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/************************************************************************** |
* |
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
* All Rights Reserved. |
* |
* 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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. |
* |
**************************************************************************/ |
|
/* |
* Authors: |
* Keith Whitwell <keith@tungstengraphics.com> |
*/ |
|
#include "draw/draw_context.h" |
#include "draw/draw_gs.h" |
#include "draw/draw_private.h" |
#include "draw/draw_pt.h" |
#include "draw/draw_vbuf.h" |
#include "draw/draw_vs.h" |
#include "tgsi/tgsi_dump.h" |
#include "util/u_math.h" |
#include "util/u_prim.h" |
#include "util/u_format.h" |
#include "util/u_draw.h" |
|
|
DEBUG_GET_ONCE_BOOL_OPTION(draw_fse, "DRAW_FSE", FALSE) |
DEBUG_GET_ONCE_BOOL_OPTION(draw_no_fse, "DRAW_NO_FSE", FALSE) |
|
/* Overall we split things into: |
* - frontend -- prepare fetch_elts, draw_elts - eg vsplit |
* - middle -- fetch, shade, cliptest, viewport |
* - pipeline -- the prim pipeline: clipping, wide lines, etc |
* - backend -- the vbuf_render provided by the driver. |
*/ |
static boolean |
draw_pt_arrays(struct draw_context *draw, |
unsigned prim, |
unsigned start, |
unsigned count) |
{ |
struct draw_pt_front_end *frontend = NULL; |
struct draw_pt_middle_end *middle = NULL; |
unsigned opt = 0; |
|
/* Sanitize primitive length: |
*/ |
{ |
unsigned first, incr; |
draw_pt_split_prim(prim, &first, &incr); |
count = draw_pt_trim_count(count, first, incr); |
if (count < first) |
return TRUE; |
} |
|
if (!draw->force_passthrough) { |
unsigned gs_out_prim = (draw->gs.geometry_shader ? |
draw->gs.geometry_shader->output_primitive : |
prim); |
|
if (!draw->render) { |
opt |= PT_PIPELINE; |
} |
|
if (draw_need_pipeline(draw, |
draw->rasterizer, |
gs_out_prim)) { |
opt |= PT_PIPELINE; |
} |
|
if ((draw->clip_xy || |
draw->clip_z || |
draw->clip_user) && !draw->pt.test_fse) { |
opt |= PT_CLIPTEST; |
} |
|
opt |= PT_SHADE; |
} |
|
if (draw->pt.middle.llvm) { |
middle = draw->pt.middle.llvm; |
} else { |
if (opt == 0) |
middle = draw->pt.middle.fetch_emit; |
else if (opt == PT_SHADE && !draw->pt.no_fse) |
middle = draw->pt.middle.fetch_shade_emit; |
else |
middle = draw->pt.middle.general; |
} |
|
frontend = draw->pt.frontend; |
|
if (frontend ) { |
if (draw->pt.prim != prim || draw->pt.opt != opt) { |
/* In certain conditions switching primitives requires us to flush |
* and validate the different stages. One example is when smooth |
* lines are active but first drawn with triangles and then with |
* lines. |
*/ |
draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); |
frontend = NULL; |
} else if (draw->pt.eltSize != draw->pt.user.eltSize) { |
/* Flush draw state if eltSize changed. |
* This could be improved so only the frontend is flushed since it |
* converts all indices to ushorts and the fetch part of the middle |
* always prepares both linear and indexed. |
*/ |
frontend->flush( frontend, DRAW_FLUSH_STATE_CHANGE ); |
frontend = NULL; |
} |
} |
|
if (!frontend) { |
frontend = draw->pt.front.vsplit; |
|
frontend->prepare( frontend, prim, middle, opt ); |
|
draw->pt.frontend = frontend; |
draw->pt.eltSize = draw->pt.user.eltSize; |
draw->pt.prim = prim; |
draw->pt.opt = opt; |
} |
|
if (draw->pt.rebind_parameters) { |
/* update constants, viewport dims, clip planes, etc */ |
middle->bind_parameters(middle); |
draw->pt.rebind_parameters = FALSE; |
} |
|
frontend->run( frontend, start, count ); |
|
return TRUE; |
} |
|
void draw_pt_flush( struct draw_context *draw, unsigned flags ) |
{ |
assert(flags); |
|
if (draw->pt.frontend) { |
draw->pt.frontend->flush( draw->pt.frontend, flags ); |
|
/* don't prepare if we only are flushing the backend */ |
if (flags & DRAW_FLUSH_STATE_CHANGE) |
draw->pt.frontend = NULL; |
} |
|
if (flags & DRAW_FLUSH_PARAMETER_CHANGE) { |
draw->pt.rebind_parameters = TRUE; |
} |
} |
|
|
|
boolean draw_pt_init( struct draw_context *draw ) |
{ |
draw->pt.test_fse = debug_get_option_draw_fse(); |
draw->pt.no_fse = debug_get_option_draw_no_fse(); |
|
draw->pt.front.vsplit = draw_pt_vsplit(draw); |
if (!draw->pt.front.vsplit) |
return FALSE; |
|
draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw ); |
if (!draw->pt.middle.fetch_emit) |
return FALSE; |
|
draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw ); |
if (!draw->pt.middle.fetch_shade_emit) |
return FALSE; |
|
draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw ); |
if (!draw->pt.middle.general) |
return FALSE; |
|
#if HAVE_LLVM |
if (draw->llvm) |
draw->pt.middle.llvm = draw_pt_fetch_pipeline_or_emit_llvm( draw ); |
#endif |
|
return TRUE; |
} |
|
|
void draw_pt_destroy( struct draw_context *draw ) |
{ |
if (draw->pt.middle.llvm) { |
draw->pt.middle.llvm->destroy( draw->pt.middle.llvm ); |
draw->pt.middle.llvm = NULL; |
} |
|
if (draw->pt.middle.general) { |
draw->pt.middle.general->destroy( draw->pt.middle.general ); |
draw->pt.middle.general = NULL; |
} |
|
if (draw->pt.middle.fetch_emit) { |
draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit ); |
draw->pt.middle.fetch_emit = NULL; |
} |
|
if (draw->pt.middle.fetch_shade_emit) { |
draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit ); |
draw->pt.middle.fetch_shade_emit = NULL; |
} |
|
if (draw->pt.front.vsplit) { |
draw->pt.front.vsplit->destroy( draw->pt.front.vsplit ); |
draw->pt.front.vsplit = NULL; |
} |
} |
|
|
/** |
* Debug- print the first 'count' vertices. |
*/ |
static void |
draw_print_arrays(struct draw_context *draw, uint prim, int start, uint count) |
{ |
uint i; |
|
debug_printf("Draw arrays(prim = %u, start = %u, count = %u)\n", |
prim, start, count); |
|
for (i = 0; i < count; i++) { |
uint ii = 0; |
uint j; |
|
if (draw->pt.user.eltSize) { |
/* indexed arrays */ |
|
switch (draw->pt.user.eltSize) { |
case 1: |
{ |
const ubyte *elem = (const ubyte *) draw->pt.user.elts; |
ii = elem[start + i]; |
} |
break; |
case 2: |
{ |
const ushort *elem = (const ushort *) draw->pt.user.elts; |
ii = elem[start + i]; |
} |
break; |
case 4: |
{ |
const uint *elem = (const uint *) draw->pt.user.elts; |
ii = elem[start + i]; |
} |
break; |
default: |
assert(0); |
return; |
} |
ii += draw->pt.user.eltBias; |
debug_printf("Element[%u + %u] + %i -> Vertex %u:\n", start, i, |
draw->pt.user.eltBias, ii); |
} |
else { |
/* non-indexed arrays */ |
ii = start + i; |
debug_printf("Vertex %u:\n", ii); |
} |
|
for (j = 0; j < draw->pt.nr_vertex_elements; j++) { |
uint buf = draw->pt.vertex_element[j].vertex_buffer_index; |
ubyte *ptr = (ubyte *) draw->pt.user.vbuffer[buf].map; |
|
if (draw->pt.vertex_element[j].instance_divisor) { |
ii = draw->instance_id / draw->pt.vertex_element[j].instance_divisor; |
} |
|
ptr += draw->pt.vertex_buffer[buf].buffer_offset; |
ptr += draw->pt.vertex_buffer[buf].stride * ii; |
ptr += draw->pt.vertex_element[j].src_offset; |
|
debug_printf(" Attr %u: ", j); |
switch (draw->pt.vertex_element[j].src_format) { |
case PIPE_FORMAT_R32_FLOAT: |
{ |
float *v = (float *) ptr; |
debug_printf("R %f @ %p\n", v[0], (void *) v); |
} |
break; |
case PIPE_FORMAT_R32G32_FLOAT: |
{ |
float *v = (float *) ptr; |
debug_printf("RG %f %f @ %p\n", v[0], v[1], (void *) v); |
} |
break; |
case PIPE_FORMAT_R32G32B32_FLOAT: |
{ |
float *v = (float *) ptr; |
debug_printf("RGB %f %f %f @ %p\n", v[0], v[1], v[2], (void *) v); |
} |
break; |
case PIPE_FORMAT_R32G32B32A32_FLOAT: |
{ |
float *v = (float *) ptr; |
debug_printf("RGBA %f %f %f %f @ %p\n", v[0], v[1], v[2], v[3], |
(void *) v); |
} |
break; |
case PIPE_FORMAT_B8G8R8A8_UNORM: |
{ |
ubyte *u = (ubyte *) ptr; |
debug_printf("BGRA %d %d %d %d @ %p\n", u[0], u[1], u[2], u[3], |
(void *) u); |
} |
break; |
case PIPE_FORMAT_A8R8G8B8_UNORM: |
{ |
ubyte *u = (ubyte *) ptr; |
debug_printf("ARGB %d %d %d %d @ %p\n", u[0], u[1], u[2], u[3], |
(void *) u); |
} |
break; |
default: |
debug_printf("other format %s (fix me)\n", |
util_format_name(draw->pt.vertex_element[j].src_format)); |
} |
} |
} |
} |
|
|
/** Helper code for below */ |
#define PRIM_RESTART_LOOP(elements) \ |
do { \ |
for (j = 0; j < count; j++) { \ |
i = draw_overflow_uadd(start, j, MAX_LOOP_IDX); \ |
if (i < elt_max && elements[i] == info->restart_index) { \ |
if (cur_count > 0) { \ |
/* draw elts up to prev pos */ \ |
draw_pt_arrays(draw, prim, cur_start, cur_count); \ |
} \ |
/* begin new prim at next elt */ \ |
cur_start = i + 1; \ |
cur_count = 0; \ |
} \ |
else { \ |
cur_count++; \ |
} \ |
} \ |
if (cur_count > 0) { \ |
draw_pt_arrays(draw, prim, cur_start, cur_count); \ |
} \ |
} while (0) |
|
|
/** |
* For drawing prims with primitive restart enabled. |
* Scan for restart indexes and draw the runs of elements/vertices between |
* the restarts. |
*/ |
static void |
draw_pt_arrays_restart(struct draw_context *draw, |
const struct pipe_draw_info *info) |
{ |
const unsigned prim = info->mode; |
const unsigned start = info->start; |
const unsigned count = info->count; |
const unsigned elt_max = draw->pt.user.eltMax; |
unsigned i, j, cur_start, cur_count; |
/* The largest index within a loop using the i variable as the index. |
* Used for overflow detection */ |
const unsigned MAX_LOOP_IDX = 0xffffffff; |
|
assert(info->primitive_restart); |
|
if (draw->pt.user.eltSize) { |
/* indexed prims (draw_elements) */ |
cur_start = start; |
cur_count = 0; |
|
switch (draw->pt.user.eltSize) { |
case 1: |
{ |
const ubyte *elt_ub = (const ubyte *) draw->pt.user.elts; |
PRIM_RESTART_LOOP(elt_ub); |
} |
break; |
case 2: |
{ |
const ushort *elt_us = (const ushort *) draw->pt.user.elts; |
PRIM_RESTART_LOOP(elt_us); |
} |
break; |
case 4: |
{ |
const uint *elt_ui = (const uint *) draw->pt.user.elts; |
PRIM_RESTART_LOOP(elt_ui); |
} |
break; |
default: |
assert(0 && "bad eltSize in draw_arrays()"); |
} |
} |
else { |
/* Non-indexed prims (draw_arrays). |
* Primitive restart should have been handled in the state tracker. |
*/ |
draw_pt_arrays(draw, prim, start, count); |
} |
} |
|
|
/** |
* Resolve true values within pipe_draw_info. |
* If we're rendering from transform feedback/stream output |
* buffers both the count and max_index need to be computed |
* from the attached stream output target. |
*/ |
static void |
resolve_draw_info(const struct pipe_draw_info *raw_info, |
struct pipe_draw_info *info) |
{ |
memcpy(info, raw_info, sizeof(struct pipe_draw_info)); |
|
if (raw_info->count_from_stream_output) { |
struct draw_so_target *target = |
(struct draw_so_target *)info->count_from_stream_output; |
info->count = target->emitted_vertices; |
|
/* Stream output draw can not be indexed */ |
debug_assert(!info->indexed); |
info->max_index = info->count - 1; |
} |
} |
|
/** |
* Draw vertex arrays. |
* This is the main entrypoint into the drawing module. If drawing an indexed |
* primitive, the draw_set_indexes() function should have already been called |
* to specify the element/index buffer information. |
*/ |
void |
draw_vbo(struct draw_context *draw, |
const struct pipe_draw_info *info) |
{ |
unsigned instance; |
unsigned index_limit; |
unsigned count; |
unsigned fpstate = util_fpstate_get(); |
struct pipe_draw_info resolved_info; |
|
/* Make sure that denorms are treated like zeros. This is |
* the behavior required by D3D10. OpenGL doesn't care. |
*/ |
util_fpstate_set_denorms_to_zero(fpstate); |
|
resolve_draw_info(info, &resolved_info); |
info = &resolved_info; |
|
assert(info->instance_count > 0); |
if (info->indexed) |
assert(draw->pt.user.elts); |
|
count = info->count; |
|
draw->pt.user.eltBias = info->index_bias; |
draw->pt.user.min_index = info->min_index; |
draw->pt.user.max_index = info->max_index; |
draw->pt.user.eltSize = info->indexed ? draw->pt.user.eltSizeIB : 0; |
|
if (0) |
debug_printf("draw_vbo(mode=%u start=%u count=%u):\n", |
info->mode, info->start, count); |
|
if (0) |
tgsi_dump(draw->vs.vertex_shader->state.tokens, 0); |
|
if (0) { |
unsigned int i; |
debug_printf("Elements:\n"); |
for (i = 0; i < draw->pt.nr_vertex_elements; i++) { |
debug_printf(" %u: src_offset=%u inst_div=%u vbuf=%u format=%s\n", |
i, |
draw->pt.vertex_element[i].src_offset, |
draw->pt.vertex_element[i].instance_divisor, |
draw->pt.vertex_element[i].vertex_buffer_index, |
util_format_name(draw->pt.vertex_element[i].src_format)); |
} |
debug_printf("Buffers:\n"); |
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) { |
debug_printf(" %u: stride=%u offset=%u size=%d ptr=%p\n", |
i, |
draw->pt.vertex_buffer[i].stride, |
draw->pt.vertex_buffer[i].buffer_offset, |
(int) draw->pt.user.vbuffer[i].size, |
draw->pt.user.vbuffer[i].map); |
} |
} |
|
if (0) |
draw_print_arrays(draw, info->mode, info->start, MIN2(count, 20)); |
|
index_limit = util_draw_max_index(draw->pt.vertex_buffer, |
draw->pt.vertex_element, |
draw->pt.nr_vertex_elements, |
info); |
#if HAVE_LLVM |
if (!draw->llvm) |
#endif |
{ |
if (index_limit == 0) { |
/* one of the buffers is too small to do any valid drawing */ |
debug_warning("draw: VBO too small to draw anything\n"); |
util_fpstate_set(fpstate); |
return; |
} |
} |
|
/* If we're collecting stats then make sure we start from scratch */ |
if (draw->collect_statistics) { |
memset(&draw->statistics, 0, sizeof(draw->statistics)); |
} |
|
draw->pt.max_index = index_limit - 1; |
|
/* |
* TODO: We could use draw->pt.max_index to further narrow |
* the min_index/max_index hints given by the state tracker. |
*/ |
|
for (instance = 0; instance < info->instance_count; instance++) { |
draw->instance_id = instance + info->start_instance; |
draw->start_instance = info->start_instance; |
/* check for overflow */ |
if (draw->instance_id < instance || |
draw->instance_id < info->start_instance) { |
/* if we overflown just set the instance id to the max */ |
draw->instance_id = 0xffffffff; |
} |
|
draw_new_instance(draw); |
|
if (info->primitive_restart) { |
draw_pt_arrays_restart(draw, info); |
} |
else { |
draw_pt_arrays(draw, info->mode, info->start, count); |
} |
} |
|
/* If requested emit the pipeline statistics for this run */ |
if (draw->collect_statistics) { |
draw->render->pipeline_statistics(draw->render, &draw->statistics); |
} |
util_fpstate_set(fpstate); |
} |