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llvmpipe: use llvm for attribute interpolant calculation 

Basically no change relative to hard-coded version, but this will
be useful for other changes later.
This commit is contained in:
Keith Whitwell 2010-09-05 13:17:43 +01:00
parent 3894fddccc
commit 5b4c43d985
22 changed files with 1315 additions and 716 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/gallium/drivers/llvmpipe/SConscript
View File

@ -61,16 +61,17 @@ llvmpipe = env.ConvenienceLibrary(
'lp_scene_queue.c',
'lp_screen.c',
'lp_setup.c',
'lp_setup_debug.c',
'lp_setup_line.c',
'lp_setup_point.c',
'lp_setup_tri.c',
'lp_setup_coef.c',
'lp_setup_coef_intrin.c',
'lp_setup_vbuf.c',
'lp_state_blend.c',
'lp_state_clip.c',
'lp_state_derived.c',
'lp_state_fs.c',
'lp_state_setup.c',
'lp_state_setup_fallback.c',
'lp_state_gs.c',
'lp_state_rasterizer.c',
'lp_state_sampler.c',

26
src/gallium/drivers/llvmpipe/lp_bld_interp.h
View File

@ -46,7 +46,31 @@
#include "tgsi/tgsi_exec.h"
#include "lp_setup.h"
/**
* Describes how to compute the interpolation coefficients (a0, dadx, dady)
* from the vertices passed into our triangle/line/point functions by the
* draw module.
*
* Vertices are treated as an array of float[4] values, indexed by
* src_index.
*
* LP_INTERP_COLOR is translated to either LP_INTERP_CONSTANT or
* LINEAR depending on flatshade state.
*/
enum lp_interp {
LP_INTERP_CONSTANT,
LP_INTERP_COLOR,
LP_INTERP_LINEAR,
LP_INTERP_PERSPECTIVE,
LP_INTERP_POSITION,
LP_INTERP_FACING
};
struct lp_shader_input {
ushort interp:4; /* enum lp_interp */
ushort usage_mask:4; /* bitmask of TGSI_WRITEMASK_x flags */
ushort src_index:8; /* where to find values in incoming vertices */
};
struct lp_build_interp_soa_context

3
src/gallium/drivers/llvmpipe/lp_context.c
View File

@ -82,6 +82,8 @@ static void llvmpipe_destroy( struct pipe_context *pipe )
}
}
lp_delete_setup_variants(llvmpipe);
align_free( llvmpipe );
}
@ -108,6 +110,7 @@ llvmpipe_create_context( struct pipe_screen *screen, void *priv )
memset(llvmpipe, 0, sizeof *llvmpipe);
make_empty_list(&llvmpipe->fs_variants_list);
make_empty_list(&llvmpipe->setup_variants_list);
llvmpipe->pipe.winsys = screen->winsys;
llvmpipe->pipe.screen = screen;

10
src/gallium/drivers/llvmpipe/lp_context.h
View File

@ -39,6 +39,7 @@
#include "lp_jit.h"
#include "lp_setup.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
struct llvmpipe_vbuf_render;
@ -48,6 +49,7 @@ struct lp_fragment_shader;
struct lp_vertex_shader;
struct lp_blend_state;
struct lp_setup_context;
struct lp_setup_variant;
struct lp_velems_state;
struct llvmpipe_context {
@ -105,12 +107,9 @@ struct llvmpipe_context {
/** Which vertex shader output slot contains point size */
int psize_slot;
/** Fragment shader input interpolation info */
unsigned num_inputs;
struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
/** The tiling engine */
struct lp_setup_context *setup;
struct lp_setup_variant setup_variant;
/** The primitive drawing context */
struct draw_context *draw;
@ -120,6 +119,9 @@ struct llvmpipe_context {
struct lp_fs_variant_list_item fs_variants_list;
unsigned nr_fs_variants;
struct lp_setup_variant_list_item setup_variants_list;
unsigned nr_setup_variants;
};

1
src/gallium/drivers/llvmpipe/lp_flush.h
View File

@ -32,6 +32,7 @@
struct pipe_context;
struct pipe_fence_handle;
struct pipe_resource;
void
llvmpipe_flush(struct pipe_context *pipe,

10
src/gallium/drivers/llvmpipe/lp_limits.h
View File

@ -72,4 +72,14 @@
*/
#define LP_MAX_SHADER_VARIANTS 1024
/**
* Max number of setup variants that will be kept around.
*
* These are determined by the combination of the fragment shader
* input signature and a small amount of rasterization state (eg
* flatshading). It is likely that many active fragment shaders will
* share the same setup variant.
*/
#define LP_MAX_SETUP_VARIANTS 64
#endif /* LP_LIMITS_H */

19
src/gallium/drivers/llvmpipe/lp_setup.c
View File

@ -500,14 +500,12 @@ lp_setup_set_point_state( struct lp_setup_context *setup,
}
void
lp_setup_set_fs_inputs( struct lp_setup_context *setup,
const struct lp_shader_input *input,
unsigned nr )
lp_setup_set_setup_variant( struct lp_setup_context *setup,
const struct lp_setup_variant *variant)
{
LP_DBG(DEBUG_SETUP, "%s %p %u\n", __FUNCTION__, (void *) input, nr);
memcpy( setup->fs.input, input, nr * sizeof input[0] );
setup->fs.nr_inputs = nr;
LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
setup->setup.variant = variant;
}
void
@ -863,6 +861,13 @@ lp_setup_update_state( struct lp_setup_context *setup,
setup->psize = lp->psize_slot;
assert(lp->dirty == 0);
assert(lp->setup_variant.key.size ==
setup->setup.variant->key.size);
assert(memcmp(&lp->setup_variant.key,
&setup->setup.variant->key,
setup->setup.variant->key.size) == 0);
}
if (update_scene)

29
src/gallium/drivers/llvmpipe/lp_setup.h
View File

@ -33,28 +33,6 @@
struct draw_context;
struct vertex_info;
enum lp_interp {
LP_INTERP_CONSTANT,
LP_INTERP_LINEAR,
LP_INTERP_PERSPECTIVE,
LP_INTERP_POSITION,
LP_INTERP_FACING
};
/**
* Describes how to compute the interpolation coefficients (a0, dadx, dady)
* from the vertices passed into our triangle/line/point functions by the
* draw module.
*
* Vertices are treated as an array of float[4] values, indexed by
* src_index.
*/
struct lp_shader_input {
enum lp_interp interp; /* how to interpolate values */
unsigned src_index; /* where to find values in incoming vertices */
unsigned usage_mask; /* bitmask of TGSI_WRITEMASK_x flags */
};
struct pipe_resource;
struct pipe_query;
@ -66,7 +44,7 @@ struct lp_fragment_shader_variant;
struct lp_jit_context;
struct llvmpipe_query;
struct pipe_fence_handle;
struct lp_setup_variant;
struct lp_setup_context *
lp_setup_create( struct pipe_context *pipe,
@ -110,9 +88,8 @@ lp_setup_set_point_state( struct lp_setup_context *setup,
uint sprite);
void
lp_setup_set_fs_inputs( struct lp_setup_context *setup,
const struct lp_shader_input *interp,
unsigned nr );
lp_setup_set_setup_variant( struct lp_setup_context *setup,
const struct lp_setup_variant *variant );
void
lp_setup_set_fs_variant( struct lp_setup_context *setup,

279
src/gallium/drivers/llvmpipe/lp_setup_coef.c
View File

@ -1,279 +0,0 @@
/**************************************************************************
*
* Copyright 2010, VMware.
* 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 VMWARE 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.
*
**************************************************************************/
/*
* Binning code for triangles
*/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "lp_perf.h"
#include "lp_setup_context.h"
#include "lp_setup_coef.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
#if !defined(PIPE_ARCH_SSE)
/**
* Compute a0 for a constant-valued coefficient (GL_FLAT shading).
*/
static void constant_coef( struct lp_rast_shader_inputs *inputs,
unsigned slot,
const float value,
unsigned i )
{
inputs->a0[slot][i] = value;
inputs->dadx[slot][i] = 0.0f;
inputs->dady[slot][i] = 0.0f;
}
static void linear_coef( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr,
unsigned i)
{
float a0 = info->v0[vert_attr][i];
float a1 = info->v1[vert_attr][i];
float a2 = info->v2[vert_attr][i];
float da01 = a0 - a1;
float da20 = a2 - a0;
float dadx = (da01 * info->dy20_ooa - info->dy01_ooa * da20);
float dady = (da20 * info->dx01_ooa - info->dx20_ooa * da01);
inputs->dadx[slot][i] = dadx;
inputs->dady[slot][i] = dady;
/* calculate a0 as the value which would be sampled for the
* fragment at (0,0), taking into account that we want to sample at
* pixel centers, in other words (0.5, 0.5).
*
* this is neat but unfortunately not a good way to do things for
* triangles with very large values of dadx or dady as it will
* result in the subtraction and re-addition from a0 of a very
* large number, which means we'll end up loosing a lot of the
* fractional bits and precision from a0. the way to fix this is
* to define a0 as the sample at a pixel center somewhere near vmin
* instead - i'll switch to this later.
*/
inputs->a0[slot][i] = a0 - (dadx * info->x0_center +
dady * info->y0_center);
}
/**
* Compute a0, dadx and dady for a perspective-corrected interpolant,
* for a triangle.
* We basically multiply the vertex value by 1/w before computing
* the plane coefficients (a0, dadx, dady).
* Later, when we compute the value at a particular fragment position we'll
* divide the interpolated value by the interpolated W at that fragment.
*/
static void perspective_coef( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr,
unsigned i)
{
/* premultiply by 1/w (v[0][3] is always 1/w):
*/
float a0 = info->v0[vert_attr][i] * info->v0[0][3];
float a1 = info->v1[vert_attr][i] * info->v1[0][3];
float a2 = info->v2[vert_attr][i] * info->v2[0][3];
float da01 = a0 - a1;
float da20 = a2 - a0;
float dadx = da01 * info->dy20_ooa - info->dy01_ooa * da20;
float dady = da20 * info->dx01_ooa - info->dx20_ooa * da01;
inputs->dadx[slot][i] = dadx;
inputs->dady[slot][i] = dady;
inputs->a0[slot][i] = a0 - (dadx * info->x0_center +
dady * info->y0_center);
}
/**
* Special coefficient setup for gl_FragCoord.
* X and Y are trivial
* Z and W are copied from position_coef which should have already been computed.
* We could do a bit less work if we'd examine gl_FragCoord's swizzle mask.
*/
static void
setup_fragcoord_coef(struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
unsigned usage_mask)
{
/*X*/
if (usage_mask & TGSI_WRITEMASK_X) {
inputs->a0[slot][0] = 0.0;
inputs->dadx[slot][0] = 1.0;
inputs->dady[slot][0] = 0.0;
}
/*Y*/
if (usage_mask & TGSI_WRITEMASK_Y) {
inputs->a0[slot][1] = 0.0;
inputs->dadx[slot][1] = 0.0;
inputs->dady[slot][1] = 1.0;
}
/*Z*/
if (usage_mask & TGSI_WRITEMASK_Z) {
linear_coef(inputs, info, slot, 0, 2);
}
/*W*/
if (usage_mask & TGSI_WRITEMASK_W) {
linear_coef(inputs, info, slot, 0, 3);
}
}
/**
* Setup the fragment input attribute with the front-facing value.
* \param frontface is the triangle front facing?
*/
static void setup_facing_coef( struct lp_rast_shader_inputs *inputs,
unsigned slot,
boolean frontface,
unsigned usage_mask)
{
/* convert TRUE to 1.0 and FALSE to -1.0 */
if (usage_mask & TGSI_WRITEMASK_X)
constant_coef( inputs, slot, 2.0f * frontface - 1.0f, 0 );
if (usage_mask & TGSI_WRITEMASK_Y)
constant_coef( inputs, slot, 0.0f, 1 ); /* wasted */
if (usage_mask & TGSI_WRITEMASK_Z)
constant_coef( inputs, slot, 0.0f, 2 ); /* wasted */
if (usage_mask & TGSI_WRITEMASK_W)
constant_coef( inputs, slot, 0.0f, 3 ); /* wasted */
}
/**
* Compute the tri->coef[] array dadx, dady, a0 values.
*/
void lp_setup_tri_coef( struct lp_setup_context *setup,
struct lp_rast_shader_inputs *inputs,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean frontfacing)
{
unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ;
unsigned slot;
unsigned i;
struct lp_tri_info info;
float dx01 = v0[0][0] - v1[0][0];
float dy01 = v0[0][1] - v1[0][1];
float dx20 = v2[0][0] - v0[0][0];
float dy20 = v2[0][1] - v0[0][1];
float oneoverarea = 1.0f / (dx01 * dy20 - dx20 * dy01);
info.v0 = v0;
info.v1 = v1;
info.v2 = v2;
info.frontfacing = frontfacing;
info.x0_center = v0[0][0] - setup->pixel_offset;
info.y0_center = v0[0][1] - setup->pixel_offset;
info.dx01_ooa = dx01 * oneoverarea;
info.dx20_ooa = dx20 * oneoverarea;
info.dy01_ooa = dy01 * oneoverarea;
info.dy20_ooa = dy20 * oneoverarea;
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < setup->fs.nr_inputs; slot++) {
unsigned vert_attr = setup->fs.input[slot].src_index;
unsigned usage_mask = setup->fs.input[slot].usage_mask;
switch (setup->fs.input[slot].interp) {
case LP_INTERP_CONSTANT:
if (setup->flatshade_first) {
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
constant_coef(inputs, slot+1, info.v0[vert_attr][i], i);
}
else {
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
constant_coef(inputs, slot+1, info.v2[vert_attr][i], i);
}
break;
case LP_INTERP_LINEAR:
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
linear_coef(inputs, &info, slot+1, vert_attr, i);
break;
case LP_INTERP_PERSPECTIVE:
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
perspective_coef(inputs, &info, slot+1, vert_attr, i);
fragcoord_usage_mask |= TGSI_WRITEMASK_W;
break;
case LP_INTERP_POSITION:
/*
* The generated pixel interpolators will pick up the coeffs from
* slot 0, so all need to ensure that the usage mask is covers all
* usages.
*/
fragcoord_usage_mask |= usage_mask;
break;
case LP_INTERP_FACING:
setup_facing_coef(inputs, slot+1, info.frontfacing, usage_mask);
break;
default:
assert(0);
}
}
/* The internal position input is in slot zero:
*/
setup_fragcoord_coef(inputs, &info, 0, fragcoord_usage_mask);
}
#else
extern void lp_setup_coef_dummy(void);
void lp_setup_coef_dummy(void)
{
}
#endif

64
src/gallium/drivers/llvmpipe/lp_setup_coef.h
View File

@ -1,64 +0,0 @@
/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* 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 VMWARE 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.
*
**************************************************************************/
/**
* The setup code is concerned with point/line/triangle setup and
* putting commands/data into the bins.
*/
#ifndef LP_SETUP_COEF_H
#define LP_SETUP_COEF_H
struct lp_tri_info {
float x0_center;
float y0_center;
/* turn these into an aligned float[4] */
float dy01_ooa;
float dy20_ooa;
float dx01_ooa;
float dx20_ooa;
const float (*v0)[4];
const float (*v1)[4];
const float (*v2)[4];
boolean frontfacing; /* remove eventually */
};
void lp_setup_tri_coef( struct lp_setup_context *setup,
struct lp_rast_shader_inputs *inputs,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean frontfacing);
#endif

228
src/gallium/drivers/llvmpipe/lp_setup_coef_intrin.c
View File

@ -1,228 +0,0 @@
/**************************************************************************
*
* Copyright 2010 VMware.
* 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 VMWARE 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.
*
**************************************************************************/
/*
* Binning code for triangles
*/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "lp_perf.h"
#include "lp_setup_context.h"
#include "lp_setup_coef.h"
#include "lp_rast.h"
#if defined(PIPE_ARCH_SSE)
#include <emmintrin.h>
static void constant_coef4( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
const float *attr)
{
*(__m128 *)inputs->a0[slot] = *(__m128 *)attr;
*(__m128 *)inputs->dadx[slot] = _mm_set1_ps(0.0);
*(__m128 *)inputs->dady[slot] = _mm_set1_ps(0.0);
}
/**
* Setup the fragment input attribute with the front-facing value.
* \param frontface is the triangle front facing?
*/
static void setup_facing_coef( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot )
{
/* XXX: just pass frontface directly to the shader, don't bother
* treating it as an input.
*/
__m128 a0 = _mm_setr_ps(info->frontfacing ? 1.0 : -1.0,
0, 0, 0);
*(__m128 *)inputs->a0[slot] = a0;
*(__m128 *)inputs->dadx[slot] = _mm_set1_ps(0.0);
*(__m128 *)inputs->dady[slot] = _mm_set1_ps(0.0);
}
static void calc_coef4( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
__m128 a0,
__m128 a1,
__m128 a2)
{
__m128 da01 = _mm_sub_ps(a0, a1);
__m128 da20 = _mm_sub_ps(a2, a0);
__m128 da01_dy20_ooa = _mm_mul_ps(da01, _mm_set1_ps(info->dy20_ooa));
__m128 da20_dy01_ooa = _mm_mul_ps(da20, _mm_set1_ps(info->dy01_ooa));
__m128 dadx = _mm_sub_ps(da01_dy20_ooa, da20_dy01_ooa);
__m128 da01_dx20_ooa = _mm_mul_ps(da01, _mm_set1_ps(info->dx20_ooa));
__m128 da20_dx01_ooa = _mm_mul_ps(da20, _mm_set1_ps(info->dx01_ooa));
__m128 dady = _mm_sub_ps(da20_dx01_ooa, da01_dx20_ooa);
__m128 dadx_x0 = _mm_mul_ps(dadx, _mm_set1_ps(info->x0_center));
__m128 dady_y0 = _mm_mul_ps(dady, _mm_set1_ps(info->y0_center));
__m128 attr_v0 = _mm_add_ps(dadx_x0, dady_y0);
__m128 attr_0 = _mm_sub_ps(a0, attr_v0);
*(__m128 *)inputs->a0[slot] = attr_0;
*(__m128 *)inputs->dadx[slot] = dadx;
*(__m128 *)inputs->dady[slot] = dady;
}
static void linear_coef( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr)
{
__m128 a0 = *(const __m128 *)info->v0[vert_attr];
__m128 a1 = *(const __m128 *)info->v1[vert_attr];
__m128 a2 = *(const __m128 *)info->v2[vert_attr];
calc_coef4(inputs, info, slot, a0, a1, a2);
}
/**
* Compute a0, dadx and dady for a perspective-corrected interpolant,
* for a triangle.
* We basically multiply the vertex value by 1/w before computing
* the plane coefficients (a0, dadx, dady).
* Later, when we compute the value at a particular fragment position we'll
* divide the interpolated value by the interpolated W at that fragment.
*/
static void perspective_coef( struct lp_rast_shader_inputs *inputs,
const struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr)
{
/* premultiply by 1/w (v[0][3] is always 1/w):
*/
__m128 a0 = *(const __m128 *)info->v0[vert_attr];
__m128 a1 = *(const __m128 *)info->v1[vert_attr];
__m128 a2 = *(const __m128 *)info->v2[vert_attr];
__m128 a0_oow = _mm_mul_ps(a0, _mm_set1_ps(info->v0[0][3]));
__m128 a1_oow = _mm_mul_ps(a1, _mm_set1_ps(info->v1[0][3]));
__m128 a2_oow = _mm_mul_ps(a2, _mm_set1_ps(info->v2[0][3]));
calc_coef4(inputs, info, slot, a0_oow, a1_oow, a2_oow);
}
/**
* Compute the inputs-> dadx, dady, a0 values.
*/
void lp_setup_tri_coef( struct lp_setup_context *setup,
struct lp_rast_shader_inputs *inputs,
const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean frontfacing)
{
unsigned slot;
struct lp_tri_info info;
float dx01 = v0[0][0] - v1[0][0];
float dy01 = v0[0][1] - v1[0][1];
float dx20 = v2[0][0] - v0[0][0];
float dy20 = v2[0][1] - v0[0][1];
float oneoverarea = 1.0f / (dx01 * dy20 - dx20 * dy01);
info.v0 = v0;
info.v1 = v1;
info.v2 = v2;
info.frontfacing = frontfacing;
info.x0_center = v0[0][0] - setup->pixel_offset;
info.y0_center = v0[0][1] - setup->pixel_offset;
info.dx01_ooa = dx01 * oneoverarea;
info.dx20_ooa = dx20 * oneoverarea;
info.dy01_ooa = dy01 * oneoverarea;
info.dy20_ooa = dy20 * oneoverarea;
/* The internal position input is in slot zero:
*/
linear_coef(inputs, &info, 0, 0);
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < setup->fs.nr_inputs; slot++) {
unsigned vert_attr = setup->fs.input[slot].src_index;
switch (setup->fs.input[slot].interp) {
case LP_INTERP_CONSTANT:
if (setup->flatshade_first) {
constant_coef4(inputs, &info, slot+1, info.v0[vert_attr]);
}
else {
constant_coef4(inputs, &info, slot+1, info.v2[vert_attr]);
}
break;
case LP_INTERP_LINEAR:
linear_coef(inputs, &info, slot+1, vert_attr);
break;
case LP_INTERP_PERSPECTIVE:
perspective_coef(inputs, &info, slot+1, vert_attr);
break;
case LP_INTERP_POSITION:
/*
* The generated pixel interpolators will pick up the coeffs from
* slot 0.
*/
break;
case LP_INTERP_FACING:
setup_facing_coef(inputs, &info, slot+1);
break;
default:
assert(0);
}
}
}
#else
extern void lp_setup_coef_dummy(void);
void lp_setup_coef_dummy(void)
{
}
#endif

12
src/gallium/drivers/llvmpipe/lp_setup_context.h
View File

@ -39,6 +39,7 @@
#include "lp_rast.h"
#include "lp_tile_soa.h" /* for TILE_SIZE */
#include "lp_scene.h"
#include "lp_bld_interp.h" /* for struct lp_shader_input */
#include "draw/draw_vbuf.h"
#include "util/u_rect.h"
@ -49,6 +50,8 @@
#define LP_SETUP_NEW_SCISSOR 0x08
struct lp_setup_variant;
/** Max number of scenes */
#define MAX_SCENES 2
@ -118,9 +121,6 @@ struct lp_setup_context
} state;
struct {
struct lp_shader_input input[PIPE_MAX_ATTRIBS];
unsigned nr_inputs;
const struct lp_rast_state *stored; /**< what's in the scene */
struct lp_rast_state current; /**< currently set state */
struct pipe_resource *current_tex[PIPE_MAX_SAMPLERS];
@ -139,6 +139,10 @@ struct lp_setup_context
} blend_color;
struct {
const struct lp_setup_variant *variant;
} setup;
unsigned dirty; /**< bitmask of LP_SETUP_NEW_x bits */
void (*point)( struct lp_setup_context *,
@ -181,7 +185,7 @@ lp_setup_print_vertex(struct lp_setup_context *setup,
struct lp_rast_triangle *
lp_setup_alloc_triangle(struct lp_scene *scene,
unsigned nr_inputs,
unsigned num_inputs,
unsigned nr_planes,
unsigned *tri_size);

20
src/gallium/drivers/llvmpipe/lp_setup_line.c
View File

@ -35,6 +35,7 @@
#include "lp_setup_context.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
#define NUM_CHANNELS 4
@ -162,19 +163,20 @@ static void setup_line_coefficients( struct lp_setup_context *setup,
struct lp_rast_triangle *tri,
struct lp_line_info *info)
{
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ;
unsigned slot;
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < setup->fs.nr_inputs; slot++) {
unsigned vert_attr = setup->fs.input[slot].src_index;
unsigned usage_mask = setup->fs.input[slot].usage_mask;
for (slot = 0; slot < key->num_inputs; slot++) {
unsigned vert_attr = key->inputs[slot].src_index;
unsigned usage_mask = key->inputs[slot].usage_mask;
unsigned i;
switch (setup->fs.input[slot].interp) {
switch (key->inputs[slot].interp) {
case LP_INTERP_CONSTANT:
if (setup->flatshade_first) {
if (key->flatshade_first) {
for (i = 0; i < NUM_CHANNELS; i++)
if (usage_mask & (1 << i))
constant_coef(setup, tri, slot+1, info->v1[vert_attr][i], i);
@ -235,14 +237,15 @@ print_line(struct lp_setup_context *setup,
const float (*v1)[4],
const float (*v2)[4])
{
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
uint i;
debug_printf("llvmpipe line\n");
for (i = 0; i < 1 + setup->fs.nr_inputs; i++) {
for (i = 0; i < 1 + key->num_inputs; i++) {
debug_printf(" v1[%d]: %f %f %f %f\n", i,
v1[i][0], v1[i][1], v1[i][2], v1[i][3]);
}
for (i = 0; i < 1 + setup->fs.nr_inputs; i++) {
for (i = 0; i < 1 + key->num_inputs; i++) {
debug_printf(" v2[%d]: %f %f %f %f\n", i,
v2[i][0], v2[i][1], v2[i][2], v2[i][3]);
}
@ -269,6 +272,7 @@ try_setup_line( struct lp_setup_context *setup,
const float (*v2)[4])
{
struct lp_scene *scene = setup->scene;
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
struct lp_rast_triangle *line;
struct lp_line_info info;
float width = MAX2(1.0, setup->line_width);
@ -548,7 +552,7 @@ try_setup_line( struct lp_setup_context *setup,
u_rect_find_intersection(&setup->draw_region, &bbox);
line = lp_setup_alloc_triangle(scene,
setup->fs.nr_inputs,
key->num_inputs,
nr_planes,
&tri_bytes);
if (!line)

13
src/gallium/drivers/llvmpipe/lp_setup_point.c
View File

@ -36,6 +36,7 @@
#include "lp_setup_context.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
#include "tgsi/tgsi_scan.h"
#define NUM_CHANNELS 4
@ -152,17 +153,18 @@ setup_point_coefficients( struct lp_setup_context *setup,
struct lp_rast_triangle *point,
const struct point_info *info)
{
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ;
unsigned slot;
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < setup->fs.nr_inputs; slot++) {
unsigned vert_attr = setup->fs.input[slot].src_index;
unsigned usage_mask = setup->fs.input[slot].usage_mask;
for (slot = 0; slot < key->num_inputs; slot++) {
unsigned vert_attr = key->inputs[slot].src_index;
unsigned usage_mask = key->inputs[slot].usage_mask;
unsigned i;
switch (setup->fs.input[slot].interp) {
switch (key->inputs[slot].interp) {
case LP_INTERP_POSITION:
/*
* The generated pixel interpolators will pick up the coeffs from
@ -215,6 +217,7 @@ try_setup_point( struct lp_setup_context *setup,
const float (*v0)[4] )
{
/* x/y positions in fixed point */
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
const int sizeAttr = setup->psize;
const float size
= (setup->point_size_per_vertex && sizeAttr > 0) ? v0[sizeAttr][0]
@ -266,7 +269,7 @@ try_setup_point( struct lp_setup_context *setup,
u_rect_find_intersection(&setup->draw_region, &bbox);
point = lp_setup_alloc_triangle(scene,
setup->fs.nr_inputs,
key->num_inputs,
nr_planes,
&bytes);
if (!point)

42
src/gallium/drivers/llvmpipe/lp_setup_tri.c
View File

@ -34,9 +34,9 @@
#include "util/u_rect.h"
#include "lp_perf.h"
#include "lp_setup_context.h"
#include "lp_setup_coef.h"
#include "lp_rast.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
#define NUM_CHANNELS 4
@ -65,16 +65,16 @@ fixed_to_float(int a)
* immediately after it.
* The memory is allocated from the per-scene pool, not per-tile.
* \param tri_size returns number of bytes allocated
* \param nr_inputs number of fragment shader inputs
* \param num_inputs number of fragment shader inputs
* \return pointer to triangle space
*/
struct lp_rast_triangle *
lp_setup_alloc_triangle(struct lp_scene *scene,
unsigned nr_inputs,
unsigned num_inputs,
unsigned nr_planes,
unsigned *tri_size)
{
unsigned input_array_sz = NUM_CHANNELS * (nr_inputs + 1) * sizeof(float);
unsigned input_array_sz = NUM_CHANNELS * (num_inputs + 1) * sizeof(float);
struct lp_rast_triangle *tri;
unsigned tri_bytes, bytes;
char *inputs;
@ -101,25 +101,26 @@ lp_setup_print_vertex(struct lp_setup_context *setup,
const char *name,
const float (*v)[4])
{
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
int i, j;
debug_printf(" wpos (%s[0]) xyzw %f %f %f %f\n",
name,
v[0][0], v[0][1], v[0][2], v[0][3]);
for (i = 0; i < setup->fs.nr_inputs; i++) {
const float *in = v[setup->fs.input[i].src_index];
for (i = 0; i < key->num_inputs; i++) {
const float *in = v[key->inputs[i].src_index];
debug_printf(" in[%d] (%s[%d]) %s%s%s%s ",
i,
name, setup->fs.input[i].src_index,
(setup->fs.input[i].usage_mask & 0x1) ? "x" : " ",
(setup->fs.input[i].usage_mask & 0x2) ? "y" : " ",
(setup->fs.input[i].usage_mask & 0x4) ? "z" : " ",
(setup->fs.input[i].usage_mask & 0x8) ? "w" : " ");
name, key->inputs[i].src_index,
(key->inputs[i].usage_mask & 0x1) ? "x" : " ",
(key->inputs[i].usage_mask & 0x2) ? "y" : " ",
(key->inputs[i].usage_mask & 0x4) ? "z" : " ",
(key->inputs[i].usage_mask & 0x8) ? "w" : " ");
for (j = 0; j < 4; j++)
if (setup->fs.input[i].usage_mask & (1<<j))
if (key->inputs[i].usage_mask & (1<<j))
debug_printf("%.5f ", in[j]);
debug_printf("\n");
@ -224,6 +225,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
boolean frontfacing )
{
struct lp_scene *scene = setup->scene;
const struct lp_setup_variant_key *key = &setup->setup.variant->key;
struct lp_rast_triangle *tri;
int x[3];
int y[3];
@ -288,7 +290,7 @@ do_triangle_ccw(struct lp_setup_context *setup,
u_rect_find_intersection(&setup->draw_region, &bbox);
tri = lp_setup_alloc_triangle(scene,
setup->fs.nr_inputs,
key->num_inputs,
nr_planes,
&tri_bytes);
if (!tri)
@ -328,13 +330,25 @@ do_triangle_ccw(struct lp_setup_context *setup,
/* Setup parameter interpolants:
*/
lp_setup_tri_coef( setup, &tri->inputs, v0, v1, v2, frontfacing );
setup->setup.variant->jit_function( v0,
v1,
v2,
frontfacing,
tri->inputs.a0,
tri->inputs.dadx,
tri->inputs.dady,
&setup->setup.variant->key );
tri->inputs.facing = frontfacing ? 1.0F : -1.0F;
tri->inputs.disable = FALSE;
tri->inputs.opaque = setup->fs.current.variant->opaque;
tri->inputs.state = setup->fs.stored;
if (0)
lp_dump_setup_coef(&setup->setup.variant->key,
(const float (*)[4])tri->inputs.a0,
(const float (*)[4])tri->inputs.dadx,
(const float (*)[4])tri->inputs.dady);
for (i = 0; i < 3; i++) {
struct lp_rast_plane *plane = &tri->plane[i];

3
src/gallium/drivers/llvmpipe/lp_state.h
View File

@ -97,6 +97,9 @@ llvmpipe_set_framebuffer_state(struct pipe_context *,
void
llvmpipe_update_fs(struct llvmpipe_context *lp);
void
llvmpipe_update_setup(struct llvmpipe_context *lp);
void
llvmpipe_update_derived(struct llvmpipe_context *llvmpipe);

69
src/gallium/drivers/llvmpipe/lp_state_derived.c
View File

@ -50,12 +50,13 @@ compute_vertex_info(struct llvmpipe_context *llvmpipe)
{
const struct lp_fragment_shader *lpfs = llvmpipe->fs;
struct vertex_info *vinfo = &llvmpipe->vertex_info;
struct lp_shader_input *inputs = llvmpipe->inputs;
unsigned vs_index;
uint i;
/*
* Match FS inputs against VS outputs, emitting the necessary attributes.
* Match FS inputs against VS outputs, emitting the necessary
* attributes. Could cache these structs and look them up with a
* combination of fragment shader, vertex shader ids.
*/
vinfo->num_attribs = 0;
@ -74,64 +75,10 @@ compute_vertex_info(struct llvmpipe_context *llvmpipe)
vs_index = draw_find_shader_output(llvmpipe->draw,
lpfs->info.input_semantic_name[i],
lpfs->info.input_semantic_index[i]);
if (vs_index < 0) {
/*
* This can happen with sprite coordinates - the vertex
* shader doesn't need to provide an output as we generate
* them internally. However, lets keep pretending that there
* is something there to not confuse other code.
*/
vs_index = 0;
}
/* This can be pre-computed, except for flatshade:
*/
inputs[i].usage_mask = lpfs->info.input_usage_mask[i];
switch (lpfs->info.input_interpolate[i]) {
case TGSI_INTERPOLATE_CONSTANT:
inputs[i].interp = LP_INTERP_CONSTANT;
break;
case TGSI_INTERPOLATE_LINEAR:
inputs[i].interp = LP_INTERP_LINEAR;
break;
case TGSI_INTERPOLATE_PERSPECTIVE:
inputs[i].interp = LP_INTERP_PERSPECTIVE;
break;
default:
assert(0);
break;
}
switch (lpfs->info.input_semantic_name[i]) {
case TGSI_SEMANTIC_FACE:
inputs[i].interp = LP_INTERP_FACING;
break;
case TGSI_SEMANTIC_POSITION:
/* Position was already emitted above
*/
inputs[i].interp = LP_INTERP_POSITION;
inputs[i].src_index = 0;
continue;
case TGSI_SEMANTIC_COLOR:
/* Colors are linearly inputs[i].interpolated in the fragment shader
* even when flatshading is active. This just tells the
* setup module to use coefficients with ddx==0 and
* ddy==0.
*/
if (llvmpipe->rasterizer->flatshade)
inputs[i].interp = LP_INTERP_CONSTANT;
break;
default:
break;
}
/*
* Emit the requested fs attribute for all but position.
*/
inputs[i].src_index = vinfo->num_attribs;
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, vs_index);
}
@ -145,15 +92,9 @@ compute_vertex_info(struct llvmpipe_context *llvmpipe)
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT, vs_index);
}
llvmpipe->num_inputs = lpfs->info.num_inputs;
draw_compute_vertex_size(vinfo);
lp_setup_set_vertex_info(llvmpipe->setup, vinfo);
lp_setup_set_fs_inputs(llvmpipe->setup,
inputs,
lpfs->info.num_inputs);
}
@ -190,6 +131,10 @@ void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
LP_NEW_QUERY))
llvmpipe_update_fs( llvmpipe );
if (llvmpipe->dirty & (LP_NEW_FS |
LP_NEW_RASTERIZER))
llvmpipe_update_setup( llvmpipe );
if (llvmpipe->dirty & LP_NEW_BLEND_COLOR)
lp_setup_set_blend_color(llvmpipe->setup,
&llvmpipe->blend_color);

80
src/gallium/drivers/llvmpipe/lp_state_fs.c
View File

@ -255,8 +255,7 @@ generate_quad_mask(LLVMBuilderRef builder,
* \param partial_mask if 1, do mask_input testing
*/
static void
generate_fs(struct llvmpipe_context *lp,
struct lp_fragment_shader *shader,
generate_fs(struct lp_fragment_shader *shader,
const struct lp_fragment_shader_variant_key *key,
LLVMBuilderRef builder,
struct lp_type type,
@ -468,13 +467,13 @@ generate_blend(const struct pipe_blend_state *blend,
* 2x2 pixels.
*/
static void
generate_fragment(struct llvmpipe_context *lp,
generate_fragment(struct llvmpipe_screen *screen,
struct lp_fragment_shader *shader,
struct lp_fragment_shader_variant *variant,
unsigned partial_mask)
{
struct llvmpipe_screen *screen = llvmpipe_screen(lp->pipe.screen);
const struct lp_fragment_shader_variant_key *key = &variant->key;
struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
char func_name[256];
struct lp_type fs_type;
struct lp_type blend_type;
@ -507,6 +506,18 @@ generate_fragment(struct llvmpipe_context *lp,
unsigned chan;
unsigned cbuf;
/* Adjust color input interpolation according to flatshade state:
*/
memcpy(inputs, shader->inputs, shader->info.num_inputs * sizeof inputs[0]);
for (i = 0; i < shader->info.num_inputs; i++) {
if (inputs[i].interp == LP_INTERP_COLOR) {
if (key->flatshade)
inputs[i].interp = LP_INTERP_CONSTANT;
else
inputs[i].interp = LP_INTERP_LINEAR;
}
}
/* TODO: actually pick these based on the fs and color buffer
* characteristics. */
@ -558,7 +569,6 @@ generate_fragment(struct llvmpipe_context *lp,
variant->function[partial_mask] = function;
/* XXX: need to propagate noalias down into color param now we are
* passing a pointer-to-pointer?
*/
@ -606,8 +616,8 @@ generate_fragment(struct llvmpipe_context *lp,
* already included in the shader key.
*/
lp_build_interp_soa_init(&interp,
lp->num_inputs,
lp->inputs,
shader->info.num_inputs,
inputs,
builder, fs_type,
a0_ptr, dadx_ptr, dady_ptr,
x, y);
@ -626,7 +636,7 @@ generate_fragment(struct llvmpipe_context *lp,
depth_ptr_i = LLVMBuildGEP(builder, depth_ptr, &index, 1, "");
generate_fs(lp, shader, key,
generate_fs(shader, key,
builder,
fs_type,
context_ptr,
@ -823,7 +833,7 @@ lp_debug_fs_variant(const struct lp_fragment_shader_variant *variant)
}
static struct lp_fragment_shader_variant *
generate_variant(struct llvmpipe_context *lp,
generate_variant(struct llvmpipe_screen *screen,
struct lp_fragment_shader *shader,
const struct lp_fragment_shader_variant_key *key)
{
@ -869,11 +879,11 @@ generate_variant(struct llvmpipe_context *lp,
lp_debug_fs_variant(variant);
}
generate_fragment(lp, shader, variant, RAST_EDGE_TEST);
generate_fragment(screen, shader, variant, RAST_EDGE_TEST);
if (variant->opaque) {
/* Specialized shader, which doesn't need to read the color buffer. */
generate_fragment(lp, shader, variant, RAST_WHOLE);
generate_fragment(screen, shader, variant, RAST_WHOLE);
} else {
variant->jit_function[RAST_WHOLE] = variant->jit_function[RAST_EDGE_TEST];
}
@ -888,6 +898,7 @@ llvmpipe_create_fs_state(struct pipe_context *pipe,
{
struct lp_fragment_shader *shader;
int nr_samplers;
int i;
shader = CALLOC_STRUCT(lp_fragment_shader);
if (!shader)
@ -907,6 +918,46 @@ llvmpipe_create_fs_state(struct pipe_context *pipe,
shader->variant_key_size = Offset(struct lp_fragment_shader_variant_key,
sampler[nr_samplers]);
for (i = 0; i < shader->info.num_inputs; i++) {
shader->inputs[i].usage_mask = shader->info.input_usage_mask[i];
switch (shader->info.input_interpolate[i]) {
case TGSI_INTERPOLATE_CONSTANT:
shader->inputs[i].interp = LP_INTERP_CONSTANT;
break;
case TGSI_INTERPOLATE_LINEAR:
shader->inputs[i].interp = LP_INTERP_LINEAR;
break;
case TGSI_INTERPOLATE_PERSPECTIVE:
shader->inputs[i].interp = LP_INTERP_PERSPECTIVE;
break;
default:
assert(0);
break;
}
switch (shader->info.input_semantic_name[i]) {
case TGSI_SEMANTIC_COLOR:
/* Colors may be either linearly or constant interpolated in
* the fragment shader, but that information isn't available
* here. Mark color inputs and fix them up later.
*/
shader->inputs[i].interp = LP_INTERP_COLOR;
break;
case TGSI_SEMANTIC_FACE:
shader->inputs[i].interp = LP_INTERP_FACING;
break;
case TGSI_SEMANTIC_POSITION:
/* Position was already emitted above
*/
shader->inputs[i].interp = LP_INTERP_POSITION;
shader->inputs[i].src_index = 0;
continue;
}
shader->inputs[i].src_index = i+1;
}
if (LP_DEBUG & DEBUG_TGSI) {
unsigned attrib;
debug_printf("llvmpipe: Create fragment shader #%u %p:\n", shader->no, (void *) shader);
@ -1161,6 +1212,7 @@ make_variant_key(struct llvmpipe_context *lp,
void
llvmpipe_update_fs(struct llvmpipe_context *lp)
{
struct llvmpipe_screen *screen = llvmpipe_screen(lp->pipe.screen);
struct lp_fragment_shader *shader = lp->fs;
struct lp_fragment_shader_variant_key key;
struct lp_fragment_shader_variant *variant = NULL;
@ -1201,7 +1253,7 @@ llvmpipe_update_fs(struct llvmpipe_context *lp)
}
t0 = os_time_get();
variant = generate_variant(lp, shader, &key);
variant = generate_variant(screen, shader, &key);
t1 = os_time_get();
dt = t1 - t0;
@ -1221,6 +1273,10 @@ llvmpipe_update_fs(struct llvmpipe_context *lp)
void
llvmpipe_init_fs_funcs(struct llvmpipe_context *llvmpipe)
{

4
src/gallium/drivers/llvmpipe/lp_state_fs.h
View File

@ -34,6 +34,7 @@
#include "pipe/p_state.h"
#include "tgsi/tgsi_scan.h" /* for tgsi_shader_info */
#include "gallivm/lp_bld_sample.h" /* for struct lp_sampler_static_state */
#include "lp_bld_interp.h" /* for struct lp_shader_input */
struct tgsi_token;
@ -105,6 +106,9 @@ struct lp_fragment_shader
unsigned no;
unsigned variants_created;
unsigned variants_cached;
/** Fragment shader input interpolation info */
struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
};

768
src/gallium/drivers/llvmpipe/lp_state_setup.c Normal file
View File

@ -0,0 +1,768 @@
/**************************************************************************
*
* Copyright 2010 VMware.
* 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 VMWARE 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.
*
**************************************************************************/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_simple_list.h"
#include "os/os_time.h"
#include "gallivm/lp_bld_debug.h"
#include "gallivm/lp_bld_init.h"
#include "gallivm/lp_bld_intr.h"
#include <llvm-c/Analysis.h> /* for LLVMVerifyFunction */
#include "lp_perf.h"
#include "lp_debug.h"
#include "lp_flush.h"
#include "lp_screen.h"
#include "lp_context.h"
#include "lp_setup_context.h"
#include "lp_rast.h"
#include "lp_state.h"
#include "lp_state_fs.h"
#include "lp_state_setup.h"
/* currently organized to interpolate full float[4] attributes even
* when some elements are unused. Later, can pack vertex data more
* closely.
*/
struct lp_setup_args
{
/* Function arguments:
*/
LLVMValueRef v0;
LLVMValueRef v1;
LLVMValueRef v2;
LLVMValueRef facing; /* boolean */
LLVMValueRef a0;
LLVMValueRef dadx;
LLVMValueRef dady;
/* Derived:
*/
LLVMValueRef x0_center;
LLVMValueRef y0_center;
LLVMValueRef dy20_ooa;
LLVMValueRef dy01_ooa;
LLVMValueRef dx20_ooa;
LLVMValueRef dx01_ooa;
};
static LLVMTypeRef type4f(void)
{
return LLVMVectorType(LLVMFloatType(), 4);
}
/* Equivalent of _mm_setr_ps(a,b,c,d)
*/
static LLVMValueRef vec4f(LLVMBuilderRef bld,
LLVMValueRef a, LLVMValueRef b, LLVMValueRef c, LLVMValueRef d,
const char *name)
{
LLVMValueRef i0 = LLVMConstInt(LLVMInt32Type(), 0, 0);
LLVMValueRef i1 = LLVMConstInt(LLVMInt32Type(), 1, 0);
LLVMValueRef i2 = LLVMConstInt(LLVMInt32Type(), 2, 0);
LLVMValueRef i3 = LLVMConstInt(LLVMInt32Type(), 3, 0);
LLVMValueRef res = LLVMGetUndef(type4f());
res = LLVMBuildInsertElement(bld, res, a, i0, "");
res = LLVMBuildInsertElement(bld, res, b, i1, "");
res = LLVMBuildInsertElement(bld, res, c, i2, "");
res = LLVMBuildInsertElement(bld, res, d, i3, name);
return res;
}
/* Equivalent of _mm_set1_ps(a)
*/
static LLVMValueRef vec4f_from_scalar(LLVMBuilderRef bld,
LLVMValueRef a,
const char *name)
{
LLVMValueRef res = LLVMGetUndef(type4f());
int i;
for(i = 0; i < 4; ++i) {
LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0);
res = LLVMBuildInsertElement(bld, res, a, index, i == 3 ? name : "");
}
return res;
}
static void
store_coef(LLVMBuilderRef builder,
struct lp_setup_args *args,
unsigned slot,
LLVMValueRef a0,
LLVMValueRef dadx,
LLVMValueRef dady)
{
LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), slot, 0);
LLVMBuildStore(builder,
a0,
LLVMBuildGEP(builder, args->a0, &idx, 1, ""));
LLVMBuildStore(builder,
dadx,
LLVMBuildGEP(builder, args->dadx, &idx, 1, ""));
LLVMBuildStore(builder,
dady,
LLVMBuildGEP(builder, args->dady, &idx, 1, ""));
}
static void
emit_constant_coef4( LLVMBuilderRef builder,
struct lp_setup_args *args,
unsigned slot,
LLVMValueRef vert,
unsigned attr)
{
LLVMValueRef zero = LLVMConstReal(LLVMFloatType(), 0.0);
LLVMValueRef zerovec = vec4f_from_scalar(builder, zero, "zero");
LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), attr, 0);
LLVMValueRef attr_ptr = LLVMBuildGEP(builder, vert, &idx, 1, "attr_ptr");
LLVMValueRef vert_attr = LLVMBuildLoad(builder, attr_ptr, "vert_attr");
store_coef(builder, args, slot, vert_attr, zerovec, zerovec);
}
/**
* Setup the fragment input attribute with the front-facing value.
* \param frontface is the triangle front facing?
*/
static void
emit_facing_coef( LLVMBuilderRef builder,
struct lp_setup_args *args,
unsigned slot )
{
LLVMValueRef a0_0 = args->facing;
LLVMValueRef zero = LLVMConstReal(LLVMFloatType(), 0.0);
LLVMValueRef a0 = vec4f(builder, a0_0, zero, zero, zero, "facing");
LLVMValueRef zerovec = vec4f_from_scalar(builder, zero, "zero");
store_coef(builder, args, slot, a0, zerovec, zerovec);
}
static LLVMValueRef
vert_attrib(LLVMBuilderRef b,
LLVMValueRef vert,
int attr,
int elem,
const char *name)
{
LLVMValueRef idx[2];
idx[0] = LLVMConstInt(LLVMInt32Type(), attr, 0);
idx[1] = LLVMConstInt(LLVMInt32Type(), elem, 0);
return LLVMBuildLoad(b, LLVMBuildGEP(b, vert, idx, 2, ""), name);
}
static void
emit_coef4( LLVMBuilderRef b,
struct lp_setup_args *args,
unsigned slot,
LLVMValueRef a0,
LLVMValueRef a1,
LLVMValueRef a2)
{
LLVMValueRef dy20_ooa = args->dy20_ooa;
LLVMValueRef dy01_ooa = args->dy01_ooa;
LLVMValueRef dx20_ooa = args->dx20_ooa;
LLVMValueRef dx01_ooa = args->dx01_ooa;
LLVMValueRef x0_center = args->x0_center;
LLVMValueRef y0_center = args->y0_center;
/* XXX: using fsub, fmul on vector types -- does this work??
*/
LLVMValueRef da01 = LLVMBuildFSub(b, a0, a1, "da01");
LLVMValueRef da20 = LLVMBuildFSub(b, a2, a0, "da20");
/* Calculate dadx (vec4f)
*/
LLVMValueRef da01_dy20_ooa = LLVMBuildFMul(b, da01, dy20_ooa, "da01_dy20_ooa");
LLVMValueRef da20_dy01_ooa = LLVMBuildFMul(b, da20, dy01_ooa, "da20_dy01_ooa");
LLVMValueRef dadx = LLVMBuildFSub(b, da01_dy20_ooa, da20_dy01_ooa, "dadx");
/* Calculate dady (vec4f)
*/
LLVMValueRef da01_dx20_ooa = LLVMBuildFMul(b, da01, dx20_ooa, "da01_dx20_ooa");
LLVMValueRef da20_dx01_ooa = LLVMBuildFMul(b, da20, dx01_ooa, "da20_dx01_ooa");
LLVMValueRef dady = LLVMBuildFSub(b, da20_dx01_ooa, da01_dx20_ooa, "dady");
/* Calculate a0 - the attribute value at the origin
*/
LLVMValueRef dadx_x0 = LLVMBuildFMul(b, dadx, x0_center, "dadx_x0");
LLVMValueRef dady_y0 = LLVMBuildFMul(b, dady, y0_center, "dady_y0");
LLVMValueRef attr_v0 = LLVMBuildFAdd(b, dadx_x0, dady_y0, "attr_v0");
LLVMValueRef attr_0 = LLVMBuildFSub(b, a0, attr_v0, "attr_0");
store_coef(b, args, slot, attr_0, dadx, dady);
}
static void
emit_linear_coef( LLVMBuilderRef b,
struct lp_setup_args *args,
unsigned slot,
unsigned vert_attr)
{
LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), vert_attr, 0);
LLVMValueRef a0 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a");
LLVMValueRef a1 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a");
LLVMValueRef a2 = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a");
emit_coef4(b, args, slot, a0, a1, a2);
}
/**
* Compute a0, dadx and dady for a perspective-corrected interpolant,
* for a triangle.
* We basically multiply the vertex value by 1/w before computing
* the plane coefficients (a0, dadx, dady).
* Later, when we compute the value at a particular fragment position we'll
* divide the interpolated value by the interpolated W at that fragment.
*/
static void
emit_perspective_coef( LLVMBuilderRef b,
struct lp_setup_args *args,
unsigned slot,
unsigned vert_attr)
{
/* premultiply by 1/w (v[0][3] is always 1/w):
*/
LLVMValueRef idx = LLVMConstInt(LLVMInt32Type(), vert_attr, 0);
LLVMValueRef v0a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v0, &idx, 1, ""), "v0a");
LLVMValueRef v1a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v1, &idx, 1, ""), "v1a");
LLVMValueRef v2a = LLVMBuildLoad(b, LLVMBuildGEP(b, args->v2, &idx, 1, ""), "v2a");
LLVMValueRef v0_oow = vec4f_from_scalar(b, vert_attrib(b, args->v0, 0, 3, ""), "v0_oow");
LLVMValueRef v1_oow = vec4f_from_scalar(b, vert_attrib(b, args->v1, 0, 3, ""), "v1_oow");
LLVMValueRef v2_oow = vec4f_from_scalar(b, vert_attrib(b, args->v2, 0, 3, ""), "v2_oow");
LLVMValueRef v0_oow_v0a = LLVMBuildFMul(b, v0a, v0_oow, "v0_oow_v0a");
LLVMValueRef v1_oow_v1a = LLVMBuildFMul(b, v1a, v1_oow, "v1_oow_v1a");
LLVMValueRef v2_oow_v2a = LLVMBuildFMul(b, v2a, v2_oow, "v2_oow_v2a");
emit_coef4(b, args, slot, v0_oow_v0a, v1_oow_v1a, v2_oow_v2a);
}
static void
emit_position_coef( LLVMBuilderRef builder,
struct lp_setup_args *args,
int slot, int attrib )
{
emit_linear_coef(builder, args, slot, attrib);
}
/**
* Compute the inputs-> dadx, dady, a0 values.
*/
static void
emit_tri_coef( LLVMBuilderRef builder,
const struct lp_setup_variant_key *key,
struct lp_setup_args *args )
{
unsigned slot;
/* The internal position input is in slot zero:
*/
emit_position_coef(builder, args, 0, 0);
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < key->num_inputs; slot++) {
unsigned vert_attr = key->inputs[slot].src_index;
switch (key->inputs[slot].interp) {
case LP_INTERP_CONSTANT:
if (key->flatshade_first) {
emit_constant_coef4(builder, args, slot+1, args->v0, vert_attr);
}
else {
emit_constant_coef4(builder, args, slot+1, args->v2, vert_attr);
}
break;
case LP_INTERP_LINEAR:
emit_linear_coef(builder, args, slot+1, vert_attr);
break;
case LP_INTERP_PERSPECTIVE:
emit_perspective_coef(builder, args, slot+1, vert_attr);
break;
case LP_INTERP_POSITION:
/*
* The generated pixel interpolators will pick up the coeffs from
* slot 0.
*/
break;
case LP_INTERP_FACING:
emit_facing_coef(builder, args, slot+1);
break;
default:
assert(0);
}
}
}
/* XXX: This is generic code, share with fs/vs codegen:
*/
static lp_jit_setup_triangle
finalize_function(struct llvmpipe_screen *screen,
LLVMBuilderRef builder,
LLVMValueRef function)
{
void *f;
/* Verify the LLVM IR. If invalid, dump and abort */
#ifdef DEBUG
if (LLVMVerifyFunction(function, LLVMPrintMessageAction)) {
if (1)
lp_debug_dump_value(function);
abort();
}
#endif
/* Apply optimizations to LLVM IR */
LLVMRunFunctionPassManager(screen->pass, function);
if (gallivm_debug & GALLIVM_DEBUG_IR)
{
/* Print the LLVM IR to stderr */
lp_debug_dump_value(function);
debug_printf("\n");
}
/*
* Translate the LLVM IR into machine code.
*/
f = LLVMGetPointerToGlobal(screen->engine, function);
if (gallivm_debug & GALLIVM_DEBUG_ASM)
{
lp_disassemble(f);
}
lp_func_delete_body(function);
return f;
}
/* XXX: Generic code:
*/
static void
lp_emit_emms(LLVMBuilderRef builder)
{
#ifdef PIPE_ARCH_X86
/* Avoid corrupting the FPU stack on 32bit OSes. */
lp_build_intrinsic(builder, "llvm.x86.mmx.emms", LLVMVoidType(), NULL, 0);
#endif
}
/* XXX: generic code:
*/
static void
set_noalias(LLVMBuilderRef builder,
LLVMValueRef function,
const LLVMTypeRef *arg_types,
int nr_args)
{
int i;
for(i = 0; i < Elements(arg_types); ++i)
if(LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
LLVMAddAttribute(LLVMGetParam(function, i),
LLVMNoAliasAttribute);
}
static void
init_args(LLVMBuilderRef b,
struct lp_setup_args *args,
const struct lp_setup_variant *variant)
{
LLVMValueRef v0_x = vert_attrib(b, args->v0, 0, 0, "v0_x");
LLVMValueRef v0_y = vert_attrib(b, args->v0, 0, 1, "v0_y");
LLVMValueRef v1_x = vert_attrib(b, args->v1, 0, 0, "v1_x");
LLVMValueRef v1_y = vert_attrib(b, args->v1, 0, 1, "v1_y");
LLVMValueRef v2_x = vert_attrib(b, args->v2, 0, 0, "v2_x");
LLVMValueRef v2_y = vert_attrib(b, args->v2, 0, 1, "v2_y");
LLVMValueRef pixel_center = LLVMConstReal(LLVMFloatType(),
variant->key.pixel_center_half ? 0.5 : 0);
LLVMValueRef x0_center = LLVMBuildFSub(b, v0_x, pixel_center, "x0_center" );
LLVMValueRef y0_center = LLVMBuildFSub(b, v0_y, pixel_center, "y0_center" );
LLVMValueRef dx01 = LLVMBuildFSub(b, v0_x, v1_x, "dx01");
LLVMValueRef dy01 = LLVMBuildFSub(b, v0_y, v1_y, "dy01");
LLVMValueRef dx20 = LLVMBuildFSub(b, v2_x, v0_x, "dx20");
LLVMValueRef dy20 = LLVMBuildFSub(b, v2_y, v0_y, "dy20");
LLVMValueRef one = LLVMConstReal(LLVMFloatType(), 1.0);
LLVMValueRef e = LLVMBuildFMul(b, dx01, dy20, "e");
LLVMValueRef f = LLVMBuildFMul(b, dx20, dy01, "f");
LLVMValueRef ooa = LLVMBuildFDiv(b, one, LLVMBuildFSub(b, e, f, ""), "ooa");
LLVMValueRef dy20_ooa = LLVMBuildFMul(b, dy20, ooa, "dy20_ooa");
LLVMValueRef dy01_ooa = LLVMBuildFMul(b, dy01, ooa, "dy01_ooa");
LLVMValueRef dx20_ooa = LLVMBuildFMul(b, dx20, ooa, "dx20_ooa");
LLVMValueRef dx01_ooa = LLVMBuildFMul(b, dx01, ooa, "dx01_ooa");
args->dy20_ooa = vec4f_from_scalar(b, dy20_ooa, "dy20_ooa_4f");
args->dy01_ooa = vec4f_from_scalar(b, dy01_ooa, "dy01_ooa_4f");
args->dx20_ooa = vec4f_from_scalar(b, dx20_ooa, "dx20_ooa_4f");
args->dx01_ooa = vec4f_from_scalar(b, dx01_ooa, "dx01_ooa_4f");
args->x0_center = vec4f_from_scalar(b, x0_center, "x0_center_4f");
args->y0_center = vec4f_from_scalar(b, y0_center, "y0_center_4f");
}
/**
* Generate the runtime callable function for the coefficient calculation.
*
*/
static struct lp_setup_variant *
generate_setup_variant(struct llvmpipe_screen *screen,
struct lp_setup_variant_key *key)
{
struct lp_setup_variant *variant = NULL;
struct lp_setup_args args;
char func_name[256];
LLVMTypeRef vec4f_type;
LLVMTypeRef func_type;
LLVMTypeRef arg_types[8];
LLVMBasicBlockRef block;
LLVMBuilderRef builder;
int64_t t0, t1;
if (0)
goto fail;
variant = CALLOC_STRUCT(lp_setup_variant);
if (variant == NULL)
goto fail;
if (LP_DEBUG & DEBUG_COUNTERS) {
t0 = os_time_get();
}
memcpy(&variant->key, key, key->size);
variant->list_item_global.base = variant;
util_snprintf(func_name, sizeof(func_name), "fs%u_setup%u",
0,
variant->no);
/* Currently always deal with full 4-wide vertex attributes from
* the vertices.
*/
vec4f_type = LLVMVectorType(LLVMFloatType(), 4);
arg_types[0] = LLVMPointerType(vec4f_type, 0); /* v0 */
arg_types[1] = LLVMPointerType(vec4f_type, 0); /* v1 */
arg_types[2] = LLVMPointerType(vec4f_type, 0); /* v2 */
arg_types[3] = LLVMInt32Type(); /* facing */
arg_types[4] = LLVMPointerType(vec4f_type, 0); /* a0, aligned */
arg_types[5] = LLVMPointerType(vec4f_type, 0); /* dadx, aligned */
arg_types[6] = LLVMPointerType(vec4f_type, 0); /* dady, aligned */
arg_types[7] = LLVMPointerType(LLVMVoidType(), 0); /* key, unused */
func_type = LLVMFunctionType(LLVMVoidType(), arg_types, Elements(arg_types), 0);
variant->function = LLVMAddFunction(screen->module, func_name, func_type);
if (!variant->function)
goto fail;
LLVMSetFunctionCallConv(variant->function, LLVMCCallConv);
args.v0 = LLVMGetParam(variant->function, 0);
args.v1 = LLVMGetParam(variant->function, 1);
args.v2 = LLVMGetParam(variant->function, 2);
args.facing = LLVMGetParam(variant->function, 3);
args.a0 = LLVMGetParam(variant->function, 4);
args.dadx = LLVMGetParam(variant->function, 5);
args.dady = LLVMGetParam(variant->function, 6);
lp_build_name(args.v0, "in_v0");
lp_build_name(args.v1, "in_v1");
lp_build_name(args.v2, "in_v2");
lp_build_name(args.facing, "in_facing");
lp_build_name(args.a0, "out_a0");
lp_build_name(args.dadx, "out_dadx");
lp_build_name(args.dady, "out_dady");
/*
* Function body
*/
block = LLVMAppendBasicBlock(variant->function, "entry");
builder = LLVMCreateBuilder();
LLVMPositionBuilderAtEnd(builder, block);
set_noalias(builder, variant->function, arg_types, Elements(arg_types));
init_args(builder, &args, variant);
emit_tri_coef(builder, &variant->key, &args);
lp_emit_emms(builder);
LLVMBuildRetVoid(builder);
LLVMDisposeBuilder(builder);
variant->jit_function = finalize_function(screen, builder,
variant->function);
if (!variant->jit_function)
goto fail;
/*
* Update timing information:
*/
if (LP_DEBUG & DEBUG_COUNTERS) {
t1 = os_time_get();
LP_COUNT_ADD(llvm_compile_time, t1 - t0);
LP_COUNT_ADD(nr_llvm_compiles, 1);
}
return variant;
fail:
if (variant) {
if (variant->function) {
if (variant->jit_function)
LLVMFreeMachineCodeForFunction(screen->engine,
variant->function);
LLVMDeleteFunction(variant->function);
}
FREE(variant);
}
return NULL;
}
static void
lp_make_setup_variant_key(struct llvmpipe_context *lp,
struct lp_setup_variant_key *key)
{
struct lp_fragment_shader *fs = lp->fs;
unsigned i;
assert(sizeof key->inputs[0] == sizeof(ushort));
key->num_inputs = fs->info.num_inputs;
key->flatshade_first = lp->rasterizer->flatshade_first;
key->pixel_center_half = lp->rasterizer->gl_rasterization_rules;
key->size = Offset(struct lp_setup_variant_key,
inputs[key->num_inputs]);
key->pad = 0;
memcpy(key->inputs, fs->inputs, key->num_inputs * sizeof key->inputs[0]);
for (i = 0; i < key->num_inputs; i++) {
if (key->inputs[i].interp == LP_INTERP_COLOR) {
if (lp->rasterizer->flatshade)
key->inputs[i].interp = LP_INTERP_CONSTANT;
else
key->inputs[i].interp = LP_INTERP_LINEAR;
}
}
}
static void
remove_setup_variant(struct llvmpipe_context *lp,
struct lp_setup_variant *variant)
{
struct llvmpipe_screen *screen = llvmpipe_screen(lp->pipe.screen);
if (gallivm_debug & GALLIVM_DEBUG_IR) {
debug_printf("llvmpipe: del setup_variant #%u total %u\n",
variant->no, lp->nr_setup_variants);
}
if (variant->function) {
if (variant->jit_function)
LLVMFreeMachineCodeForFunction(screen->engine,
variant->function);
LLVMDeleteFunction(variant->function);
}
remove_from_list(&variant->list_item_global);
lp->nr_setup_variants--;
FREE(variant);
}
/* When the number of setup variants exceeds a threshold, cull a
* fraction (currently a quarter) of them.
*/
static void
cull_setup_variants(struct llvmpipe_context *lp)
{
struct pipe_context *pipe = &lp->pipe;
int i;
/*
* XXX: we need to flush the context until we have some sort of reference
* counting in fragment shaders as they may still be binned
* Flushing alone might not be sufficient we need to wait on it too.
*/
llvmpipe_finish(pipe, __FUNCTION__);
for (i = 0; i < LP_MAX_SETUP_VARIANTS / 4; i++) {
struct lp_setup_variant_list_item *item = last_elem(&lp->setup_variants_list);
remove_setup_variant(lp, item->base);
}
}
/**
* Update fragment/vertex shader linkage state. This is called just
* prior to drawing something when some fragment-related state has
* changed.
*/
void
llvmpipe_update_setup(struct llvmpipe_context *lp)
{
struct llvmpipe_screen *screen = llvmpipe_screen(lp->pipe.screen);
struct lp_setup_variant_key *key = &lp->setup_variant.key;
struct lp_setup_variant *variant = NULL;
struct lp_setup_variant_list_item *li;
lp_make_setup_variant_key(lp, key);
foreach(li, &lp->setup_variants_list) {
if(li->base->key.size == key->size &&
memcmp(&li->base->key, key, key->size) == 0) {
variant = li->base;
break;
}
}
if (variant) {
move_to_head(&lp->setup_variants_list, &variant->list_item_global);
}
else {
if (lp->nr_setup_variants >= LP_MAX_SETUP_VARIANTS) {
cull_setup_variants(lp);
}
variant = generate_setup_variant(screen, key);
if (variant) {
insert_at_head(&lp->setup_variants_list, &variant->list_item_global);
lp->nr_setup_variants++;
}
else {
/* Keep the old path around for debugging, and also perhaps
* in case malloc fails during compilation.
*/
variant = &lp->setup_variant;
variant->jit_function = lp_setup_tri_fallback;
}
}
lp_setup_set_setup_variant(lp->setup,
variant);
}
void
lp_delete_setup_variants(struct llvmpipe_context *lp)
{
struct lp_setup_variant_list_item *li;
li = first_elem(&lp->setup_variants_list);
while(!at_end(&lp->setup_variants_list, li)) {
struct lp_setup_variant_list_item *next = next_elem(li);
remove_setup_variant(lp, li->base);
li = next;
}
}
void
lp_dump_setup_coef( const struct lp_setup_variant_key *key,
const float (*sa0)[4],
const float (*sdadx)[4],
const float (*sdady)[4])
{
int i, slot;
for (i = 0; i < NUM_CHANNELS; i++) {
float a0 = sa0 [0][i];
float dadx = sdadx[0][i];
float dady = sdady[0][i];
debug_printf("POS.%c: a0 = %f, dadx = %f, dady = %f\n",
"xyzw"[i],
a0, dadx, dady);
}
for (slot = 0; slot < key->num_inputs; slot++) {
unsigned usage_mask = key->inputs[slot].usage_mask;
for (i = 0; i < NUM_CHANNELS; i++) {
if (usage_mask & (1 << i)) {
float a0 = sa0 [1 + slot][i];
float dadx = sdadx[1 + slot][i];
float dady = sdady[1 + slot][i];
debug_printf("IN[%u].%c: a0 = %f, dadx = %f, dady = %f\n",
slot,
"xyzw"[i],
a0, dadx, dady);
}
}
}
}

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src/gallium/drivers/llvmpipe/lp_state_setup.h Normal file
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#ifndef LP_STATE_SETUP_H
#define LP_STATE_SETUP_H
#include "lp_bld_interp.h"
struct llvmpipe_context;
struct lp_setup_variant;
struct lp_setup_variant_list_item
{
struct lp_setup_variant *base;
struct lp_setup_variant_list_item *next, *prev;
};
struct lp_setup_variant_key {
unsigned num_inputs:8;
unsigned flatshade_first:1;
unsigned pixel_center_half:1;
unsigned pad:7;
unsigned size:16;
struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
};
typedef void (*lp_jit_setup_triangle)( const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean front_facing,
float (*a0)[4],
float (*dadx)[4],
float (*dady)[4],
const struct lp_setup_variant_key *key );
/* At this stage, for a given variant key, we create a
* draw_vertex_info struct telling the draw module how to format the
* vertices, and an llvm-generated function which calculates the
* attribute interpolants (a0, dadx, dady) from three of those
* vertices.
*/
struct lp_setup_variant {
struct lp_setup_variant_key key;
struct lp_setup_variant_list_item list_item_global;
/* XXX: this is a pointer to the LLVM IR. Once jit_function is
* generated, we never need to use the IR again - need to find a
* way to release this data without destroying the generated
* assembly.
*/
LLVMValueRef function;
/* The actual generated setup function:
*/
lp_jit_setup_triangle jit_function;
unsigned no;
};
void lp_setup_tri_fallback( const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean front_facing,
float (*a0)[4],
float (*dadx)[4],
float (*dady)[4],
const struct lp_setup_variant_key *key );
void lp_delete_setup_variants(struct llvmpipe_context *lp);
void
lp_dump_setup_coef( const struct lp_setup_variant_key *key,
const float (*sa0)[4],
const float (*sdadx)[4],
const float (*sdady)[4]);
#endif

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/**************************************************************************
*
* Copyright 2010, VMware.
* 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 VMWARE 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.
*
**************************************************************************/
/*
* Fallback (non-llvm) path for triangle setup. Will remove once llvm
* is up and running.
*
* TODO: line/point setup.
*/
#include "util/u_math.h"
#include "util/u_memory.h"
#include "lp_state_setup.h"
#if defined(PIPE_ARCH_SSE)
#include <emmintrin.h>
struct setup_args {
float (*a0)[4]; /* aligned */
float (*dadx)[4]; /* aligned */
float (*dady)[4]; /* aligned */
float x0_center;
float y0_center;
/* turn these into an aligned float[4] */
float dy01_ooa;
float dy20_ooa;
float dx01_ooa;
float dx20_ooa;
const float (*v0)[4]; /* aligned */
const float (*v1)[4]; /* aligned */
const float (*v2)[4]; /* aligned */
boolean frontfacing; /* remove eventually */
};
static void constant_coef4( struct setup_args *args,
unsigned slot,
const float *attr)
{
*(__m128 *)args->a0[slot] = *(__m128 *)attr;
*(__m128 *)args->dadx[slot] = _mm_set1_ps(0.0);
*(__m128 *)args->dady[slot] = _mm_set1_ps(0.0);
}
/**
* Setup the fragment input attribute with the front-facing value.
* \param frontface is the triangle front facing?
*/
static void setup_facing_coef( struct setup_args *args,
unsigned slot )
{
/* XXX: just pass frontface directly to the shader, don't bother
* treating it as an input.
*/
__m128 a0 = _mm_setr_ps(args->frontfacing ? 1.0 : -1.0,
0, 0, 0);
*(__m128 *)args->a0[slot] = a0;
*(__m128 *)args->dadx[slot] = _mm_set1_ps(0.0);
*(__m128 *)args->dady[slot] = _mm_set1_ps(0.0);
}
static void calc_coef4( struct setup_args *args,
unsigned slot,
__m128 a0,
__m128 a1,
__m128 a2)
{
__m128 da01 = _mm_sub_ps(a0, a1);
__m128 da20 = _mm_sub_ps(a2, a0);
__m128 da01_dy20_ooa = _mm_mul_ps(da01, _mm_set1_ps(args->dy20_ooa));
__m128 da20_dy01_ooa = _mm_mul_ps(da20, _mm_set1_ps(args->dy01_ooa));
__m128 dadx = _mm_sub_ps(da01_dy20_ooa, da20_dy01_ooa);
__m128 da01_dx20_ooa = _mm_mul_ps(da01, _mm_set1_ps(args->dx20_ooa));
__m128 da20_dx01_ooa = _mm_mul_ps(da20, _mm_set1_ps(args->dx01_ooa));
__m128 dady = _mm_sub_ps(da20_dx01_ooa, da01_dx20_ooa);
__m128 dadx_x0 = _mm_mul_ps(dadx, _mm_set1_ps(args->x0_center));
__m128 dady_y0 = _mm_mul_ps(dady, _mm_set1_ps(args->y0_center));
__m128 attr_v0 = _mm_add_ps(dadx_x0, dady_y0);
__m128 attr_0 = _mm_sub_ps(a0, attr_v0);
*(__m128 *)args->a0[slot] = attr_0;
*(__m128 *)args->dadx[slot] = dadx;
*(__m128 *)args->dady[slot] = dady;
}
static void linear_coef( struct setup_args *args,
unsigned slot,
unsigned vert_attr)
{
__m128 a0 = *(const __m128 *)args->v0[vert_attr];
__m128 a1 = *(const __m128 *)args->v1[vert_attr];
__m128 a2 = *(const __m128 *)args->v2[vert_attr];
calc_coef4(args, slot, a0, a1, a2);
}
/**
* Compute a0, dadx and dady for a perspective-corrected interpolant,
* for a triangle.
* We basically multiply the vertex value by 1/w before computing
* the plane coefficients (a0, dadx, dady).
* Later, when we compute the value at a particular fragment position we'll
* divide the interpolated value by the interpolated W at that fragment.
*/
static void perspective_coef( struct setup_args *args,
unsigned slot,
unsigned vert_attr)
{
/* premultiply by 1/w (v[0][3] is always 1/w):
*/
__m128 a0 = *(const __m128 *)args->v0[vert_attr];
__m128 a1 = *(const __m128 *)args->v1[vert_attr];
__m128 a2 = *(const __m128 *)args->v2[vert_attr];
__m128 a0_oow = _mm_mul_ps(a0, _mm_set1_ps(args->v0[0][3]));
__m128 a1_oow = _mm_mul_ps(a1, _mm_set1_ps(args->v1[0][3]));
__m128 a2_oow = _mm_mul_ps(a2, _mm_set1_ps(args->v2[0][3]));
calc_coef4(args, slot, a0_oow, a1_oow, a2_oow);
}
/**
* Compute the args-> dadx, dady, a0 values.
*
* Note that this was effectively a little interpreted program, where
* the opcodes were LP_INTERP_*. This is the program which is now
* being code-generated in lp_state_setup.c.
*/
void lp_setup_tri_fallback( const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean front_facing,
float (*a0)[4],
float (*dadx)[4],
float (*dady)[4],
const struct lp_setup_variant_key *key )
{
struct setup_args args;
float pixel_offset = key->pixel_center_half ? 0.5 : 0.0;
float dx01 = v0[0][0] - v1[0][0];
float dy01 = v0[0][1] - v1[0][1];
float dx20 = v2[0][0] - v0[0][0];
float dy20 = v2[0][1] - v0[0][1];
float oneoverarea = 1.0f / (dx01 * dy20 - dx20 * dy01);
unsigned slot;
args.v0 = v0;
args.v1 = v1;
args.v2 = v2;
args.frontfacing = front_facing;
args.a0 = a0;
args.dadx = dadx;
args.dady = dady;
args.x0_center = v0[0][0] - pixel_offset;
args.y0_center = v0[0][1] - pixel_offset;
args.dx01_ooa = dx01 * oneoverarea;
args.dx20_ooa = dx20 * oneoverarea;
args.dy01_ooa = dy01 * oneoverarea;
args.dy20_ooa = dy20 * oneoverarea;
/* The internal position input is in slot zero:
*/
linear_coef(&args, 0, 0);
/* setup interpolation for all the remaining attributes:
*/
for (slot = 0; slot < key->num_inputs; slot++) {
unsigned vert_attr = key->inputs[slot].src_index;
switch (key->inputs[slot].interp) {
case LP_INTERP_CONSTANT:
if (key->flatshade_first) {
constant_coef4(&args, slot+1, args.v0[vert_attr]);
}
else {
constant_coef4(&args, slot+1, args.v2[vert_attr]);
}
break;
case LP_INTERP_LINEAR:
linear_coef(&args, slot+1, vert_attr);
break;
case LP_INTERP_PERSPECTIVE:
perspective_coef(&args, slot+1, vert_attr);
break;
case LP_INTERP_POSITION:
/*
* The generated pixel interpolators will pick up the coeffs from
* slot 0.
*/
break;
case LP_INTERP_FACING:
setup_facing_coef(&args, slot+1);
break;
default:
assert(0);
}
}
}
#else
void lp_setup_tri_fallback( const float (*v0)[4],
const float (*v1)[4],
const float (*v2)[4],
boolean front_facing,
float (*a0)[4],
float (*dadx)[4],
float (*dady)[4],
const struct lp_setup_variant_key *key )
{
/* this path for debugging only, don't need a non-sse version. */
}
#endif