/*
* Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2010 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. */
/* r300_render: Vertex and index buffer primitive emission. Contains both
* HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
#include "draw/draw_context.h"
#include "draw/draw_vbuf.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_upload_mgr.h"
#include "util/u_prim.h"
#include "r300_cs.h"
#include "r300_context.h"
#include "r300_screen_buffer.h"
#include "r300_emit.h"
#include "r300_reg.h"
#include "r300_state_derived.h"
#include <limits.h>
#define IMMD_DWORDS 32
static uint32_t r300_translate_primitive(unsigned prim)
{
switch (prim) {
case PIPE_PRIM_POINTS:
return R300_VAP_VF_CNTL__PRIM_POINTS;
case PIPE_PRIM_LINES:
return R300_VAP_VF_CNTL__PRIM_LINES;
case PIPE_PRIM_LINE_LOOP:
return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
case PIPE_PRIM_LINE_STRIP:
return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
case PIPE_PRIM_TRIANGLES:
return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
case PIPE_PRIM_TRIANGLE_STRIP:
return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
case PIPE_PRIM_TRIANGLE_FAN:
return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
case PIPE_PRIM_QUADS:
return R300_VAP_VF_CNTL__PRIM_QUADS;
case PIPE_PRIM_QUAD_STRIP:
return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
case PIPE_PRIM_POLYGON:
return R300_VAP_VF_CNTL__PRIM_POLYGON;
default:
return 0;
}
}
static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300,
unsigned mode)
{
struct r300_rs_state* rs = (struct r300_rs_state*)r300->rs_state.state;
uint32_t color_control = rs->color_control;
/* By default (see r300_state.c:r300_create_rs_state) color_control is
* initialized to provoking the first vertex.
*
* Triangle fans must be reduced to the second vertex, not the first, in
* Gallium flatshade-first mode, as per the GL spec.
* (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt)
*
* Quads never provoke correctly in flatshade-first mode. The first
* vertex is never considered as provoking, so only the second, third,
* and fourth vertices can be selected, and both "third" and "last" modes
* select the fourth vertex. This is probably due to D3D lacking quads.
*
* Similarly, polygons reduce to the first, not the last, vertex, when in
* "last" mode, and all other modes start from the second vertex.
*
* ~ C.
*/
if (rs->rs.flatshade_first) {
switch (mode) {
case PIPE_PRIM_TRIANGLE_FAN:
color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND;
break;
case PIPE_PRIM_QUADS:
case PIPE_PRIM_QUAD_STRIP:
case PIPE_PRIM_POLYGON:
color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
break;
default:
color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST;
break;
}
} else {
color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
}
return color_control;
}
boolean r500_index_bias_supported(struct r300_context *r300)
{
return r300->screen->caps.is_r500 &&
r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
}
void r500_emit_index_bias(struct r300_context *r300, int index_bias)
{
CS_LOCALS(r300);
BEGIN_CS(2);
OUT_CS_REG(R500_VAP_INDEX_OFFSET,
(index_bias & 0xFFFFFF) | (index_bias < 0 ? 1<<24 : 0));
END_CS;
}
/* This function splits the index bias value into two parts:
* - buffer_offset: the value that can be safely added to buffer offsets
* in r300_emit_aos (it must yield a positive offset when added to
* a vertex buffer offset)
* - index_offset: the value that must be manually subtracted from indices
* in an index buffer to achieve negative offsets. */
static void r300_split_index_bias(struct r300_context *r300, int index_bias,
int *buffer_offset, int *index_offset)
{
struct pipe_vertex_buffer *vb, *vbufs = r300->vertex_buffer;
struct pipe_vertex_element *velem = r300->velems->velem;
unsigned i, size;
int max_neg_bias;
if (index_bias < 0) {
/* See how large index bias we may subtract. We must be careful
* here because negative buffer offsets are not allowed
* by the DRM API. */
max_neg_bias = INT_MAX;
for (i = 0; i < r300->velems->count; i++) {
vb = &vbufs[velem[i].vertex_buffer_index];
size = (vb->buffer_offset + velem[i].src_offset) / vb->stride;
max_neg_bias = MIN2(max_neg_bias, size);
}
/* Now set the minimum allowed value. */
*buffer_offset = MAX2(-max_neg_bias, index_bias);
} else {
/* A positive index bias is OK. */
*buffer_offset = index_bias;
}
*index_offset = index_bias - *buffer_offset;
}
enum r300_prepare_flags {
PREP_FIRST_DRAW = (1 << 0), /* call emit_dirty_state and friends? */
PREP_VALIDATE_VBOS = (1 << 1), /* validate VBOs? */
PREP_EMIT_AOS = (1 << 2), /* call emit_aos? */
PREP_EMIT_AOS_SWTCL = (1 << 3), /* call emit_aos_swtcl? */
PREP_INDEXED = (1 << 4) /* is this draw_elements? */
};
/**
* Check if the requested number of dwords is available in the CS and
* if not, flush.
* \param r300 The context.
* \param flags See r300_prepare_flags.
* \param cs_dwords The number of dwords to reserve in CS.
* \return TRUE if the CS was flushed
*/
static boolean r300_reserve_cs_dwords(struct r300_context *r300,
enum r300_prepare_flags flags,
unsigned cs_dwords)
{
boolean flushed = FALSE;
boolean first_draw = flags & PREP_FIRST_DRAW;
boolean emit_aos = flags & PREP_EMIT_AOS;
boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL;
boolean hw_index_bias = r500_index_bias_supported(r300);
/* Add dirty state, index offset, and AOS. */
if (first_draw) {
cs_dwords += r300_get_num_dirty_dwords(r300);
if (hw_index_bias)
cs_dwords += 2; /* emit_index_offset */
if (emit_aos)
cs_dwords += 55; /* emit_aos */
if (emit_aos_swtcl)
cs_dwords += 7; /* emit_aos_swtcl */
}
cs_dwords += r300_get_num_cs_end_dwords(r300);
/* Reserve requested CS space. */
if (cs_dwords > (r300->cs->ndw - r300->cs->cdw)) {
r300->context.flush(&r300->context, 0, NULL);
flushed = TRUE;
}
return flushed;
}
/**
* Validate buffers and emit dirty state.
* \param r300 The context.
* \param flags See r300_prepare_flags.
* \param index_buffer The index buffer to validate. The parameter may be NULL.
* \param aos_offset The offset passed to emit_aos.
* \param index_bias The index bias to emit.
* \return TRUE if rendering should be skipped
*/
static boolean r300_emit_states(struct r300_context *r300,
enum r300_prepare_flags flags,
struct pipe_resource *index_buffer,
int aos_offset,
int index_bias)
{
boolean first_draw = flags & PREP_FIRST_DRAW;
boolean emit_aos = flags & PREP_EMIT_AOS;
boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL;
boolean indexed = flags & PREP_INDEXED;
boolean hw_index_bias = r500_index_bias_supported(r300);
/* Validate buffers and emit dirty state if needed. */
if (first_draw) {
if (!r300_emit_buffer_validate(r300, flags & PREP_VALIDATE_VBOS,
index_buffer)) {
fprintf(stderr, "r300: CS space validation failed. "
"(not enough memory?) Skipping rendering.\n");
return FALSE;
}
r300_emit_dirty_state(r300);
if (hw_index_bias) {
if (r300->screen->caps.has_tcl)
r500_emit_index_bias(r300, index_bias);
else
r500_emit_index_bias(r300, 0);
}
if (emit_aos)
r300_emit_aos(r300, aos_offset, indexed);
if (emit_aos_swtcl)
r300_emit_aos_swtcl(r300, indexed);
}
return TRUE;
}
/**
* Check if the requested number of dwords is available in the CS and
* if not, flush. Then validate buffers and emit dirty state.
* \param r300 The context.
* \param flags See r300_prepare_flags.
* \param index_buffer The index buffer to validate. The parameter may be NULL.
* \param cs_dwords The number of dwords to reserve in CS.
* \param aos_offset The offset passed to emit_aos.
* \param index_bias The index bias to emit.
* \return TRUE if rendering should be skipped
*/
static boolean r300_prepare_for_rendering(struct r300_context *r300,
enum r300_prepare_flags flags,
struct pipe_resource *index_buffer,
unsigned cs_dwords,
int aos_offset,
int index_bias)
{
if (r300_reserve_cs_dwords(r300, flags, cs_dwords))
flags |= PREP_FIRST_DRAW;
return r300_emit_states(r300, flags, index_buffer, aos_offset, index_bias);
}
static boolean immd_is_good_idea(struct r300_context *r300,
unsigned count)
{
struct pipe_vertex_element* velem;
struct pipe_vertex_buffer* vbuf;
boolean checked[PIPE_MAX_ATTRIBS] = {0};
unsigned vertex_element_count = r300->velems->count;
unsigned i, vbi;
if (DBG_ON(r300, DBG_NO_IMMD)) {
return FALSE;
}
if (r300->draw) {
return FALSE;
}
if (count * r300->velems->vertex_size_dwords > IMMD_DWORDS) {
return FALSE;
}
/* We shouldn't map buffers referenced by CS, busy buffers,
* and ones placed in VRAM. */
for (i = 0; i < vertex_element_count; i++) {
velem = &r300->velems->velem[i];
vbi = velem->vertex_buffer_index;
if (!checked[vbi]) {
vbuf = &r300->vertex_buffer[vbi];
if (!(r300_buffer(vbuf->buffer)->domain & R300_DOMAIN_GTT)) {
return FALSE;
}
if (r300_buffer_is_referenced(&r300->context,
vbuf->buffer,
R300_REF_CS | R300_REF_HW)) {
/* It's a very bad idea to map it... */
return FALSE;
}
checked[vbi] = TRUE;
}
}
return TRUE;
}
/*****************************************************************************
* The HWTCL draw functions. *
****************************************************************************/
static void r300_emit_draw_arrays_immediate(struct r300_context *r300,
unsigned mode,
unsigned start,
unsigned count)
{
struct pipe_vertex_element* velem;
struct pipe_vertex_buffer* vbuf;
unsigned vertex_element_count = r300->velems->count;
unsigned i, v, vbi;
/* Size of the vertex, in dwords. */
unsigned vertex_size = r300->velems->vertex_size_dwords;
/* The number of dwords for this draw operation. */
unsigned dwords = 9 + count * vertex_size;
/* Size of the vertex element, in dwords. */
unsigned size[PIPE_MAX_ATTRIBS];
/* Stride to the same attrib in the next vertex in the vertex buffer,
* in dwords. */
unsigned stride[PIPE_MAX_ATTRIBS];
/* Mapped vertex buffers. */
uint32_t* map[PIPE_MAX_ATTRIBS];
uint32_t* mapelem[PIPE_MAX_ATTRIBS];
struct pipe_transfer* transfer[PIPE_MAX_ATTRIBS] = {0};
CS_LOCALS(r300);
if (!r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0))
return;
/* Calculate the vertex size, offsets, strides etc. and map the buffers. */
for (i = 0; i < vertex_element_count; i++) {
velem = &r300->velems->velem[i];
size[i] = r300->velems->hw_format_size[i] / 4;
vbi = velem->vertex_buffer_index;
vbuf = &r300->vertex_buffer[vbi];
stride[i] = vbuf->stride / 4;
/* Map the buffer. */
if (!transfer[vbi]) {
map[vbi] = (uint32_t*)pipe_buffer_map(&r300->context,
vbuf->buffer,
PIPE_TRANSFER_READ,
&transfer[vbi]);
map[vbi] += (vbuf->buffer_offset / 4) + stride[i] * start;
}
mapelem[i] = map[vbi] + (velem->src_offset / 4);
}
BEGIN_CS(dwords);
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, mode));
OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size);
OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
OUT_CS(count - 1);
OUT_CS(0);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, count * vertex_size);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (count << 16) |
r300_translate_primitive(mode));
/* Emit vertices. */
for (v = 0; v < count; v++) {
for (i = 0; i < vertex_element_count; i++) {
OUT_CS_TABLE(&mapelem[i][stride[i] * v], size[i]);
}
}
END_CS;
/* Unmap buffers. */
for (i = 0; i < vertex_element_count; i++) {
vbi = r300->velems->velem[i].vertex_buffer_index;
if (transfer[vbi]) {
vbuf = &r300->vertex_buffer[vbi];
pipe_buffer_unmap(&r300->context, vbuf->buffer, transfer[vbi]);
transfer[vbi] = NULL;
}
}
}
static void r300_emit_draw_arrays(struct r300_context *r300,
unsigned mode,
unsigned count)
{
boolean alt_num_verts = count > 65535;
CS_LOCALS(r300);
if (count >= (1 << 24)) {
fprintf(stderr, "r300: Got a huge number of vertices: %i, "
"refusing to render.\n", count);
return;
}
BEGIN_CS(7 + (alt_num_verts ? 2 : 0));
if (alt_num_verts) {
OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count);
}
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, mode));
OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
OUT_CS(count - 1);
OUT_CS(0);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
r300_translate_primitive(mode) |
(alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0));
END_CS;
}
static void r300_emit_draw_elements(struct r300_context *r300,
struct pipe_resource* indexBuffer,
unsigned indexSize,
unsigned minIndex,
unsigned maxIndex,
unsigned mode,
unsigned start,
unsigned count)
{
uint32_t count_dwords;
uint32_t offset_dwords = indexSize * start / sizeof(uint32_t);
boolean alt_num_verts = count > 65535;
CS_LOCALS(r300);
if (count >= (1 << 24)) {
fprintf(stderr, "r300: Got a huge number of vertices: %i, "
"refusing to render.\n", count);
return;
}
maxIndex = MIN2(maxIndex, r300->vertex_buffer_max_index);
DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n",
count, minIndex, maxIndex);
BEGIN_CS(13 + (alt_num_verts ? 2 : 0));
if (alt_num_verts) {
OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count);
}
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, mode));
OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
OUT_CS(maxIndex);
OUT_CS(minIndex);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0);
if (indexSize == 4) {
count_dwords = count;
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
R300_VAP_VF_CNTL__INDEX_SIZE_32bit |
r300_translate_primitive(mode) |
(alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0));
} else {
count_dwords = (count + 1) / 2;
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
r300_translate_primitive(mode) |
(alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0));
}
/* INDX_BUFFER is a truly special packet3.
* Unlike most other packet3, where the offset is after the count,
* the order is reversed, so the relocation ends up carrying the
* size of the indexbuf instead of the offset.
*/
OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) |
(0 << R300_INDX_BUFFER_SKIP_SHIFT));
OUT_CS(offset_dwords << 2);
OUT_CS_BUF_RELOC(indexBuffer, count_dwords,
r300_buffer(indexBuffer)->domain, 0);
END_CS;
}
/* This is the fast-path drawing & emission for HW TCL. */
static void r300_draw_range_elements(struct pipe_context* pipe,
struct pipe_resource* indexBuffer,
unsigned indexSize,
int indexBias,
unsigned minIndex,
unsigned maxIndex,
unsigned mode,
unsigned start,
unsigned count)
{
struct r300_context* r300 = r300_context(pipe);
struct pipe_resource* orgIndexBuffer = indexBuffer;
boolean alt_num_verts = r300->screen->caps.is_r500 &&
count > 65536 &&
r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
unsigned short_count;
int buffer_offset = 0, index_offset = 0; /* for index bias emulation */
boolean translate = FALSE;
unsigned new_offset;
if (r300->skip_rendering) {
return;
}
if (!u_trim_pipe_prim(mode, &count)) {
return;
}
/* Index buffer range checking. */
if ((start + count) * indexSize > indexBuffer->width0) {
fprintf(stderr, "r300: Invalid index buffer range. Skipping rendering.\n");
return;
}
/* Set up fallback for incompatible vertex layout if needed. */
if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) {
r300_begin_vertex_translate(r300);
translate = TRUE;
}
if (indexBias && !r500_index_bias_supported(r300)) {
r300_split_index_bias(r300, indexBias, &buffer_offset, &index_offset);
}
r300_translate_index_buffer(r300, &indexBuffer, &indexSize, index_offset,
&start, count);
r300_update_derived_state(r300);
r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count, &new_offset);
start = new_offset;
/* 15 dwords for emit_draw_elements. Give up if the function fails. */
if (!r300_prepare_for_rendering(r300,
PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS |
PREP_INDEXED, indexBuffer, 15, buffer_offset, indexBias))
goto done;
if (alt_num_verts || count <= 65535) {
r300_emit_draw_elements(r300, indexBuffer, indexSize,
minIndex, maxIndex, mode, start, count);
} else {
do {
short_count = MIN2(count, 65534);
r300_emit_draw_elements(r300, indexBuffer, indexSize,
minIndex, maxIndex,
mode, start, short_count);
start += short_count;
count -= short_count;
/* 15 dwords for emit_draw_elements */
if (count) {
if (!r300_prepare_for_rendering(r300,
PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED,
indexBuffer, 15, buffer_offset, indexBias))
goto done;
}
} while (count);
}
done:
if (indexBuffer != orgIndexBuffer) {
pipe_resource_reference( &indexBuffer, NULL );
}
if (translate) {
r300_end_vertex_translate(r300);
}
}
static void r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
unsigned start, unsigned count)
{
struct r300_context* r300 = r300_context(pipe);
boolean alt_num_verts = r300->screen->caps.is_r500 &&
count > 65536 &&
r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
unsigned short_count;
boolean translate = FALSE;
if (r300->skip_rendering) {
return;
}
if (!u_trim_pipe_prim(mode, &count)) {
return;
}
/* Set up fallback for incompatible vertex layout if needed. */
if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) {
r300_begin_vertex_translate(r300);
translate = TRUE;
}
r300_update_derived_state(r300);
if (immd_is_good_idea(r300, count)) {
r300_emit_draw_arrays_immediate(r300, mode, start, count);
} else {
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (!r300_prepare_for_rendering(r300,
PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS,
NULL, 9, start, 0))
goto done;
if (alt_num_verts || count <= 65535) {
r300_emit_draw_arrays(r300, mode, count);
} else {
do {
short_count = MIN2(count, 65535);
r300_emit_draw_arrays(r300, mode, short_count);
start += short_count;
count -= short_count;
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (count) {
if (!r300_prepare_for_rendering(r300,
PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9,
start, 0))
goto done;
}
} while (count);
}
}
done:
if (translate) {
r300_end_vertex_translate(r300);
}
}
static void r300_draw_vbo(struct pipe_context* pipe,
const struct pipe_draw_info *info)
{
struct r300_context* r300 = r300_context(pipe);
if (!r300->velems->count || !r300->vertex_buffer_count)
return;
if (info->indexed && r300->index_buffer.buffer) {
unsigned offset;
assert(r300->index_buffer.offset % r300->index_buffer.index_size == 0);
offset = r300->index_buffer.offset / r300->index_buffer.index_size;
r300_draw_range_elements(pipe,
r300->index_buffer.buffer,
r300->index_buffer.index_size,
info->index_bias,
info->min_index,
info->max_index,
info->mode,
info->start + offset,
info->count);
}
else {
r300_draw_arrays(pipe,
info->mode,
info->start,
info->count);
}
}
/****************************************************************************
* The rest of this file is for SW TCL rendering only. Please be polite and *
* keep these functions separated so that they are easier to locate. ~C. *
***************************************************************************/
/* SW TCL elements, using Draw. */
static void r300_swtcl_draw_vbo(struct pipe_context* pipe,
const struct pipe_draw_info *info)
{
struct r300_context* r300 = r300_context(pipe);
struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
struct pipe_transfer *ib_transfer = NULL;
unsigned count = info->count;
int i;
void *indices = NULL;
boolean indexed = info->indexed && r300->index_buffer.buffer;
if (r300->skip_rendering) {
return;
}
if (!u_trim_pipe_prim(info->mode, &count)) {
return;
}
r300_update_derived_state(r300);
r300_reserve_cs_dwords(r300,
PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL |
(indexed ? PREP_INDEXED : 0),
indexed ? 256 : 6);
for (i = 0; i < r300->vertex_buffer_count; i++) {
if (r300->vertex_buffer[i].buffer) {
void *buf = pipe_buffer_map(pipe,
r300->vertex_buffer[i].buffer,
PIPE_TRANSFER_READ,
&vb_transfer[i]);
draw_set_mapped_vertex_buffer(r300->draw, i, buf);
}
}
if (indexed) {
indices = pipe_buffer_map(pipe, r300->index_buffer.buffer,
PIPE_TRANSFER_READ, &ib_transfer);
}
draw_set_mapped_index_buffer(r300->draw, indices);
r300->draw_vbo_locked = TRUE;
r300->draw_first_emitted = FALSE;
draw_vbo(r300->draw, info);
draw_flush(r300->draw);
r300->draw_vbo_locked = FALSE;
for (i = 0; i < r300->vertex_buffer_count; i++) {
if (r300->vertex_buffer[i].buffer) {
pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer,
vb_transfer[i]);
draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
}
}
if (indexed) {
pipe_buffer_unmap(pipe, r300->index_buffer.buffer, ib_transfer);
draw_set_mapped_index_buffer(r300->draw, NULL);
}
}
/* Object for rendering using Draw. */
struct r300_render {
/* Parent class */
struct vbuf_render base;
/* Pipe context */
struct r300_context* r300;
/* Vertex information */
size_t vertex_size;
unsigned prim;
unsigned hwprim;
/* VBO */
size_t vbo_max_used;
void * vbo_ptr;
struct pipe_transfer *vbo_transfer;
};
static INLINE struct r300_render*
r300_render(struct vbuf_render* render)
{
return (struct r300_render*)render;
}
static const struct vertex_info*
r300_render_get_vertex_info(struct vbuf_render* render)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
return &r300->vertex_info;
}
static boolean r300_render_allocate_vertices(struct vbuf_render* render,
ushort vertex_size,
ushort count)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
struct pipe_screen* screen = r300->context.screen;
size_t size = (size_t)vertex_size * (size_t)count;
DBG(r300, DBG_DRAW, "r300: render_allocate_vertices (size: %d)\n", size);
if (size + r300->draw_vbo_offset > r300->draw_vbo_size)
{
pipe_resource_reference(&r300->vbo, NULL);
r300->vbo = pipe_buffer_create(screen,
PIPE_BIND_VERTEX_BUFFER,
R300_MAX_DRAW_VBO_SIZE);
r300->draw_vbo_offset = 0;
r300->draw_vbo_size = R300_MAX_DRAW_VBO_SIZE;
}
r300render->vertex_size = vertex_size;
return (r300->vbo) ? TRUE : FALSE;
}
static void* r300_render_map_vertices(struct vbuf_render* render)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
assert(!r300render->vbo_transfer);
DBG(r300, DBG_DRAW, "r300: render_map_vertices\n");
r300render->vbo_ptr = pipe_buffer_map(&r300render->r300->context,
r300->vbo,
PIPE_TRANSFER_WRITE,
&r300render->vbo_transfer);
assert(r300render->vbo_ptr);
return ((uint8_t*)r300render->vbo_ptr + r300->draw_vbo_offset);
}
static void r300_render_unmap_vertices(struct vbuf_render* render,
ushort min,
ushort max)
{
struct r300_render* r300render = r300_render(render);
struct pipe_context* context = &r300render->r300->context;
struct r300_context* r300 = r300render->r300;
assert(r300render->vbo_transfer);
DBG(r300, DBG_DRAW, "r300: render_unmap_vertices\n");
r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
r300render->vertex_size * (max + 1));
pipe_buffer_unmap(context, r300->vbo, r300render->vbo_transfer);
r300render->vbo_transfer = NULL;
}
static void r300_render_release_vertices(struct vbuf_render* render)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
DBG(r300, DBG_DRAW, "r300: render_release_vertices\n");
r300->draw_vbo_offset += r300render->vbo_max_used;
r300render->vbo_max_used = 0;
}
static boolean r300_render_set_primitive(struct vbuf_render* render,
unsigned prim)
{
struct r300_render* r300render = r300_render(render);
r300render->prim = prim;
r300render->hwprim = r300_translate_primitive(prim);
return TRUE;
}
static void r300_render_draw_arrays(struct vbuf_render* render,
unsigned start,
unsigned count)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
uint8_t* ptr;
unsigned i;
unsigned dwords = 6;
CS_LOCALS(r300);
(void) i; (void) ptr;
DBG(r300, DBG_DRAW, "r300: render_draw_arrays (count: %d)\n", count);
if (r300->draw_first_emitted) {
if (!r300_prepare_for_rendering(r300,
PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL,
NULL, 6, 0, 0))
return;
} else {
if (!r300_emit_states(r300,
PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL,
NULL, 0, 0))
return;
}
/* Uncomment to dump all VBOs rendered through this interface.
* Slow and noisy!
ptr = pipe_buffer_map(&r300render->r300->context,
r300render->vbo, PIPE_TRANSFER_READ,
&r300render->vbo_transfer);
for (i = 0; i < count; i++) {
printf("r300: Vertex %d\n", i);
draw_dump_emitted_vertex(&r300->vertex_info, ptr);
ptr += r300->vertex_info.size * 4;
printf("\n");
}
pipe_buffer_unmap(&r300render->r300->context, r300render->vbo,
r300render->vbo_transfer);
*/
BEGIN_CS(dwords);
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, r300render->prim));
OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
r300render->hwprim);
END_CS;
r300->draw_first_emitted = TRUE;
}
static void r300_render_draw_elements(struct vbuf_render* render,
const ushort* indices,
uint count)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
int i;
unsigned end_cs_dwords;
unsigned max_index = (r300->draw_vbo_size - r300->draw_vbo_offset) /
(r300render->r300->vertex_info.size * 4) - 1;
unsigned short_count;
unsigned free_dwords;
CS_LOCALS(r300);
DBG(r300, DBG_DRAW, "r300: render_draw_elements (count: %d)\n", count);
if (r300->draw_first_emitted) {
if (!r300_prepare_for_rendering(r300,
PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
NULL, 256, 0, 0))
return;
} else {
if (!r300_emit_states(r300,
PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
NULL, 0, 0))
return;
}
/* Below we manage the CS space manually because there may be more
* indices than it can fit in CS. */
end_cs_dwords = r300_get_num_cs_end_dwords(r300);
while (count) {
free_dwords = r300->cs->ndw - r300->cs->cdw;
short_count = MIN2(count, (free_dwords - end_cs_dwords - 6) * 2);
BEGIN_CS(6 + (short_count+1)/2);
OUT_CS_REG(R300_GA_COLOR_CONTROL,
r300_provoking_vertex_fixes(r300, r300render->prim));
OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max_index);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (short_count+1)/2);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (short_count << 16) |
r300render->hwprim);
for (i = 0; i < short_count-1; i += 2) {
OUT_CS(indices[i+1] << 16 | indices[i]);
}
if (short_count % 2) {
OUT_CS(indices[short_count-1]);
}
END_CS;
/* OK now subtract the emitted indices and see if we need to emit
* another draw packet. */
indices += short_count;
count -= short_count;
if (count) {
if (!r300_prepare_for_rendering(r300,
PREP_EMIT_AOS_SWTCL | PREP_INDEXED,
NULL, 256, 0, 0))
return;
end_cs_dwords = r300_get_num_cs_end_dwords(r300);
}
}
r300->draw_first_emitted = TRUE;
}
static void r300_render_destroy(struct vbuf_render* render)
{
FREE(render);
}
static struct vbuf_render* r300_render_create(struct r300_context* r300)
{
struct r300_render* r300render = CALLOC_STRUCT(r300_render);
r300render->r300 = r300;
/* XXX find real numbers plz */
r300render->base.max_vertex_buffer_bytes = 128 * 1024;
r300render->base.max_indices = 16 * 1024;
r300render->base.get_vertex_info = r300_render_get_vertex_info;
r300render->base.allocate_vertices = r300_render_allocate_vertices;
r300render->base.map_vertices = r300_render_map_vertices;
r300render->base.unmap_vertices = r300_render_unmap_vertices;
r300render->base.set_primitive = r300_render_set_primitive;
r300render->base.draw_elements = r300_render_draw_elements;
r300render->base.draw_arrays = r300_render_draw_arrays;
r300render->base.release_vertices = r300_render_release_vertices;
r300render->base.destroy = r300_render_destroy;
return &r300render->base;
}
struct draw_stage* r300_draw_stage(struct r300_context* r300)
{
struct vbuf_render* render;
struct draw_stage* stage;
render = r300_render_create(r300);
if (!render) {
return NULL;
}
stage = draw_vbuf_stage(r300->draw, render);
if (!stage) {
render->destroy(render);
return NULL;
}
draw_set_render(r300->draw, render);
return stage;
}
void r300_draw_flush_vbuf(struct r300_context *r300)
{
pipe_resource_reference(&r300->vbo, NULL);
r300->draw_vbo_size = 0;
}
/****************************************************************************
* End of SW TCL functions *
***************************************************************************/
/* This functions is used to draw a rectangle for the blitter module.
*
* If we rendered a quad, the pixels on the main diagonal
* would be computed and stored twice, which makes the clear/copy codepaths
* somewhat inefficient. Instead we use a rectangular point sprite. */
static void r300_blitter_draw_rectangle(struct blitter_context *blitter,
unsigned x1, unsigned y1,
unsigned x2, unsigned y2,
float depth,
enum blitter_attrib_type type,
const float attrib[4])
{
struct r300_context *r300 = r300_context(util_blitter_get_pipe(blitter));
unsigned last_sprite_coord_enable = r300->sprite_coord_enable;
unsigned width = x2 - x1;
unsigned height = y2 - y1;
unsigned vertex_size =
type == UTIL_BLITTER_ATTRIB_COLOR || !r300->draw ? 8 : 4;
unsigned dwords = 13 + vertex_size +
(type == UTIL_BLITTER_ATTRIB_TEXCOORD ? 7 : 0);
const float zeros[4] = {0, 0, 0, 0};
CS_LOCALS(r300);
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD)
r300->sprite_coord_enable = 1;
r300_update_derived_state(r300);
/* Mark some states we don't care about as non-dirty. */
r300->clip_state.dirty = FALSE;
r300->viewport_state.dirty = FALSE;
if (!r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0))
goto done;
DBG(r300, DBG_DRAW, "r300: draw_rectangle\n");
BEGIN_CS(dwords);
/* Set up GA. */
OUT_CS_REG(R300_GA_POINT_SIZE, (height * 6) | ((width * 6) << 16));
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD) {
/* Set up the GA to generate texcoords. */
OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE |
(R300_GB_TEX_STR << R300_GB_TEX0_SOURCE_SHIFT));
OUT_CS_REG_SEQ(R300_GA_POINT_S0, 4);
OUT_CS_32F(attrib[0]);
OUT_CS_32F(attrib[3]);
OUT_CS_32F(attrib[2]);
OUT_CS_32F(attrib[1]);
}
/* Set up VAP controls. */
OUT_CS_REG(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE);
OUT_CS_REG(R300_VAP_VTE_CNTL, R300_VTX_XY_FMT | R300_VTX_Z_FMT);
OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size);
OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
OUT_CS(1);
OUT_CS(0);
/* Draw. */
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, vertex_size);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (1 << 16) |
R300_VAP_VF_CNTL__PRIM_POINTS);
OUT_CS_32F(x1 + width * 0.5f);
OUT_CS_32F(y1 + height * 0.5f);
OUT_CS_32F(depth);
OUT_CS_32F(1);
if (vertex_size == 8) {
if (!attrib)
attrib = zeros;
OUT_CS_TABLE(attrib, 4);
}
END_CS;
done:
/* Restore the state. */
r300->clip_state.dirty = TRUE;
r300->rs_state.dirty = TRUE;
r300->viewport_state.dirty = TRUE;
r300->sprite_coord_enable = last_sprite_coord_enable;
}
static void r300_resource_resolve(struct pipe_context* pipe,
struct pipe_resource* dest,
struct pipe_subresource subdest,
struct pipe_resource* src,
struct pipe_subresource subsrc)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state;
struct pipe_surface* srcsurf = src->screen->get_tex_surface(src->screen,
src, subsrc.face, subsrc.level, 0, 0);
float color[] = {0, 0, 0, 0};
DBG(r300, DBG_DRAW, "r300: Resolving resource...\n");
/* Enable AA resolve. */
aa->dest = r300_surface(
dest->screen->get_tex_surface(dest->screen, dest, subdest.face,
subdest.level, 0, 0));
aa->aaresolve_ctl =
R300_RB3D_AARESOLVE_CTL_AARESOLVE_MODE_RESOLVE |
R300_RB3D_AARESOLVE_CTL_AARESOLVE_ALPHA_AVERAGE;
r300->aa_state.size = 12;
r300->aa_state.dirty = TRUE;
/* Resolve the surface. */
r300->context.clear_render_target(pipe,
srcsurf, color, 0, 0, src->width0, src->height0);
/* Disable AA resolve. */
aa->aaresolve_ctl = 0;
r300->aa_state.size = 4;
r300->aa_state.dirty = TRUE;
pipe_surface_reference((struct pipe_surface**)&srcsurf, NULL);
pipe_surface_reference((struct pipe_surface**)&aa->dest, NULL);
}
void r300_init_render_functions(struct r300_context *r300)
{
/* Set draw functions based on presence of HW TCL. */
if (r300->screen->caps.has_tcl) {
r300->context.draw_vbo = r300_draw_vbo;
} else {
r300->context.draw_vbo = r300_swtcl_draw_vbo;
}
r300->context.resource_resolve = r300_resource_resolve;
r300->blitter->draw_rectangle = r300_blitter_draw_rectangle;
/* Plug in the two-sided stencil reference value fallback if needed. */
if (!r300->screen->caps.is_r500)
r300_plug_in_stencil_ref_fallback(r300);
}