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mesa: flatten STATE_MATERIAL and STATE_LIGHTPROD tokens

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Flattening continue to get optimal code in fetch_state.

This merges the "face" field with the "attrib" field using the combined
MAT_ATTRIB_* enums. The outcome is that the inner switch statements can
be flatten because we can use MAT_ATTRIB_* to index into the attrib array
directly.

With LightSource attributes that don't have two sides, more math is
involved to get the correct index but it works out nicely too.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8183>
This commit is contained in:
Marek Olšák
2020-12-04 20:22:15 -05:00
committed by Marge Bot
parent 3d9b5d8087
commit 0eccba1ac0
4 changed files with 80 additions and 106 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
src/compiler/glsl/builtin_variables.cpp
View File

@@ -74,19 +74,19 @@ static const struct gl_builtin_uniform_element gl_Point_elements[] = {
}; };
static const struct gl_builtin_uniform_element gl_FrontMaterial_elements[] = { static const struct gl_builtin_uniform_element gl_FrontMaterial_elements[] = {
{"emission", {STATE_MATERIAL, 0, STATE_EMISSION}, SWIZZLE_XYZW}, {"emission", {STATE_MATERIAL, MAT_ATTRIB_FRONT_EMISSION}, SWIZZLE_XYZW},
{"ambient", {STATE_MATERIAL, 0, STATE_AMBIENT}, SWIZZLE_XYZW}, {"ambient", {STATE_MATERIAL, MAT_ATTRIB_FRONT_AMBIENT}, SWIZZLE_XYZW},
{"diffuse", {STATE_MATERIAL, 0, STATE_DIFFUSE}, SWIZZLE_XYZW}, {"diffuse", {STATE_MATERIAL, MAT_ATTRIB_FRONT_DIFFUSE}, SWIZZLE_XYZW},
{"specular", {STATE_MATERIAL, 0, STATE_SPECULAR}, SWIZZLE_XYZW}, {"specular", {STATE_MATERIAL, MAT_ATTRIB_FRONT_SPECULAR}, SWIZZLE_XYZW},
{"shininess", {STATE_MATERIAL, 0, STATE_SHININESS}, SWIZZLE_XXXX}, {"shininess", {STATE_MATERIAL, MAT_ATTRIB_FRONT_SHININESS}, SWIZZLE_XXXX},
}; };
static const struct gl_builtin_uniform_element gl_BackMaterial_elements[] = { static const struct gl_builtin_uniform_element gl_BackMaterial_elements[] = {
{"emission", {STATE_MATERIAL, 1, STATE_EMISSION}, SWIZZLE_XYZW}, {"emission", {STATE_MATERIAL, MAT_ATTRIB_BACK_EMISSION}, SWIZZLE_XYZW},
{"ambient", {STATE_MATERIAL, 1, STATE_AMBIENT}, SWIZZLE_XYZW}, {"ambient", {STATE_MATERIAL, MAT_ATTRIB_BACK_AMBIENT}, SWIZZLE_XYZW},
{"diffuse", {STATE_MATERIAL, 1, STATE_DIFFUSE}, SWIZZLE_XYZW}, {"diffuse", {STATE_MATERIAL, MAT_ATTRIB_BACK_DIFFUSE}, SWIZZLE_XYZW},
{"specular", {STATE_MATERIAL, 1, STATE_SPECULAR}, SWIZZLE_XYZW}, {"specular", {STATE_MATERIAL, MAT_ATTRIB_BACK_SPECULAR}, SWIZZLE_XYZW},
{"shininess", {STATE_MATERIAL, 1, STATE_SHININESS}, SWIZZLE_XXXX}, {"shininess", {STATE_MATERIAL, MAT_ATTRIB_BACK_SHININESS}, SWIZZLE_XXXX},
}; };
static const struct gl_builtin_uniform_element gl_LightSource_elements[] = { static const struct gl_builtin_uniform_element gl_LightSource_elements[] = {
@@ -121,15 +121,15 @@ static const struct gl_builtin_uniform_element gl_BackLightModelProduct_elements
}; };
static const struct gl_builtin_uniform_element gl_FrontLightProduct_elements[] = { static const struct gl_builtin_uniform_element gl_FrontLightProduct_elements[] = {
{"ambient", {STATE_LIGHTPROD, 0, 0, STATE_AMBIENT}, SWIZZLE_XYZW}, {"ambient", {STATE_LIGHTPROD, 0, MAT_ATTRIB_FRONT_AMBIENT}, SWIZZLE_XYZW},
{"diffuse", {STATE_LIGHTPROD, 0, 0, STATE_DIFFUSE}, SWIZZLE_XYZW}, {"diffuse", {STATE_LIGHTPROD, 0, MAT_ATTRIB_FRONT_DIFFUSE}, SWIZZLE_XYZW},
{"specular", {STATE_LIGHTPROD, 0, 0, STATE_SPECULAR}, SWIZZLE_XYZW}, {"specular", {STATE_LIGHTPROD, 0, MAT_ATTRIB_FRONT_SPECULAR}, SWIZZLE_XYZW},
}; };
static const struct gl_builtin_uniform_element gl_BackLightProduct_elements[] = { static const struct gl_builtin_uniform_element gl_BackLightProduct_elements[] = {
{"ambient", {STATE_LIGHTPROD, 0, 1, STATE_AMBIENT}, SWIZZLE_XYZW}, {"ambient", {STATE_LIGHTPROD, 0, MAT_ATTRIB_BACK_AMBIENT}, SWIZZLE_XYZW},
{"diffuse", {STATE_LIGHTPROD, 0, 1, STATE_DIFFUSE}, SWIZZLE_XYZW}, {"diffuse", {STATE_LIGHTPROD, 0, MAT_ATTRIB_BACK_DIFFUSE}, SWIZZLE_XYZW},
{"specular", {STATE_LIGHTPROD, 0, 1, STATE_SPECULAR}, SWIZZLE_XYZW}, {"specular", {STATE_LIGHTPROD, 0, MAT_ATTRIB_BACK_SPECULAR}, SWIZZLE_XYZW},
}; };
static const struct gl_builtin_uniform_element gl_TextureEnvColor_elements[] = { static const struct gl_builtin_uniform_element gl_TextureEnvColor_elements[] = {

4
src/mesa/main/ffvertex_prog.c
View File

@@ -881,7 +881,7 @@ static struct ureg get_material( struct tnl_program *p, GLuint side,
return register_input( p, VERT_ATTRIB_MAT(attrib) ); return register_input( p, VERT_ATTRIB_MAT(attrib) );
} }
else else
return register_param3( p, STATE_MATERIAL, side, property ); return register_param2(p, STATE_MATERIAL, attrib);
} }
#define SCENE_COLOR_BITS(side) (( MAT_BIT_FRONT_EMISSION | \ #define SCENE_COLOR_BITS(side) (( MAT_BIT_FRONT_EMISSION | \
@@ -930,7 +930,7 @@ static struct ureg get_lightprod( struct tnl_program *p, GLuint light,
return tmp; return tmp;
} }
else else
return register_param4(p, STATE_LIGHTPROD, light, side, property); return register_param3(p, STATE_LIGHTPROD, light, attrib);
} }

103
src/mesa/program/prog_statevars.c
View File

@@ -30,6 +30,7 @@
#include <stdio.h> #include <stdio.h>
#include <stddef.h>
#include "main/glheader.h" #include "main/glheader.h"
#include "main/context.h" #include "main/context.h"
#include "main/blend.h" #include "main/blend.h"
@@ -87,39 +88,20 @@ fetch_state(struct gl_context *ctx, const gl_state_index16 state[],
switch (state[0]) { switch (state[0]) {
case STATE_MATERIAL: case STATE_MATERIAL:
{ {
/* state[1] is either 0=front or 1=back side */ /* state[1] is MAT_ATTRIB_FRONT_* */
const GLuint face = (GLuint) state[1]; const GLuint index = (GLuint) state[1];
const struct gl_material *mat = &ctx->Light.Material; const struct gl_material *mat = &ctx->Light.Material;
assert(face == 0 || face == 1); assert(index >= MAT_ATTRIB_FRONT_AMBIENT &&
/* we rely on tokens numbered so that _BACK_ == _FRONT_+ 1 */ index <= MAT_ATTRIB_BACK_SHININESS);
assert(MAT_ATTRIB_FRONT_AMBIENT + 1 == MAT_ATTRIB_BACK_AMBIENT); if (index >= MAT_ATTRIB_FRONT_SHININESS) {
/* XXX we could get rid of this switch entirely with a little value[0] = mat->Attrib[index][0];
* work in arbprogparse.c's parse_state_single_item().
*/
/* state[2] is the material attribute */
switch (state[2]) {
case STATE_AMBIENT:
COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_AMBIENT + face]);
return;
case STATE_DIFFUSE:
COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_DIFFUSE + face]);
return;
case STATE_SPECULAR:
COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_SPECULAR + face]);
return;
case STATE_EMISSION:
COPY_4V(value, mat->Attrib[MAT_ATTRIB_FRONT_EMISSION + face]);
return;
case STATE_SHININESS:
value[0] = mat->Attrib[MAT_ATTRIB_FRONT_SHININESS + face][0];
value[1] = 0.0F; value[1] = 0.0F;
value[2] = 0.0F; value[2] = 0.0F;
value[3] = 1.0F; value[3] = 1.0F;
return; } else {
default: COPY_4V(value, mat->Attrib[index]);
unreachable("Invalid material state in fetch_state");
return;
} }
return;
} }
case STATE_LIGHT: case STATE_LIGHT:
{ {
@@ -175,38 +157,26 @@ fetch_state(struct gl_context *ctx, const gl_state_index16 state[],
case STATE_LIGHTPROD: case STATE_LIGHTPROD:
{ {
const GLuint ln = (GLuint) state[1]; const GLuint ln = (GLuint) state[1];
const GLuint face = (GLuint) state[2]; const GLuint index = (GLuint) state[2];
GLint i; const GLuint attr = (index / 2) * 4;
assert(face == 0 || face == 1); assert(index >= MAT_ATTRIB_FRONT_AMBIENT &&
switch (state[3]) { index <= MAT_ATTRIB_BACK_SPECULAR);
case STATE_AMBIENT: for (int i = 0; i < 3; i++) {
for (i = 0; i < 3; i++) { /* We want attr to access out of bounds into the following Diffuse
value[i] = ctx->Light.LightSource[ln].Ambient[i] * * and Specular fields. This is guaranteed to work because
ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i]; * STATE_LIGHT and STATE_LIGHT_ATTRIBS also rely on this memory
* layout.
*/
STATIC_ASSERT(offsetof(struct gl_light_uniforms, Ambient) + 16 ==
offsetof(struct gl_light_uniforms, Diffuse));
STATIC_ASSERT(offsetof(struct gl_light_uniforms, Diffuse) + 16 ==
offsetof(struct gl_light_uniforms, Specular));
value[i] = ctx->Light.LightSource[ln].Ambient[attr + i] *
ctx->Light.Material.Attrib[index][i];
} }
/* [3] = material alpha */ /* [3] = material alpha */
value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][3]; value[3] = ctx->Light.Material.Attrib[index][3];
return; return;
case STATE_DIFFUSE:
for (i = 0; i < 3; i++) {
value[i] = ctx->Light.LightSource[ln].Diffuse[i] *
ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][i];
}
/* [3] = material alpha */
value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
return;
case STATE_SPECULAR:
for (i = 0; i < 3; i++) {
value[i] = ctx->Light.LightSource[ln].Specular[i] *
ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
}
/* [3] = material alpha */
value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][3];
return;
default:
unreachable("Invalid lightprod state in fetch_state");
return;
}
} }
case STATE_TEXGEN: case STATE_TEXGEN:
{ {
@@ -835,7 +805,7 @@ append_token(char *dst, gl_state_index k)
{ {
switch (k) { switch (k) {
case STATE_MATERIAL: case STATE_MATERIAL:
append(dst, "material."); append(dst, "material");
break; break;
case STATE_LIGHT: case STATE_LIGHT:
append(dst, "light"); append(dst, "light");
@@ -1061,15 +1031,6 @@ append_token(char *dst, gl_state_index k)
} }
} }
static void
append_face(char *dst, GLint face)
{
if (face == 0)
append(dst, "front.");
else
append(dst, "back.");
}
static void static void
append_index(char *dst, GLint index, bool structure) append_index(char *dst, GLint index, bool structure)
{ {
@@ -1094,8 +1055,7 @@ _mesa_program_state_string(const gl_state_index16 state[STATE_LENGTH])
switch (state[0]) { switch (state[0]) {
case STATE_MATERIAL: case STATE_MATERIAL:
append_face(str, state[1]); append_index(str, state[1], false);
append_token(str, state[2]);
break; break;
case STATE_LIGHT: case STATE_LIGHT:
append_index(str, state[1], true); /* light number [i]. */ append_index(str, state[1], true); /* light number [i]. */
@@ -1116,9 +1076,8 @@ _mesa_program_state_string(const gl_state_index16 state[STATE_LENGTH])
} }
break; break;
case STATE_LIGHTPROD: case STATE_LIGHTPROD:
append_index(str, state[1], true); /* light number [i]. */ append_index(str, state[1], false); /* light number [i] */
append_face(str, state[2]); append_index(str, state[2], false);
append_token(str, state[3]);
break; break;
case STATE_TEXGEN: case STATE_TEXGEN:
append_index(str, state[1], true); /* tex unit [i] */ append_index(str, state[1], true); /* tex unit [i] */

37
src/mesa/program/program_parse.y
View File

@@ -260,7 +260,8 @@ static struct asm_instruction *asm_instruction_copy_ctor(
%type <integer> stateOptModMatNum stateModMatNum statePaletteMatNum %type <integer> stateOptModMatNum stateModMatNum statePaletteMatNum
%type <integer> stateProgramMatNum %type <integer> stateProgramMatNum
%type <integer> ambDiffSpecProperty %type <integer> ambDiffSpecPropertyMaterial
%type <integer> ambDiffSpecPropertyLight
%type <state> programSingleItem progEnvParam progLocalParam %type <state> programSingleItem progEnvParam progLocalParam
%type <state> programMultipleItem progEnvParams progLocalParams %type <state> programMultipleItem progEnvParams progLocalParams
@@ -1240,22 +1241,22 @@ stateMaterialItem: MATERIAL optFaceType stateMatProperty
{ {
memset($$, 0, sizeof($$)); memset($$, 0, sizeof($$));
$$[0] = STATE_MATERIAL; $$[0] = STATE_MATERIAL;
$$[1] = $2; $$[1] = $3 + $2;
$$[2] = $3; $$[2] = 0;
} }
; ;
stateMatProperty: ambDiffSpecProperty stateMatProperty: ambDiffSpecPropertyMaterial
{ {
$$ = $1; $$ = $1;
} }
| EMISSION | EMISSION
{ {
$$ = STATE_EMISSION; $$ = MAT_ATTRIB_FRONT_EMISSION;
} }
| SHININESS | SHININESS
{ {
$$ = STATE_SHININESS; $$ = MAT_ATTRIB_FRONT_SHININESS;
} }
; ;
@@ -1268,7 +1269,7 @@ stateLightItem: LIGHT '[' stateLightNumber ']' stateLightProperty
} }
; ;
stateLightProperty: ambDiffSpecProperty stateLightProperty: ambDiffSpecPropertyLight
{ {
$$ = $1; $$ = $1;
} }
@@ -1326,12 +1327,12 @@ stateLightProdItem: LIGHTPROD '[' stateLightNumber ']' optFaceType stateLProdPro
memset($$, 0, sizeof($$)); memset($$, 0, sizeof($$));
$$[0] = STATE_LIGHTPROD; $$[0] = STATE_LIGHTPROD;
$$[1] = $3; $$[1] = $3;
$$[2] = $5; $$[2] = $6 + $5;
$$[3] = $6; $$[3] = 0;
} }
; ;
stateLProdProperty: ambDiffSpecProperty; stateLProdProperty: ambDiffSpecPropertyMaterial;
stateTexEnvItem: TEXENV optLegacyTexUnitNum stateTexEnvProperty stateTexEnvItem: TEXENV optLegacyTexUnitNum stateTexEnvProperty
{ {
@@ -1347,7 +1348,21 @@ stateTexEnvProperty: COLOR
} }
; ;
ambDiffSpecProperty: AMBIENT ambDiffSpecPropertyMaterial: AMBIENT
{
$$ = MAT_ATTRIB_FRONT_AMBIENT;
}
| DIFFUSE
{
$$ = MAT_ATTRIB_FRONT_DIFFUSE;
}
| SPECULAR
{
$$ = MAT_ATTRIB_FRONT_SPECULAR;
}
;
ambDiffSpecPropertyLight: AMBIENT
{ {
$$ = STATE_AMBIENT; $$ = STATE_AMBIENT;
} }