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fuchsia/third_party/mesa/098259aa18f70ac3e1baf5b5d7aed073b70114db/./src/gallium/drivers/i915/i915_state.c
blob: cb5db6208af6d302b2fbd9e389a2cfaeaf66d364 [file]
/**************************************************************************
*
* Copyright 2007 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.
*
**************************************************************************/
/* Authors: Keith Whitwell <keithw@vmware.com>
*/
#include "compiler/nir/nir_builder.h"
#include "draw/draw_context.h"
#include "nir/nir_to_tgsi.h"
#include "tgsi/tgsi_parse.h"
#include "util/u_helpers.h"
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_transfer.h"
#include "nir.h"
#include "i915_context.h"
#include "i915_fpc.h"
#include "i915_reg.h"
#include "i915_resource.h"
#include "i915_state.h"
#include "i915_state_inlines.h"
/* The i915 (and related graphics cores) do not support GL_CLAMP. The
* Intel drivers for "other operating systems" implement GL_CLAMP as
* GL_CLAMP_TO_EDGE, so the same is done here.
*/
static unsigned
translate_wrap_mode(unsigned wrap)
{
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return TEXCOORDMODE_WRAP;
case PIPE_TEX_WRAP_CLAMP:
return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
return TEXCOORDMODE_CLAMP_EDGE;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return TEXCOORDMODE_CLAMP_BORDER;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
return TEXCOORDMODE_MIRROR;
default:
return TEXCOORDMODE_WRAP;
}
}
static unsigned
translate_img_filter(unsigned filter)
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST:
return FILTER_NEAREST;
case PIPE_TEX_FILTER_LINEAR:
return FILTER_LINEAR;
default:
assert(0);
return FILTER_NEAREST;
}
}
static unsigned
translate_mip_filter(unsigned filter)
{
switch (filter) {
case PIPE_TEX_MIPFILTER_NONE:
return MIPFILTER_NONE;
case PIPE_TEX_MIPFILTER_NEAREST:
return MIPFILTER_NEAREST;
case PIPE_TEX_MIPFILTER_LINEAR:
return MIPFILTER_LINEAR;
default:
assert(0);
return MIPFILTER_NONE;
}
}
static uint32_t
i915_remap_lis6_blend_dst_alpha(uint32_t lis6, uint32_t normal, uint32_t inv)
{
uint32_t src = (lis6 >> S6_CBUF_SRC_BLEND_FACT_SHIFT) & BLENDFACT_MASK;
lis6 &= ~SRC_BLND_FACT(BLENDFACT_MASK);
if (src == BLENDFACT_DST_ALPHA)
src = normal;
else if (src == BLENDFACT_INV_DST_ALPHA)
src = inv;
lis6 |= SRC_BLND_FACT(src);
uint32_t dst = (lis6 >> S6_CBUF_DST_BLEND_FACT_SHIFT) & BLENDFACT_MASK;
lis6 &= ~DST_BLND_FACT(BLENDFACT_MASK);
if (dst == BLENDFACT_DST_ALPHA)
dst = normal;
else if (dst == BLENDFACT_INV_DST_ALPHA)
dst = inv;
lis6 |= DST_BLND_FACT(dst);
return lis6;
}
static uint32_t
i915_remap_iab_blend_dst_alpha(uint32_t iab, uint32_t normal, uint32_t inv)
{
uint32_t src = (iab >> IAB_SRC_FACTOR_SHIFT) & BLENDFACT_MASK;
iab &= ~SRC_BLND_FACT(BLENDFACT_MASK);
if (src == BLENDFACT_DST_ALPHA)
src = normal;
else if (src == BLENDFACT_INV_DST_ALPHA)
src = inv;
iab |= SRC_ABLND_FACT(src);
uint32_t dst = (iab >> IAB_DST_FACTOR_SHIFT) & BLENDFACT_MASK;
iab &= ~DST_BLND_FACT(BLENDFACT_MASK);
if (dst == BLENDFACT_DST_ALPHA)
dst = normal;
else if (dst == BLENDFACT_INV_DST_ALPHA)
dst = inv;
iab |= DST_ABLND_FACT(dst);
return iab;
}
/* None of this state is actually used for anything yet.
*/
static void *
i915_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *blend)
{
struct i915_blend_state *cso_data = CALLOC_STRUCT(i915_blend_state);
{
unsigned eqRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
unsigned eqA = blend->rt[0].alpha_func;
unsigned srcA = blend->rt[0].alpha_src_factor;
unsigned dstA = blend->rt[0].alpha_dst_factor;
/* Special handling for MIN/MAX filter modes handled at
* frontend level.
*/
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
IAB_MODIFY_ENABLE | IAB_ENABLE | IAB_MODIFY_FUNC |
IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR |
SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) |
DST_ABLND_FACT(i915_translate_blend_factor(dstA)) |
(i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT));
} else {
cso_data->iab =
(_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | 0);
}
}
cso_data->modes4 |=
(_3DSTATE_MODES_4_CMD | ENABLE_LOGIC_OP_FUNC |
LOGIC_OP_FUNC(i915_translate_logic_op(blend->logicop_func)));
if (blend->logicop_enable)
cso_data->LIS5 |= S5_LOGICOP_ENABLE;
if (blend->dither)
cso_data->LIS5 |= S5_COLOR_DITHER_ENABLE;
/* We potentially do some fixup at emission for non-BGRA targets */
if ((blend->rt[0].colormask & PIPE_MASK_R) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_RED;
if ((blend->rt[0].colormask & PIPE_MASK_G) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_GREEN;
if ((blend->rt[0].colormask & PIPE_MASK_B) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_BLUE;
if ((blend->rt[0].colormask & PIPE_MASK_A) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_ALPHA;
if (blend->rt[0].blend_enable) {
unsigned funcRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
cso_data->LIS6 |=
(S6_CBUF_BLEND_ENABLE |
SRC_BLND_FACT(i915_translate_blend_factor(srcRGB)) |
DST_BLND_FACT(i915_translate_blend_factor(dstRGB)) |
(i915_translate_blend_func(funcRGB) << S6_CBUF_BLEND_FUNC_SHIFT));
}
cso_data->LIS6_alpha_in_g = i915_remap_lis6_blend_dst_alpha(
cso_data->LIS6, BLENDFACT_DST_COLR, BLENDFACT_INV_DST_COLR);
cso_data->LIS6_alpha_is_x = i915_remap_lis6_blend_dst_alpha(
cso_data->LIS6, BLENDFACT_ONE, BLENDFACT_ZERO);
cso_data->iab_alpha_in_g = i915_remap_iab_blend_dst_alpha(
cso_data->iab, BLENDFACT_DST_COLR, BLENDFACT_INV_DST_COLR);
cso_data->iab_alpha_is_x = i915_remap_iab_blend_dst_alpha(
cso_data->iab, BLENDFACT_ONE, BLENDFACT_ZERO);
return cso_data;
}
static void
i915_bind_blend_state(struct pipe_context *pipe, void *blend)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->blend == blend)
return;
i915->blend = (struct i915_blend_state *)blend;
i915->dirty |= I915_NEW_BLEND;
}
static void
i915_delete_blend_state(struct pipe_context *pipe, void *blend)
{
FREE(blend);
}
static void
i915_set_blend_color(struct pipe_context *pipe,
const struct pipe_blend_color *blend_color)
{
struct i915_context *i915 = i915_context(pipe);
if (!blend_color)
return;
i915->blend_color = *blend_color;
i915->dirty |= I915_NEW_BLEND;
}
static void
i915_set_stencil_ref(struct pipe_context *pipe,
const struct pipe_stencil_ref stencil_ref)
{
struct i915_context *i915 = i915_context(pipe);
i915->stencil_ref = stencil_ref;
i915->dirty |= I915_NEW_DEPTH_STENCIL;
}
static void *
i915_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler)
{
struct i915_sampler_state *cso = CALLOC_STRUCT(i915_sampler_state);
const unsigned ws = sampler->wrap_s;
const unsigned wt = sampler->wrap_t;
const unsigned wr = sampler->wrap_r;
unsigned minFilt, magFilt;
unsigned mipFilt;
cso->templ = *sampler;
mipFilt = translate_mip_filter(sampler->min_mip_filter);
minFilt = translate_img_filter(sampler->min_img_filter);
magFilt = translate_img_filter(sampler->mag_img_filter);
if (sampler->max_anisotropy > 1)
minFilt = magFilt = FILTER_ANISOTROPIC;
if (sampler->max_anisotropy > 2) {
cso->state[0] |= SS2_MAX_ANISO_4;
}
{
int b = (int)(sampler->lod_bias * 16.0);
b = CLAMP(b, -256, 255);
cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
}
/* Shadow:
*/
if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
cso->state[0] |= (SS2_SHADOW_ENABLE | i915_translate_shadow_compare_func(
sampler->compare_func));
minFilt = FILTER_4X4_FLAT;
magFilt = FILTER_4X4_FLAT;
}
cso->state[0] |=
((minFilt << SS2_MIN_FILTER_SHIFT) | (mipFilt << SS2_MIP_FILTER_SHIFT) |
(magFilt << SS2_MAG_FILTER_SHIFT));
cso->state[1] |= ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
if (!sampler->unnormalized_coords)
cso->state[1] |= SS3_NORMALIZED_COORDS;
{
int minlod = (int)(16.0 * sampler->min_lod);
int maxlod = (int)(16.0 * sampler->max_lod);
minlod = CLAMP(minlod, 0, 16 * 11);
maxlod = CLAMP(maxlod, 0, 16 * 11);
if (minlod > maxlod)
maxlod = minlod;
cso->minlod = minlod;
cso->maxlod = maxlod;
}
{
ubyte r = float_to_ubyte(sampler->border_color.f[0]);
ubyte g = float_to_ubyte(sampler->border_color.f[1]);
ubyte b = float_to_ubyte(sampler->border_color.f[2]);
ubyte a = float_to_ubyte(sampler->border_color.f[3]);
cso->state[2] = I915PACKCOLOR8888(r, g, b, a);
}
return cso;
}
static void
i915_bind_sampler_states(struct pipe_context *pipe,
enum pipe_shader_type shader, unsigned start,
unsigned num, void **samplers)
{
if (shader != PIPE_SHADER_FRAGMENT) {
assert(num == 0);
return;
}
struct i915_context *i915 = i915_context(pipe);
unsigned i;
/* Check for no-op */
if (num == i915->num_samplers &&
!memcmp(i915->fragment_sampler + start, samplers, num * sizeof(void *)))
return;
for (i = 0; i < num; ++i)
i915->fragment_sampler[i + start] = samplers[i];
/* find highest non-null samplers[] entry */
{
unsigned j = MAX2(i915->num_samplers, start + num);
while (j > 0 && i915->fragment_sampler[j - 1] == NULL)
j--;
i915->num_samplers = j;
}
i915->dirty |= I915_NEW_SAMPLER;
}
static void
i915_delete_sampler_state(struct pipe_context *pipe, void *sampler)
{
FREE(sampler);
}
/** XXX move someday? Or consolidate all these simple state setters
* into one file.
*/
static uint32_t
i915_get_modes4_stencil(const struct pipe_stencil_state *stencil)
{
int testmask = stencil->valuemask & 0xff;
int writemask = stencil->writemask & 0xff;
return (_3DSTATE_MODES_4_CMD | ENABLE_STENCIL_TEST_MASK |
STENCIL_TEST_MASK(testmask) | ENABLE_STENCIL_WRITE_MASK |
STENCIL_WRITE_MASK(writemask));
}
static uint32_t
i915_get_lis5_stencil(const struct pipe_stencil_state *stencil)
{
int test = i915_translate_compare_func(stencil->func);
int fop = i915_translate_stencil_op(stencil->fail_op);
int dfop = i915_translate_stencil_op(stencil->zfail_op);
int dpop = i915_translate_stencil_op(stencil->zpass_op);
return (S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE |
(test << S5_STENCIL_TEST_FUNC_SHIFT) |
(fop << S5_STENCIL_FAIL_SHIFT) |
(dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << S5_STENCIL_PASS_Z_PASS_SHIFT));
}
static uint32_t
i915_get_bfo(const struct pipe_stencil_state *stencil)
{
int test = i915_translate_compare_func(stencil->func);
int fop = i915_translate_stencil_op(stencil->fail_op);
int dfop = i915_translate_stencil_op(stencil->zfail_op);
int dpop = i915_translate_stencil_op(stencil->zpass_op);
return (_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_FUNCS |
BFO_ENABLE_STENCIL_TWO_SIDE | BFO_ENABLE_STENCIL_REF |
BFO_STENCIL_TWO_SIDE | (test << BFO_STENCIL_TEST_SHIFT) |
(fop << BFO_STENCIL_FAIL_SHIFT) |
(dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT));
}
static uint32_t
i915_get_bfm(const struct pipe_stencil_state *stencil)
{
return (_3DSTATE_BACKFACE_STENCIL_MASKS | BFM_ENABLE_STENCIL_TEST_MASK |
BFM_ENABLE_STENCIL_WRITE_MASK |
((stencil->valuemask & 0xff) << BFM_STENCIL_TEST_MASK_SHIFT) |
((stencil->writemask & 0xff) << BFM_STENCIL_WRITE_MASK_SHIFT));
}
static void *
i915_create_depth_stencil_state(
struct pipe_context *pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil)
{
struct i915_depth_stencil_state *cso =
CALLOC_STRUCT(i915_depth_stencil_state);
cso->stencil_modes4_cw = i915_get_modes4_stencil(&depth_stencil->stencil[0]);
cso->stencil_modes4_ccw =
i915_get_modes4_stencil(&depth_stencil->stencil[1]);
if (depth_stencil->stencil[0].enabled) {
cso->stencil_LIS5_cw = i915_get_lis5_stencil(&depth_stencil->stencil[0]);
}
if (depth_stencil->stencil[1].enabled) {
cso->bfo_cw[0] = i915_get_bfo(&depth_stencil->stencil[1]);
cso->bfo_cw[1] = i915_get_bfm(&depth_stencil->stencil[1]);
/* Precompute the backface stencil settings if front winding order is
* reversed -- HW doesn't have a bit to flip it for us.
*/
cso->stencil_LIS5_ccw = i915_get_lis5_stencil(&depth_stencil->stencil[1]);
cso->bfo_ccw[0] = i915_get_bfo(&depth_stencil->stencil[0]);
cso->bfo_ccw[1] = i915_get_bfm(&depth_stencil->stencil[0]);
} else {
/* This actually disables two-side stencil: The bit set is a
* modify-enable bit to indicate we are changing the two-side
* setting. Then there is a symbolic zero to show that we are
* setting the flag to zero/off.
*/
cso->bfo_cw[0] = cso->bfo_ccw[0] =
(_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0);
cso->bfo_cw[1] = cso->bfo_ccw[1] = 0;
cso->stencil_LIS5_ccw = cso->stencil_LIS5_cw;
}
if (depth_stencil->depth_enabled) {
int func = i915_translate_compare_func(depth_stencil->depth_func);
cso->depth_LIS6 |=
(S6_DEPTH_TEST_ENABLE | (func << S6_DEPTH_TEST_FUNC_SHIFT));
if (depth_stencil->depth_writemask)
cso->depth_LIS6 |= S6_DEPTH_WRITE_ENABLE;
}
if (depth_stencil->alpha_enabled) {
int test = i915_translate_compare_func(depth_stencil->alpha_func);
ubyte refByte = float_to_ubyte(depth_stencil->alpha_ref_value);
cso->depth_LIS6 |=
(S6_ALPHA_TEST_ENABLE | (test << S6_ALPHA_TEST_FUNC_SHIFT) |
(((unsigned)refByte) << S6_ALPHA_REF_SHIFT));
}
return cso;
}
static void
i915_bind_depth_stencil_state(struct pipe_context *pipe, void *depth_stencil)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->depth_stencil == depth_stencil)
return;
i915->depth_stencil = (const struct i915_depth_stencil_state *)depth_stencil;
i915->dirty |= I915_NEW_DEPTH_STENCIL;
}
static void
i915_delete_depth_stencil_state(struct pipe_context *pipe, void *depth_stencil)
{
FREE(depth_stencil);
}
static void
i915_set_scissor_states(struct pipe_context *pipe, unsigned start_slot,
unsigned num_scissors,
const struct pipe_scissor_state *scissor)
{
struct i915_context *i915 = i915_context(pipe);
memcpy(&i915->scissor, scissor, sizeof(*scissor));
i915->dirty |= I915_NEW_SCISSOR;
}
static void
i915_set_polygon_stipple(struct pipe_context *pipe,
const struct pipe_poly_stipple *stipple)
{
}
static void *
i915_create_fs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
{
struct i915_context *i915 = i915_context(pipe);
struct i915_fragment_shader *ifs = CALLOC_STRUCT(i915_fragment_shader);
if (!ifs)
return NULL;
ifs->draw_data = draw_create_fragment_shader(i915->draw, templ);
if (templ->type == PIPE_SHADER_IR_NIR) {
nir_shader *s = templ->ir.nir;
static const struct nir_to_tgsi_options ntt_options = {
.lower_fabs = true,
};
ifs->state.tokens = nir_to_tgsi_options(s, pipe->screen, &ntt_options);
} else {
assert(templ->type == PIPE_SHADER_IR_TGSI);
/* we need to keep a local copy of the tokens */
ifs->state.tokens = tgsi_dup_tokens(templ->tokens);
}
ifs->state.type = PIPE_SHADER_IR_TGSI;
tgsi_scan_shader(ifs->state.tokens, &ifs->info);
/* The shader's compiled to i915 instructions here */
i915_translate_fragment_program(i915, ifs);
return ifs;
}
static void
i915_bind_fs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->fs == shader)
return;
i915->fs = (struct i915_fragment_shader *)shader;
draw_bind_fragment_shader(i915->draw,
(i915->fs ? i915->fs->draw_data : NULL));
/* Tell draw if we need to do point sprites so we can get PNTC. */
if (i915->fs)
draw_wide_point_sprites(i915->draw, i915->fs->reads_pntc);
i915->dirty |= I915_NEW_FS;
}
static void
i915_delete_fs_state(struct pipe_context *pipe, void *shader)
{
struct i915_fragment_shader *ifs = (struct i915_fragment_shader *)shader;
FREE(ifs->program);
ifs->program = NULL;
FREE((struct tgsi_token *)ifs->state.tokens);
ifs->state.tokens = NULL;
ifs->program_len = 0;
FREE(ifs);
}
static void *
i915_create_vs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
{
struct i915_context *i915 = i915_context(pipe);
struct pipe_shader_state from_nir = { PIPE_SHADER_IR_TGSI };
if (templ->type == PIPE_SHADER_IR_NIR) {
nir_shader *s = templ->ir.nir;
NIR_PASS_V(s, nir_lower_point_size, 1.0, 255.0);
/* The gallivm draw path doesn't support non-native-integers NIR shaders,
* st/mesa does native-integers for the screen as a whole rather than
* per-stage, and i915 FS can't do native integers. So, convert to TGSI,
* where the draw path *does* support non-native-integers.
*/
from_nir.tokens = nir_to_tgsi(s, pipe->screen);
templ = &from_nir;
}
return draw_create_vertex_shader(i915->draw, templ);
}
static void
i915_bind_vs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->vs == shader)
return;
i915->vs = shader;
/* just pass-through to draw module */
draw_bind_vertex_shader(i915->draw, (struct draw_vertex_shader *)shader);
i915->dirty |= I915_NEW_VS;
}
static void
i915_delete_vs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
/* just pass-through to draw module */
draw_delete_vertex_shader(i915->draw, (struct draw_vertex_shader *)shader);
}
static void
i915_set_constant_buffer(struct pipe_context *pipe,
enum pipe_shader_type shader, uint32_t index,
bool take_ownership,
const struct pipe_constant_buffer *cb)
{
struct i915_context *i915 = i915_context(pipe);
struct pipe_resource *buf = cb ? cb->buffer : NULL;
unsigned new_num = 0;
bool diff = true;
/* XXX don't support geom shaders now */
if (shader == PIPE_SHADER_GEOMETRY)
return;
if (cb && cb->user_buffer) {
buf = i915_user_buffer_create(pipe->screen, (void *)cb->user_buffer,
cb->buffer_size, PIPE_BIND_CONSTANT_BUFFER);
}
/* if we have a new buffer compare it with the old one */
if (buf) {
struct i915_buffer *ibuf = i915_buffer(buf);
struct pipe_resource *old_buf = i915->constants[shader];
struct i915_buffer *old = old_buf ? i915_buffer(old_buf) : NULL;
unsigned old_num = i915->current.num_user_constants[shader];
new_num = ibuf->b.width0 / 4 * sizeof(float);
if (old_num == new_num) {
if (old_num == 0)
diff = false;
#if 0
/* XXX no point in running this code since st/mesa only uses user buffers */
/* Can't compare the buffer data since they are userbuffers */
else if (old && old->free_on_destroy)
diff = memcmp(old->data, ibuf->data, ibuf->b.width0);
#else
(void)old;
#endif
}
} else {
diff = i915->current.num_user_constants[shader] != 0;
}
if (take_ownership) {
pipe_resource_reference(&i915->constants[shader], NULL);
i915->constants[shader] = buf;
} else {
pipe_resource_reference(&i915->constants[shader], buf);
}
i915->current.num_user_constants[shader] = new_num;
if (diff)
i915->dirty |= shader == PIPE_SHADER_VERTEX ? I915_NEW_VS_CONSTANTS
: I915_NEW_FS_CONSTANTS;
if (cb && cb->user_buffer) {
pipe_resource_reference(&buf, NULL);
}
}
static void
i915_set_sampler_views(struct pipe_context *pipe, enum pipe_shader_type shader,
unsigned start, unsigned num,
unsigned unbind_num_trailing_slots,
bool take_ownership,
struct pipe_sampler_view **views)
{
if (shader != PIPE_SHADER_FRAGMENT) {
/* No support for VS samplers, because it would mean accessing the
* write-combined maps of the textures, which is very slow. VS samplers
* are not a required feature of GL2.1 or GLES2.
*/
assert(num == 0);
return;
}
struct i915_context *i915 = i915_context(pipe);
uint32_t i;
assert(num <= PIPE_MAX_SAMPLERS);
/* Check for no-op */
if (views && num == i915->num_fragment_sampler_views &&
!memcmp(i915->fragment_sampler_views, views,
num * sizeof(struct pipe_sampler_view *))) {
if (take_ownership) {
for (unsigned i = 0; i < num; i++) {
struct pipe_sampler_view *view = views[i];
pipe_sampler_view_reference(&view, NULL);
}
}
return;
}
for (i = 0; i < num; i++) {
if (take_ownership) {
pipe_sampler_view_reference(&i915->fragment_sampler_views[i], NULL);
i915->fragment_sampler_views[i] = views[i];
} else {
pipe_sampler_view_reference(&i915->fragment_sampler_views[i], views[i]);
}
}
for (i = num; i < i915->num_fragment_sampler_views; i++)
pipe_sampler_view_reference(&i915->fragment_sampler_views[i], NULL);
i915->num_fragment_sampler_views = num;
i915->dirty |= I915_NEW_SAMPLER_VIEW;
}
struct pipe_sampler_view *
i915_create_sampler_view_custom(struct pipe_context *pipe,
struct pipe_resource *texture,
const struct pipe_sampler_view *templ,
unsigned width0, unsigned height0)
{
struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
if (view) {
*view = *templ;
view->reference.count = 1;
view->texture = NULL;
pipe_resource_reference(&view->texture, texture);
view->context = pipe;
}
return view;
}
static struct pipe_sampler_view *
i915_create_sampler_view(struct pipe_context *pipe,
struct pipe_resource *texture,
const struct pipe_sampler_view *templ)
{
struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
if (view) {
*view = *templ;
view->reference.count = 1;
view->texture = NULL;
pipe_resource_reference(&view->texture, texture);
view->context = pipe;
}
return view;
}
static void
i915_sampler_view_destroy(struct pipe_context *pipe,
struct pipe_sampler_view *view)
{
pipe_resource_reference(&view->texture, NULL);
FREE(view);
}
static void
i915_set_framebuffer_state(struct pipe_context *pipe,
const struct pipe_framebuffer_state *fb)
{
struct i915_context *i915 = i915_context(pipe);
i915->framebuffer.width = fb->width;
i915->framebuffer.height = fb->height;
i915->framebuffer.nr_cbufs = fb->nr_cbufs;
if (fb->nr_cbufs) {
pipe_surface_reference(&i915->framebuffer.cbufs[0], fb->cbufs[0]);
struct i915_surface *surf = i915_surface(i915->framebuffer.cbufs[0]);
if (i915->current.fixup_swizzle != surf->oc_swizzle) {
i915->current.fixup_swizzle = surf->oc_swizzle;
memcpy(i915->current.color_swizzle, surf->color_swizzle,
sizeof(surf->color_swizzle));
i915->dirty |= I915_NEW_COLOR_SWIZZLE;
}
} else {
pipe_surface_reference(&i915->framebuffer.cbufs[0], NULL);
}
pipe_surface_reference(&i915->framebuffer.zsbuf, fb->zsbuf);
if (fb->zsbuf)
draw_set_zs_format(i915->draw, fb->zsbuf->format);
i915->dirty |= I915_NEW_FRAMEBUFFER;
}
static void
i915_set_clip_state(struct pipe_context *pipe,
const struct pipe_clip_state *clip)
{
struct i915_context *i915 = i915_context(pipe);
i915->clip = *clip;
draw_set_clip_state(i915->draw, clip);
i915->dirty |= I915_NEW_CLIP;
}
/* Called when gallium frontends notice changes to the viewport
* matrix:
*/
static void
i915_set_viewport_states(struct pipe_context *pipe, unsigned start_slot,
unsigned num_viewports,
const struct pipe_viewport_state *viewport)
{
struct i915_context *i915 = i915_context(pipe);
i915->viewport = *viewport; /* struct copy */
/* pass the viewport info to the draw module */
draw_set_viewport_states(i915->draw, start_slot, num_viewports,
&i915->viewport);
i915->dirty |= I915_NEW_VIEWPORT;
}
static void *
i915_create_rasterizer_state(struct pipe_context *pipe,
const struct pipe_rasterizer_state *rasterizer)
{
struct i915_rasterizer_state *cso = CALLOC_STRUCT(i915_rasterizer_state);
cso->templ = *rasterizer;
cso->light_twoside = rasterizer->light_twoside;
cso->ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE;
cso->ds[1].f = rasterizer->offset_scale;
if (rasterizer->poly_stipple_enable) {
cso->st |= ST1_ENABLE;
}
if (rasterizer->scissor)
cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT;
else
cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT;
switch (rasterizer->cull_face) {
case PIPE_FACE_NONE:
cso->LIS4 |= S4_CULLMODE_NONE;
break;
case PIPE_FACE_FRONT:
if (rasterizer->front_ccw)
cso->LIS4 |= S4_CULLMODE_CCW;
else
cso->LIS4 |= S4_CULLMODE_CW;
break;
case PIPE_FACE_BACK:
if (rasterizer->front_ccw)
cso->LIS4 |= S4_CULLMODE_CW;
else
cso->LIS4 |= S4_CULLMODE_CCW;
break;
case PIPE_FACE_FRONT_AND_BACK:
cso->LIS4 |= S4_CULLMODE_BOTH;
break;
}
{
int line_width = CLAMP((int)(rasterizer->line_width * 2), 1, 0xf);
cso->LIS4 |= line_width << S4_LINE_WIDTH_SHIFT;
if (rasterizer->line_smooth)
cso->LIS4 |= S4_LINE_ANTIALIAS_ENABLE;
}
{
int point_size = CLAMP((int)rasterizer->point_size, 1, 0xff);
cso->LIS4 |= point_size << S4_POINT_WIDTH_SHIFT;
}
if (rasterizer->flatshade) {
cso->LIS4 |=
(S4_FLATSHADE_ALPHA | S4_FLATSHADE_COLOR | S4_FLATSHADE_SPECULAR);
}
if (!rasterizer->flatshade_first)
cso->LIS6 |= (2 << S6_TRISTRIP_PV_SHIFT);
cso->LIS7 = fui(rasterizer->offset_units);
return cso;
}
static void
i915_bind_rasterizer_state(struct pipe_context *pipe, void *raster)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->rasterizer == raster)
return;
i915->rasterizer = (struct i915_rasterizer_state *)raster;
/* pass-through to draw module */
draw_set_rasterizer_state(
i915->draw, (i915->rasterizer ? &(i915->rasterizer->templ) : NULL),
raster);
i915->dirty |= I915_NEW_RASTERIZER;
}
static void
i915_delete_rasterizer_state(struct pipe_context *pipe, void *raster)
{
FREE(raster);
}
static void
i915_set_vertex_buffers(struct pipe_context *pipe, unsigned start_slot,
unsigned count, unsigned unbind_num_trailing_slots,
bool take_ownership,
const struct pipe_vertex_buffer *buffers)
{
struct i915_context *i915 = i915_context(pipe);
struct draw_context *draw = i915->draw;
util_set_vertex_buffers_count(i915->vertex_buffers, &i915->nr_vertex_buffers,
buffers, start_slot, count,
unbind_num_trailing_slots, take_ownership);
/* pass-through to draw module */
draw_set_vertex_buffers(draw, start_slot, count, unbind_num_trailing_slots,
buffers);
}
static void *
i915_create_vertex_elements_state(struct pipe_context *pipe, unsigned count,
const struct pipe_vertex_element *attribs)
{
struct i915_velems_state *velems;
assert(count <= PIPE_MAX_ATTRIBS);
velems =
(struct i915_velems_state *)MALLOC(sizeof(struct i915_velems_state));
if (velems) {
velems->count = count;
memcpy(velems->velem, attribs, sizeof(*attribs) * count);
}
return velems;
}
static void
i915_bind_vertex_elements_state(struct pipe_context *pipe, void *velems)
{
struct i915_context *i915 = i915_context(pipe);
struct i915_velems_state *i915_velems = (struct i915_velems_state *)velems;
if (i915->velems == velems)
return;
i915->velems = velems;
/* pass-through to draw module */
if (i915_velems) {
draw_set_vertex_elements(i915->draw, i915_velems->count,
i915_velems->velem);
}
}
static void
i915_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
{
FREE(velems);
}
static void
i915_set_sample_mask(struct pipe_context *pipe, unsigned sample_mask)
{
}
void
i915_init_state_functions(struct i915_context *i915)
{
i915->base.create_blend_state = i915_create_blend_state;
i915->base.bind_blend_state = i915_bind_blend_state;
i915->base.delete_blend_state = i915_delete_blend_state;
i915->base.create_sampler_state = i915_create_sampler_state;
i915->base.bind_sampler_states = i915_bind_sampler_states;
i915->base.delete_sampler_state = i915_delete_sampler_state;
i915->base.create_depth_stencil_alpha_state =
i915_create_depth_stencil_state;
i915->base.bind_depth_stencil_alpha_state = i915_bind_depth_stencil_state;
i915->base.delete_depth_stencil_alpha_state =
i915_delete_depth_stencil_state;
i915->base.create_rasterizer_state = i915_create_rasterizer_state;
i915->base.bind_rasterizer_state = i915_bind_rasterizer_state;
i915->base.delete_rasterizer_state = i915_delete_rasterizer_state;
i915->base.create_fs_state = i915_create_fs_state;
i915->base.bind_fs_state = i915_bind_fs_state;
i915->base.delete_fs_state = i915_delete_fs_state;
i915->base.create_vs_state = i915_create_vs_state;
i915->base.bind_vs_state = i915_bind_vs_state;
i915->base.delete_vs_state = i915_delete_vs_state;
i915->base.create_vertex_elements_state = i915_create_vertex_elements_state;
i915->base.bind_vertex_elements_state = i915_bind_vertex_elements_state;
i915->base.delete_vertex_elements_state = i915_delete_vertex_elements_state;
i915->base.set_blend_color = i915_set_blend_color;
i915->base.set_stencil_ref = i915_set_stencil_ref;
i915->base.set_clip_state = i915_set_clip_state;
i915->base.set_sample_mask = i915_set_sample_mask;
i915->base.set_constant_buffer = i915_set_constant_buffer;
i915->base.set_framebuffer_state = i915_set_framebuffer_state;
i915->base.set_polygon_stipple = i915_set_polygon_stipple;
i915->base.set_scissor_states = i915_set_scissor_states;
i915->base.set_sampler_views = i915_set_sampler_views;
i915->base.create_sampler_view = i915_create_sampler_view;
i915->base.sampler_view_destroy = i915_sampler_view_destroy;
i915->base.set_viewport_states = i915_set_viewport_states;
i915->base.set_vertex_buffers = i915_set_vertex_buffers;
}