipmap level as the zero level. */
r300_texture_setup_format_state(r300->screen, &tex->desc,
min_level,
&texstate->format);
texstate->format.tile_config |=
tex->desc.offset_in_bytes[min_level] & 0xffffffe0;
assert((tex->desc.offset_in_bytes[min_level] & 0x1f) == 0);
}
/* Assign a texture cache region. */
texstate->format.format1 |= view->texcache_region;
/* Depth textures are kinda special. */
if (util_format_is_depth_or_stencil(tex->desc.b.b.format)) {
unsigned char depth_swizzle[4];
if (!r300->screen->caps.is_r500 &&
util_format_get_blocksizebits(tex->desc.b.b.format) == 32) {
/* X24x8 is sampled as Y16X16 on r3xx-r4xx.
* The depth here is at the Y component. */
for (j = 0; j < 4; j++)
depth_swizzle[j] = UTIL_FORMAT_SWIZZLE_Y;
} else {
for (j = 0; j < 4; j++)
depth_swizzle[j] = UTIL_FORMAT_SWIZZLE_X;
}
/* If compare mode is disabled, sampler view swizzles
* are stored in the format.
* Otherwise, the swizzles must be applied after the compare
* mode in the fragment shader. */
if (sampler->state.compare_mode == PIPE_TEX_COMPARE_NONE) {
texstate->format.format1 |=
r300_get_swizzle_combined(depth_swizzle,
view->swizzle);
} else {
texstate->format.format1 |=
r300_get_swizzle_combined(depth_swizzle, 0);
}
}
/* to emulate 1D textures through 2D ones correctly */
if (tex->desc.b.b.target == PIPE_TEXTURE_1D) {
texstate->filter0 &= ~R300_TX_WRAP_T_MASK;
texstate->filter0 |= R300_TX_WRAP_T(R300_TX_CLAMP_TO_EDGE);
}
if (tex->desc.is_npot) {
/* NPOT textures don't support mip filter, unfortunately.
* This prevents incorrect rendering. */
texstate->filter0 &= ~R300_TX_MIN_FILTER_MIP_MASK;
/* Mask out the mirrored flag. */
if (texstate->filter0 & R300_TX_WRAP_S(R300_TX_MIRRORED)) {
texstate->filter0 &= ~R300_TX_WRAP_S(R300_TX_MIRRORED);
}
if (texstate->filter0 & R300_TX_WRAP_T(R300_TX_MIRRORED)) {
texstate->filter0 &= ~R300_TX_WRAP_T(R300_TX_MIRRORED);
}
/* Change repeat to clamp-to-edge.
* (the repeat bit has a value of 0, no masking needed). */
if ((texstate->filter0 & R300_TX_WRAP_S_MASK) ==
R300_TX_WRAP_S(R300_TX_REPEAT)) {
texstate->filter0 |= R300_TX_WRAP_S(R300_TX_CLAMP_TO_EDGE);
}
if ((texstate->filter0 & R300_TX_WRAP_T_MASK) ==
R300_TX_WRAP_T(R300_TX_REPEAT)) {
texstate->filter0 |= R300_TX_WRAP_T(R300_TX_CLAMP_TO_EDGE);
}
} else {
/* the MAX_MIP level is the largest (finest) one */
texstate->format.format0 |= R300_TX_NUM_LEVELS(max_level);
texstate->filter0 |= R300_TX_MAX_MIP_LEVEL(min_level);
}
texstate->filter0 |= i << 28;
size += 16;
state->count = i+1;
} else {
/* For the KIL opcode to work on r3xx-r4xx, the texture unit
* assigned to this opcode (it's always the first one) must be
* enabled. Otherwise the opcode doesn't work.
*
* In order to not depend on the fragment shader, we just make
* the first unit enabled all the time. */
if (i == 0 && !r300->screen->caps.is_r500) {
pipe_sampler_view_reference(
(struct pipe_sampler_view**)&state->sampler_views[i],
&r300->texkill_sampler->base);
state->tx_enable |= 1 << i;
texstate = &state->regs[i];
/* Just set some valid state. */
texstate->format = r300->texkill_sampler->format;
texstate->filter0 =
r300_translate_tex_filters(PIPE_TEX_FILTER_NEAREST,
PIPE_TEX_FILTER_NEAREST,
PIPE_TEX_FILTER_NEAREST,
FALSE);
texstate->filter1 = 0;
texstate->border_color = 0;
texstate->filter0 |= i << 28;
size += 16;
state->count = i+1;
}
}
}
r300->textures_state.size = size;
/* Pick a fragment shader based on either the texture compare state
* or the uses_pitch flag. */
if (r300->fs.state && count) {
if (r300_pick_fragment_shader(r300)) {
r300_mark_fs_code_dirty(r300);
}
}
}
/* We can't use compressed zbuffers as samplers. */
static void r300_flush_depth_textures(struct r300_context *r300)
{
struct r300_textures_state *state =
(struct r300_textures_state*)r300->textures_state.state;
unsigned i, level;
unsigned count = MIN2(state->sampler_view_count,
state->sampler_state_count);
if (r300->z_decomp_rd)
return;
for (i = 0; i < count; i++)
if (state->sampler_views[i] && state->sampler_states[i]) {
struct pipe_resource *tex = state->sampler_views[i]->base.texture;
if (tex->target == PIPE_TEXTURE_3D ||
tex->target == PIPE_TEXTURE_CUBE)
continue;
/* Ignore non-depth textures.
* Also ignore reinterpreted depth textures, e.g. resource_copy. */
if (!util_format_is_depth_or_stencil(tex->format))
continue;
for (level = 0; level <= tex->last_level; level++)
if (r300_texture(tex)->zmask_in_use[level]) {
/* We don't handle 3D textures and cubemaps yet. */
r300_flush_depth_stencil(&r300->context, tex,
u_subresource(0, level), 0);
}
}
}
void r300_update_derived_state(struct r300_context* r300)
{
r300_flush_depth_textures(r300);
if (r300->textures_state.dirty) {
r300_merge_textures_and_samplers(r300);
}
if (r300->rs_block_state.dirty) {
r300_update_rs_block(r300);
if (r300->draw) {
memset(&r300->vertex_info, 0, sizeof(struct vertex_info));
r300_draw_emit_all_attribs(r300);
draw_compute_vertex_size(&r300->vertex_info);
r300_swtcl_vertex_psc(r300);
}
}
r300_update_hyperz_state(r300);
}