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i965: Use float calculations when double is unnecessary.

Browse source 
Literals without an f/F suffix are of type double, and implicit
conversion rules specify that the float in (float op double) be
converted to a double before the operation is performed. I believe float
execution was intended (in nearly all cases) or is sufficient (in the
case of gen7_urb.c).

Removes a lot of float <-> double conversion instructions and replaces
many double instructions with float instructions which are cheaper.

   text     data      bss      dec      hex  filename
4928659   195160    26192  5150011   4e953b  i965_dri.so before
4928315   195152    26192  5149659   4e93db  i965_dri.so after

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Matt Turner 2015-07-12 00:13:45 -07:00
parent c67ce2bd3b
commit c1da15709a
14 changed files with 35 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
View file

@ -1285,8 +1285,8 @@ brw_blorp_blit_program::translate_dst_to_src()
/* Round the float coordinates down to nearest integer */
emit_rndd(Xp_f, X_f);
emit_rndd(Yp_f, Y_f);
emit_mul(X_f, Xp_f, brw_imm_f(1 / key->x_scale));
emit_mul(Y_f, Yp_f, brw_imm_f(1 / key->y_scale));
emit_mul(X_f, Xp_f, brw_imm_f(1.0f / key->x_scale));
emit_mul(Y_f, Yp_f, brw_imm_f(1.0f / key->y_scale));
SWAP_XY_AND_XPYP();
} else if (!key->bilinear_filter) {
/* Round the float coordinates down to nearest integer by moving to
@ -1442,7 +1442,7 @@ brw_blorp_blit_program::manual_blend_average(unsigned num_samples)
for (int j = 0; j < 4; ++j) {
emit_mul(offset(texture_data[0], 2*j),
offset(vec8(texture_data[0]), 2*j),
brw_imm_f(1.0/num_samples));
brw_imm_f(1.0f / num_samples));
}
}
@ -1475,9 +1475,9 @@ brw_blorp_blit_program::manual_blend_bilinear(unsigned num_samples)
/* Compute pixel coordinates */
emit_add(vec16(x_sample_coords), Xp_f,
brw_imm_f((float)(i & 0x1) * (1.0 / key->x_scale)));
brw_imm_f((float)(i & 0x1) * (1.0f / key->x_scale)));
emit_add(vec16(y_sample_coords), Yp_f,
brw_imm_f((float)((i >> 1) & 0x1) * (1.0 / key->y_scale)));
brw_imm_f((float)((i >> 1) & 0x1) * (1.0f / key->y_scale)));
emit_mov(vec16(X), x_sample_coords);
emit_mov(vec16(Y), y_sample_coords);
@ -1789,7 +1789,7 @@ brw_blorp_coord_transform_params::setup(GLfloat src0, GLfloat src1,
* so 0.5 provides the necessary correction.
*/
multiplier = scale;
offset = src0 + (-dst0 + 0.5) * scale;
offset = src0 + (-dst0 + 0.5f) * scale;
} else {
/* When mirroring X we need:
* src_x - src_x0 = dst_x1 - dst_x - 0.5
@ -1797,7 +1797,7 @@ brw_blorp_coord_transform_params::setup(GLfloat src0, GLfloat src1,
* src_x = src_x0 + (dst_x1 -dst_x - 0.5) * scale
*/
multiplier = -scale;
offset = src0 + (dst1 - 0.5) * scale;
offset = src0 + (dst1 - 0.5f) * scale;
}
}
@ -1952,8 +1952,8 @@ brw_blorp_blit_params::brw_blorp_blit_params(struct brw_context *brw,
/* Scaling factors used for bilinear filtering in multisample scaled
* blits.
*/
wm_prog_key.x_scale = 2.0;
wm_prog_key.y_scale = src_mt->num_samples / 2.0;
wm_prog_key.x_scale = 2.0f;
wm_prog_key.y_scale = src_mt->num_samples / 2.0f;
if (filter == GL_LINEAR && src.num_samples <= 1 && dst.num_samples <= 1)
wm_prog_key.bilinear_filter = true;
@ -2000,9 +2000,9 @@ brw_blorp_blit_params::brw_blorp_blit_params(struct brw_context *brw,
x1 = wm_push_consts.dst_x1 = roundf(dst_x1);
y1 = wm_push_consts.dst_y1 = roundf(dst_y1);
wm_push_consts.rect_grid_x1 = (minify(src_mt->logical_width0, src_level) *
wm_prog_key.x_scale - 1.0);
wm_prog_key.x_scale - 1.0f);
wm_push_consts.rect_grid_y1 = (minify(src_mt->logical_height0, src_level) *
wm_prog_key.y_scale - 1.0);
wm_prog_key.y_scale - 1.0f);
wm_push_consts.x_transform.setup(src_x0, src_x1, dst_x0, dst_x1, mirror_x);
wm_push_consts.y_transform.setup(src_y0, src_y1, dst_y0, dst_y1, mirror_y);

4
src/mesa/drivers/dri/i965/brw_fs.cpp
View file

@ -975,11 +975,11 @@ fs_visitor::emit_fragcoord_interpolation(bool pixel_center_integer,
bld.MOV(wpos, this->pixel_y);
} else {
fs_reg pixel_y = this->pixel_y;
float offset = (pixel_center_integer ? 0.0 : 0.5);
float offset = (pixel_center_integer ? 0.0f : 0.5f);
if (flip) {
pixel_y.negate = true;
offset += key->drawable_height - 1.0;
offset += key->drawable_height - 1.0f;
}
bld.ADD(wpos, pixel_y, fs_reg(offset));

4
src/mesa/drivers/dri/i965/brw_meta_fast_clear.c
View file

@ -348,7 +348,7 @@ is_color_fast_clear_compatible(struct brw_context *brw,
}
for (int i = 0; i < 4; i++) {
if (color->f[i] != 0.0 && color->f[i] != 1.0 &&
if (color->f[i] != 0.0f && color->f[i] != 1.0f &&
_mesa_format_has_color_component(format, i)) {
return false;
}
@ -366,7 +366,7 @@ compute_fast_clear_color_bits(const union gl_color_union *color)
uint32_t bits = 0;
for (int i = 0; i < 4; i++) {
/* Testing for non-0 works for integer and float colors */
if (color->f[i] != 0.0)
if (color->f[i] != 0.0f)
bits |= 1 << (GEN7_SURFACE_CLEAR_COLOR_SHIFT + (3 - i));
}
return bits;

4
src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c
View file

@ -239,10 +239,10 @@ setup_coord_coeff(GLuint prog, GLuint multiplier, GLuint offset,
if (mirror) {
_mesa_Uniform1f(multiplier, -scale);
_mesa_Uniform1f(offset, src_0 + (dst_1 - 0.5) * scale);
_mesa_Uniform1f(offset, src_0 + (dst_1 - 0.5f) * scale);
} else {
_mesa_Uniform1f(multiplier, scale);
_mesa_Uniform1f(offset, src_0 + (-dst_0 + 0.5) * scale);
_mesa_Uniform1f(offset, src_0 + (-dst_0 + 0.5f) * scale);
}
}

4
src/mesa/drivers/dri/i965/brw_misc_state.c
View file

@ -834,13 +834,13 @@ static void upload_line_stipple(struct brw_context *brw)
if (brw->gen >= 7) {
/* in U1.16 */
tmp = 1.0 / (GLfloat) ctx->Line.StippleFactor;
tmp = 1.0f / ctx->Line.StippleFactor;
tmpi = tmp * (1<<16);
OUT_BATCH(tmpi << 15 | ctx->Line.StippleFactor);
}
else {
/* in U1.13 */
tmp = 1.0 / (GLfloat) ctx->Line.StippleFactor;
tmp = 1.0f / ctx->Line.StippleFactor;
tmpi = tmp * (1<<13);
OUT_BATCH(tmpi << 16 | ctx->Line.StippleFactor);
}

4
src/mesa/drivers/dri/i965/brw_sampler_state.c
View file

@ -425,11 +425,11 @@ brw_update_sampler_state(struct brw_context *brw,
/* Enable anisotropic filtering if desired. */
unsigned max_anisotropy = BRW_ANISORATIO_2;
if (sampler->MaxAnisotropy > 1.0) {
if (sampler->MaxAnisotropy > 1.0f) {
min_filter = BRW_MAPFILTER_ANISOTROPIC;
mag_filter = BRW_MAPFILTER_ANISOTROPIC;
if (sampler->MaxAnisotropy > 2.0) {
if (sampler->MaxAnisotropy > 2.0f) {
max_anisotropy =
MIN2((sampler->MaxAnisotropy - 2) / 2, BRW_ANISORATIO_16);
}

9
src/mesa/drivers/dri/i965/brw_sf_state.c
View file

@ -220,7 +220,7 @@ static void upload_sf_unit( struct brw_context *brw )
/* _NEW_LINE */
sf->sf6.line_width =
CLAMP(ctx->Line.Width, 1.0, ctx->Const.MaxLineWidth) * (1<<1);
CLAMP(ctx->Line.Width, 1.0f, ctx->Const.MaxLineWidth) * (1<<1);
sf->sf6.line_endcap_aa_region_width = 1;
if (ctx->Line.SmoothFlag)
@ -259,9 +259,10 @@ static void upload_sf_unit( struct brw_context *brw )
/* _NEW_POINT */
sf->sf7.sprite_point = ctx->Point.PointSprite;
sf->sf7.point_size = CLAMP(rint(CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize)), 1, 255) * (1<<3);
sf->sf7.point_size = CLAMP(rintf(CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize)), 1.0f, 255.0f) *
(1<<3);
/* _NEW_PROGRAM | _NEW_POINT */
sf->sf7.use_point_size_state = !(ctx->VertexProgram.PointSizeEnabled ||
ctx->Point._Attenuated);

2
src/mesa/drivers/dri/i965/brw_state_cache.c
View file

@ -323,7 +323,7 @@ brw_upload_cache(struct brw_cache *cache,
item->key = tmp;
if (cache->n_items > cache->size * 1.5)
if (cache->n_items > cache->size * 1.5f)
rehash(cache);
hash %= cache->size;

4
src/mesa/drivers/dri/i965/brw_util.h
View file

@ -53,14 +53,14 @@ brw_get_line_width(struct brw_context *brw)
float line_width =
CLAMP(!brw->ctx.Multisample._Enabled && !brw->ctx.Line.SmoothFlag
? roundf(brw->ctx.Line.Width) : brw->ctx.Line.Width,
0.0, brw->ctx.Const.MaxLineWidth);
0.0f, brw->ctx.Const.MaxLineWidth);
uint32_t line_width_u3_7 = U_FIXED(line_width, 7);
/* Line width of 0 is not allowed when MSAA enabled */
if (brw->ctx.Multisample._Enabled) {
if (line_width_u3_7 == 0)
line_width_u3_7 = 1;
} else if (brw->ctx.Line.SmoothFlag && line_width < 1.5) {
} else if (brw->ctx.Line.SmoothFlag && line_width < 1.5f) {
/* For 1 pixel line thickness or less, the general
* anti-aliasing algorithm gives up, and a garbage line is
* generated. Setting a Line Width of 0.0 specifies the

4
src/mesa/drivers/dri/i965/gen6_multisample_state.c
View file

@ -148,7 +148,7 @@ unsigned
gen6_determine_sample_mask(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
float coverage = 1.0;
float coverage = 1.0f;
float coverage_invert = false;
unsigned sample_mask = ~0u;
@ -166,7 +166,7 @@ gen6_determine_sample_mask(struct brw_context *brw)
}
if (num_samples > 1) {
int coverage_int = (int) (num_samples * coverage + 0.5);
int coverage_int = (int) (num_samples * coverage + 0.5f);
uint32_t coverage_bits = (1 << coverage_int) - 1;
if (coverage_invert)
coverage_bits ^= (1 << num_samples) - 1;

2
src/mesa/drivers/dri/i965/gen6_sf_state.c
View file

@ -383,7 +383,7 @@ upload_sf_state(struct brw_context *brw)
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw4 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
dw4 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/*
* Window coordinates in an FBO are inverted, which means point

2
src/mesa/drivers/dri/i965/gen7_sf_state.c
View file

@ -220,7 +220,7 @@ upload_sf_state(struct brw_context *brw)
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw3 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
dw3 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {

2
src/mesa/drivers/dri/i965/gen7_urb.c
View file

@ -228,7 +228,7 @@ gen7_upload_urb(struct brw_context *brw)
remaining_space = total_wants;
if (remaining_space > 0) {
unsigned vs_additional = (unsigned)
round(vs_wants * (((double) remaining_space) / total_wants));
roundf(vs_wants * (((float) remaining_space) / total_wants));
vs_chunks += vs_additional;
remaining_space -= vs_additional;
gs_chunks += remaining_space;

2
src/mesa/drivers/dri/i965/gen8_sf_state.c
View file

@ -169,7 +169,7 @@ upload_sf(struct brw_context *brw)
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw3 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
dw3 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/* _NEW_PROGRAM | _NEW_POINT */
if (!(ctx->VertexProgram.PointSizeEnabled || ctx->Point._Attenuated))