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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_state_derived.h"
#include "r300_fs.h"
#include "r300_state_inlines.h"
#include "r300_vs.h"
/* r300_state_derived: Various bits of state which are dependent upon
* currently bound CSO data. */
/* Set up the vs_tab and routes. */
static void r300_vs_tab_routes(struct r300_context* r300,
struct r300_vertex_format* vformat)
{
struct r300_screen* r300screen = r300_screen(r300->context.screen);
struct vertex_info* vinfo = &vformat->vinfo;
int* tab = vformat->vs_tab;
boolean pos = FALSE, psize = FALSE, fog = FALSE;
int i, texs = 0, cols = 0;
struct tgsi_shader_info* info;
if (r300screen->caps->has_tcl) {
/* Use vertex shader to determine required routes. */
info = &r300->vs->info;
} else {
/* Use fragment shader to determine required routes. */
info = &r300->fs->info;
}
assert(info->num_inputs <= 16);
if (!r300screen->caps->has_tcl || !r300->rs_state->enable_vte)
{
for (i = 0; i < info->num_inputs; i++) {
switch (r300->vs->code.inputs[i]) {
case TGSI_SEMANTIC_POSITION:
pos = TRUE;
tab[i] = 0;
break;
case TGSI_SEMANTIC_COLOR:
tab[i] = 2 + cols;
cols++;
break;
case TGSI_SEMANTIC_PSIZE:
assert(psize == FALSE);
psize = TRUE;
tab[i] = 15;
break;
case TGSI_SEMANTIC_FOG:
assert(fog == FALSE);
fog = TRUE;
/* Fall through */
case TGSI_SEMANTIC_GENERIC:
tab[i] = 6 + texs;
texs++;
break;
default:
debug_printf("r300: Unknown vertex input %d\n",
info->input_semantic_name[i]);
break;
}
}
}
else
{
/* Just copy vert attribs over as-is. */
for (i = 0; i < info->num_inputs; i++) {
tab[i] = i;
}
for (i = 0; i < info->num_outputs; i++) {
switch (info->output_semantic_name[i]) {
case TGSI_SEMANTIC_POSITION:
pos = TRUE;
break;
case TGSI_SEMANTIC_COLOR:
cols++;
break;
case TGSI_SEMANTIC_PSIZE:
psize = TRUE;
break;
case TGSI_SEMANTIC_FOG:
fog = TRUE;
/* Fall through */
case TGSI_SEMANTIC_GENERIC:
texs++;
break;
default:
debug_printf("r300: Unknown vertex output %d\n",
info->output_semantic_name[i]);
break;
}
}
}
/* XXX magic */
assert(texs <= 8);
/* Do the actual vertex_info setup.
*
* vertex_info has four uints of hardware-specific data in it.
* vinfo.hwfmt[0] is R300_VAP_VTX_STATE_CNTL
* vinfo.hwfmt[1] is R300_VAP_VSM_VTX_ASSM
* vinfo.hwfmt[2] is R300_VAP_OUTPUT_VTX_FMT_0
* vinfo.hwfmt[3] is R300_VAP_OUTPUT_VTX_FMT_1 */
vinfo->hwfmt[0] = 0x5555; /* XXX this is classic Mesa bonghits */
/* We need to add vertex position attribute only for SW TCL case,
* for HW TCL case it could be generated by vertex shader */
if (!pos && !r300screen->caps->has_tcl) {
debug_printf("r300: Forcing vertex position attribute emit...\n");
/* Make room for the position attribute
* at the beginning of the tab. */
for (i = 15; i > 0; i--) {
tab[i] = tab[i-1];
}
tab[0] = 0;
}
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE,
draw_find_vs_output(r300->draw, TGSI_SEMANTIC_POSITION, 0));
vinfo->hwfmt[1] |= R300_INPUT_CNTL_POS;
vinfo->hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT;
if (psize) {
draw_emit_vertex_attr(vinfo, EMIT_1F_PSIZE, INTERP_POS,
draw_find_vs_output(r300->draw, TGSI_SEMANTIC_PSIZE, 0));
vinfo->hwfmt[2] |= R300_VAP_OUTPUT_VTX_FMT_0__PT_SIZE_PRESENT;
}
for (i = 0; i < cols; i++) {
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_LINEAR,
draw_find_vs_output(r300->draw, TGSI_SEMANTIC_COLOR, i));
vinfo->hwfmt[1] |= R300_INPUT_CNTL_COLOR;
vinfo->hwfmt[2] |= (R300_VAP_OUTPUT_VTX_FMT_0__COLOR_0_PRESENT << i);
}
/* Init i right here, increment it if fog is enabled.
* This gets around a double-increment problem. */
i = 0;
if (fog) {
i++;
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE,
draw_find_vs_output(r300->draw, TGSI_SEMANTIC_FOG, 0));
vinfo->hwfmt[1] |= (R300_INPUT_CNTL_TC0 << i);
vinfo->hwfmt[3] |= (4 << (3 * i));
}
for (; i < texs; i++) {
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE,
draw_find_vs_output(r300->draw, TGSI_SEMANTIC_GENERIC, i));
vinfo->hwfmt[1] |= (R300_INPUT_CNTL_TC0 << i);
vinfo->hwfmt[3] |= (4 << (3 * i));
}
/* Handle the case where the vertex shader will be generating some of
* the attribs based on its inputs. */
if (r300screen->caps->has_tcl &&
info->num_inputs < info->num_outputs) {
vinfo->num_attribs = info->num_inputs;
}
draw_compute_vertex_size(vinfo);
}
/* Update the PSC tables. */
static void r300_vertex_psc(struct r300_context* r300,
struct r300_vertex_format* vformat)
{
struct r300_screen* r300screen = r300_screen(r300->context.screen);
struct vertex_info* vinfo = &vformat->vinfo;
int* tab = vformat->vs_tab;
uint32_t temp;
unsigned i, attrib_count;
/* Vertex shaders have no semantics on their inputs,
* so PSC should just route stuff based on their info,
* and not on attrib information. */
if (r300screen->caps->has_tcl) {
attrib_count = r300->vs->info.num_inputs;
DBG(r300, DBG_DRAW, "r300: routing %d attribs in psc for vs\n",
attrib_count);
} else {
attrib_count = vinfo->num_attribs;
DBG(r300, DBG_DRAW, "r300: attrib count: %d\n", attrib_count);
for (i = 0; i < attrib_count; i++) {
DBG(r300, DBG_DRAW, "r300: attrib: offset %d, interp %d, size %d,"
" tab %d\n", vinfo->attrib[i].src_index,
vinfo->attrib[i].interp_mode, vinfo->attrib[i].emit,
tab[i]);
}
}
for (i = 0; i < attrib_count; i++) {
/* Make sure we have a proper destination for our attribute */
assert(tab[i] != -1);
/* Add the attribute to the PSC table. */
temp = r300screen->caps->has_tcl ?
R300_DATA_TYPE_FLOAT_4 :
translate_vertex_data_type(vinfo->attrib[i].emit);
temp |= tab[i] << R300_DST_VEC_LOC_SHIFT;
if (i & 1) {
vformat->vap_prog_stream_cntl[i >> 1] &= 0x0000ffff;
vformat->vap_prog_stream_cntl[i >> 1] |= temp << 16;
vformat->vap_prog_stream_cntl_ext[i >> 1] |=
(R300_VAP_SWIZZLE_XYZW << 16);
} else {
vformat->vap_prog_stream_cntl[i >> 1] &= 0xffff0000;
vformat->vap_prog_stream_cntl[i >> 1] |= temp << 0;
vformat->vap_prog_stream_cntl_ext[i >> 1] |=
(R300_VAP_SWIZZLE_XYZW << 0);
}
}
/* Set the last vector in the PSC. */
i--;
vformat->vap_prog_stream_cntl[i >> 1] |=
(R300_LAST_VEC << (i & 1 ? 16 : 0));
}
/* Update the vertex format. */
static void r300_update_vertex_format(struct r300_context* r300)
{
struct r300_vertex_format vformat;
int i;
memset(&vformat, 0, sizeof(struct r300_vertex_format));
for (i = 0; i < 16; i++) {
vformat.vs_tab[i] = -1;
vformat.fs_tab[i] = -1;
}
r300_vs_tab_routes(r300, &vformat);
r300_vertex_psc(r300, &vformat);
if (memcmp(&r300->vertex_info, &vformat,
sizeof(struct r300_vertex_format))) {
memcpy(&r300->vertex_info, &vformat,
sizeof(struct r300_vertex_format));
r300->dirty_state |= R300_NEW_VERTEX_FORMAT;
}
}
/* Set up the mappings from GB to US, for RS block. */
static void r300_update_fs_tab(struct r300_context* r300)
{
struct r300_vertex_format* vformat = &r300->vertex_info;
struct tgsi_shader_info* info = &r300->fs->info;
int i, cols = 0, texs = 0, cols_emitted = 0;
int* tab = vformat->fs_tab;
for (i = 0; i < 16; i++) {
tab[i] = -1;
}
assert(info->num_inputs <= 16);
for (i = 0; i < info->num_inputs; i++) {
switch (info->input_semantic_name[i]) {
case TGSI_SEMANTIC_COLOR:
tab[i] = INTERP_LINEAR;
cols++;
break;
case TGSI_SEMANTIC_POSITION:
case TGSI_SEMANTIC_PSIZE:
debug_printf("r300: Implementation error: Can't use "
"pos attribs in fragshader yet!\n");
/* Pass through for now */
case TGSI_SEMANTIC_FOG:
case TGSI_SEMANTIC_GENERIC:
tab[i] = INTERP_PERSPECTIVE;
break;
default:
debug_printf("r300: Unknown vertex input %d\n",
info->input_semantic_name[i]);
break;
}
}
/* Now that we know where everything is... */
DBG(r300, DBG_DRAW, "r300: fp input count: %d\n", info->num_inputs);
for (i = 0; i < info->num_inputs; i++) {
switch (tab[i]) {
case INTERP_LINEAR:
DBG(r300, DBG_DRAW, "r300: attrib: "
"stack offset %d, color, tab %d\n",
i, cols_emitted);
tab[i] = cols_emitted;
cols_emitted++;
break;
case INTERP_PERSPECTIVE:
DBG(r300, DBG_DRAW, "r300: attrib: "
"stack offset %d, texcoord, tab %d\n",
i, cols + texs);
tab[i] = cols + texs;
texs++;
break;
case -1:
debug_printf("r300: Implementation error: Bad fp interp!\n");
default:
break;
}
}
}
/* Set up the RS block. This is the part of the chipset that actually does
* the rasterization of vertices into fragments. This is also the part of the
* chipset that locks up if any part of it is even slightly wrong. */
static void r300_update_rs_block(struct r300_context* r300)
{
struct r300_rs_block* rs = r300->rs_block;
struct tgsi_shader_info* info = &r300->fs->info;
int* tab = r300->vertex_info.fs_tab;
int col_count = 0, fp_offset = 0, i, tex_count = 0;
int rs_tex_comp = 0;
memset(rs, 0, sizeof(struct r300_rs_block));
if (r300_screen(r300->context.screen)->caps->is_r500) {
for (i = 0; i < info->num_inputs; i++) {
assert(tab[i] != -1);
switch (info->input_semantic_name[i]) {
case TGSI_SEMANTIC_COLOR:
rs->ip[col_count] |=
R500_RS_COL_PTR(col_count) |
R500_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
col_count++;
break;
case TGSI_SEMANTIC_GENERIC:
rs->ip[tex_count] |=
R500_RS_SEL_S(rs_tex_comp) |
R500_RS_SEL_T(rs_tex_comp + 1) |
R500_RS_SEL_R(rs_tex_comp + 2) |
R500_RS_SEL_Q(rs_tex_comp + 3);
tex_count++;
rs_tex_comp += 4;
break;
default:
break;
}
}
/* Rasterize at least one color, or bad things happen. */
if ((col_count == 0) && (tex_count == 0)) {
rs->ip[0] |= R500_RS_COL_FMT(R300_RS_COL_FMT_0001);
col_count++;
}
for (i = 0; i < tex_count; i++) {
rs->inst[i] |= R500_RS_INST_TEX_ID(i) |
R500_RS_INST_TEX_CN_WRITE | R500_RS_INST_TEX_ADDR(fp_offset);
fp_offset++;
}
for (i = 0; i < col_count; i++) {
rs->inst[i] |= R500_RS_INST_COL_ID(i) |
R500_RS_INST_COL_CN_WRITE | R500_RS_INST_COL_ADDR(fp_offset);
fp_offset++;
}
} else {
for (i = 0; i < info->num_inputs; i++) {
assert(tab[i] != -1);
switch (info->input_semantic_name[i]) {
case TGSI_SEMANTIC_COLOR:
rs->ip[col_count] |=
R300_RS_COL_PTR(col_count) |
R300_RS_COL_FMT(R300_RS_COL_FMT_RGBA);
col_count++;
break;
case TGSI_SEMANTIC_GENERIC:
rs->ip[tex_count] |=
R300_RS_TEX_PTR(rs_tex_comp) |
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);
tex_count++;
rs_tex_comp+=4;
break;
default:
break;
}
}
if (col_count == 0) {
rs->ip[0] |= R300_RS_COL_FMT(R300_RS_COL_FMT_0001);
}
if (tex_count == 0) {
rs->ip[0] |=
R300_RS_SEL_S(R300_RS_SEL_K0) |
R300_RS_SEL_T(R300_RS_SEL_K0) |
R300_RS_SEL_R(R300_RS_SEL_K0) |
R300_RS_SEL_Q(R300_RS_SEL_K1);
}
/* Rasterize at least one color, or bad things happen. */
if ((col_count == 0) && (tex_count == 0)) {
col_count++;
}
for (i = 0; i < tex_count; i++) {
rs->inst[i] |= R300_RS_INST_TEX_ID(i) |
R300_RS_INST_TEX_CN_WRITE | R300_RS_INST_TEX_ADDR(fp_offset);
fp_offset++;
}
for (i = 0; i < col_count; i++) {
rs->inst[i] |= R300_RS_INST_COL_ID(i) |
R300_RS_INST_COL_CN_WRITE | R300_RS_INST_COL_ADDR(fp_offset);
fp_offset++;
}
}
rs->count = (rs_tex_comp) | (col_count << R300_IC_COUNT_SHIFT) |
R300_HIRES_EN;
rs->inst_count = MAX2(MAX2(col_count - 1, tex_count - 1), 0);
}
static void r300_update_ztop(struct r300_context* r300)
{
r300->ztop_state.z_buffer_top = R300_ZTOP_ENABLE;
/* This is important enough that I felt it warranted a comment.
*
* According to the docs, these are the conditions where ZTOP must be
* disabled:
* 1) Alpha testing enabled
* 2) Texture kill instructions in fragment shader
* 3) Chroma key culling enabled
* 4) W-buffering enabled
*
* The docs claim that for the first three cases, if no ZS writes happen,
* then ZTOP can be used.
*
* Additionally, the following conditions require disabled ZTOP:
* ~) Depth writes in fragment shader
* ~) Outstanding occlusion queries
*
* ~C.
*/
if (r300->dsa_state->alpha_function) {
r300->ztop_state.z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300_fragment_shader_writes_depth(r300->fs)) {
r300->ztop_state.z_buffer_top = R300_ZTOP_DISABLE;
} else if (r300->query_current) {
r300->ztop_state.z_buffer_top = R300_ZTOP_DISABLE;
}
}
void r300_update_derived_state(struct r300_context* r300)
{
if (r300->dirty_state &
(R300_NEW_FRAGMENT_SHADER | R300_NEW_VERTEX_SHADER)) {
r300_update_vertex_format(r300);
}
if (r300->dirty_state & R300_NEW_VERTEX_FORMAT) {
r300_update_fs_tab(r300);
r300_update_rs_block(r300);
}
if (r300->dirty_state &
(R300_NEW_DSA | R300_NEW_FRAGMENT_SHADER | R300_NEW_QUERY)) {
r300_update_ztop(r300);
}
}
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