/*
* Mesa 3-D graphics library
- * Version: 6.5
+ * Version: 7.3
*
* Copyright (C) 2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 2008 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"),
uniform mat4 gl_TextureMatrix[gl_MaxTextureCoords];
uniform mat3 gl_NormalMatrix;
-uniform mat3 __NormalMatrixTranspose; // Mesa only
uniform mat4 gl_ModelViewMatrixInverse;
uniform mat4 gl_ProjectionMatrixInverse;
uniform gl_MaterialParameters gl_FrontMaterial;
uniform gl_MaterialParameters gl_BackMaterial;
+/* NOTE: the order of these fields is significant!
+ * See the definition of the lighting state vars such as STATE_SPOT_DIRECTION.
+ */
struct gl_LightSourceParameters {
vec4 ambient;
vec4 diffuse;
vec4 position;
vec4 halfVector;
vec3 spotDirection;
- float spotExponent;
- float spotCutoff;
float spotCosCutoff;
+
float constantAttenuation;
float linearAttenuation;
float quadraticAttenuation;
+ float spotExponent;
+
+ float spotCutoff;
};
uniform gl_LightSourceParameters gl_LightSource[gl_MaxLights];
float radians(const float deg)
{
const float c = 3.1415926 / 180.0;
- __asm vec4_multiply __retVal.x, deg, c;
+ __asm vec4_multiply __retVal, deg, c;
}
vec2 radians(const vec2 deg)
float degrees(const float rad)
{
const float c = 180.0 / 3.1415926;
- __asm vec4_multiply __retVal.x, rad, c;
+ __asm vec4_multiply __retVal, rad, c;
}
vec2 degrees(const vec2 rad)
{
- const float c = 3.1415926 / 180.0;
+ const float c = 180.0 / 3.1415926;
__asm vec4_multiply __retVal.xy, rad.xy, c.xx;
}
vec3 degrees(const vec3 rad)
{
- const float c = 3.1415926 / 180.0;
+ const float c = 180.0 / 3.1415926;
__asm vec4_multiply __retVal.xyz, rad.xyz, c.xxx;
}
vec4 degrees(const vec4 rad)
{
- const float c = 3.1415926 / 180.0;
+ const float c = 180.0 / 3.1415926;
__asm vec4_multiply __retVal, rad, c.xxxx;
}
float sin(const float radians)
{
- __asm float_sine __retVal.x, radians;
+ __asm float_sine __retVal, radians;
}
vec2 sin(const vec2 radians)
float cos(const float radians)
{
- __asm float_cosine __retVal.x, radians;
+ __asm float_cosine __retVal, radians;
}
vec2 cos(const vec2 radians)
float atan(const float y, const float x)
{
- if (x == 0.0)
- return 0.0;
- float z = atan(y / x);
- if (x < 0.0)
- {
- if (y < 0.0)
- return z - 3.141593;
- return z + 3.141593;
- }
- return z;
+ float r;
+ if (abs(x) > 1.0e-4) {
+ r = atan(y / x);
+ if (x < 0.0) {
+ r = r + sign(y) * 3.141593;
+ }
+ }
+ else {
+ r = sign(y) * 1.5707965; // pi/2
+ }
+ return r;
}
vec2 atan(const vec2 u, const vec2 v)
float pow(const float a, const float b)
{
- __asm float_power __retVal.x, a, b;
+ __asm float_power __retVal, a, b;
}
vec2 pow(const vec2 a, const vec2 b)
float exp(const float a)
{
- const float e = 2.71828;
- __asm float_power __retVal, e, a;
+ // NOTE: log2(e) = 1.44269502
+ float t = a * 1.44269502;
+ __asm float_exp2 __retVal, t;
}
vec2 exp(const vec2 a)
{
- const float e = 2.71828;
- __asm float_power __retVal.x, e, a.x;
- __asm float_power __retVal.y, e, a.y;
+ vec2 t = a * 1.44269502;
+ __asm float_exp2 __retVal.x, t.x;
+ __asm float_exp2 __retVal.y, t.y;
}
vec3 exp(const vec3 a)
{
- const float e = 2.71828;
- __asm float_power __retVal.x, e, a.x;
- __asm float_power __retVal.y, e, a.y;
- __asm float_power __retVal.z, e, a.z;
+ vec3 t = a * 1.44269502;
+ __asm float_exp2 __retVal.x, t.x;
+ __asm float_exp2 __retVal.y, t.y;
+ __asm float_exp2 __retVal.z, t.z;
}
vec4 exp(const vec4 a)
{
- const float e = 2.71828;
- __asm float_power __retVal.x, e, a.x;
- __asm float_power __retVal.y, e, a.y;
- __asm float_power __retVal.z, e, a.z;
- __asm float_power __retVal.w, e, a.w;
+ vec4 t = a * 1.44269502;
+ __asm float_exp2 __retVal.x, t.x;
+ __asm float_exp2 __retVal.y, t.y;
+ __asm float_exp2 __retVal.z, t.z;
+ __asm float_exp2 __retVal.w, t.w;
}
float log2(const float x)
{
- __asm float_log2 __retVal.x, x;
+ __asm float_log2 __retVal, x;
}
vec2 log2(const vec2 v)
float exp2(const float a)
{
- __asm float_exp2 __retVal.x, a;
+ __asm float_exp2 __retVal, a;
}
vec2 exp2(const vec2 a)
{
float r;
__asm float_rsq r, x;
- __asm float_rcp __retVal.x, r;
+ __asm float_rcp __retVal, r;
}
vec2 sqrt(const vec2 v)
float normalize(const float x)
{
- __retVal.x = 1.0;
+ __retVal = 1.0;
}
vec2 normalize(const vec2 v)
{
const float s = inversesqrt(dot(v, v));
- __asm vec4_multiply __retVal.xy, v, s.xx;
+ __asm vec4_multiply __retVal.xy, v, s;
}
vec3 normalize(const vec3 v)
float tmp;
__asm vec3_dot tmp, v, v;
__asm float_rsq tmp, tmp;
- __asm vec4_multiply __retVal.xyz, v, tmp.xxx;
+ __asm vec4_multiply __retVal.xyz, v, tmp;
}
vec4 normalize(const vec4 v)
float tmp;
__asm vec4_dot tmp, v, v;
__asm float_rsq tmp, tmp;
- __asm vec4_multiply __retVal.xyz, v, tmp.xxx;
+ __asm vec4_multiply __retVal.xyz, v, tmp;
}
float abs(const float a)
{
- __asm vec4_abs __retVal.x, a;
+ __asm vec4_abs __retVal, a;
}
vec2 abs(const vec2 a)
float sign(const float x)
{
float p, n;
- __asm vec4_sgt p.x, x, 0.0; // p = (x > 0)
- __asm vec4_sgt n.x, 0.0, x; // n = (x < 0)
- __asm vec4_subtract __retVal.x, p, n; // sign = p - n
+ __asm vec4_sgt p, x, 0.0; // p = (x > 0)
+ __asm vec4_sgt n, 0.0, x; // n = (x < 0)
+ __asm vec4_subtract __retVal, p, n; // sign = p - n
}
vec2 sign(const vec2 v)
float floor(const float a)
{
- __asm vec4_floor __retVal.x, a;
+ __asm vec4_floor __retVal, a;
}
vec2 floor(const vec2 a)
// XXX this could be improved
float b = -a;
__asm vec4_floor b, b;
- __retVal.x = -b;
+ __retVal = -b;
}
vec2 ceil(const vec2 a)
float fract(const float a)
{
- __asm vec4_frac __retVal.x, a;
+ __asm vec4_frac __retVal, a;
}
vec2 fract(const vec2 a)
{
float oneOverB;
__asm float_rcp oneOverB, b;
- __retVal.x = a - b * floor(a * oneOverB);
+ __retVal = a - b * floor(a * oneOverB);
}
vec2 mod(const vec2 a, const float b)
vec2 mod(const vec2 a, const vec2 b)
{
- float oneOverBx, oneOverBy;
- __asm float_rcp oneOverBx, b.x;
- __asm float_rcp oneOverBy, b.y;
- __retVal.x = a.x - b.x * floor(a.x * oneOverBx);
- __retVal.y = a.y - b.y * floor(a.y * oneOverBy);
+ vec2 oneOverB;
+ __asm float_rcp oneOverB.x, b.x;
+ __asm float_rcp oneOverB.y, b.y;
+ __retVal = a - b * floor(a * oneOverB);
}
vec3 mod(const vec3 a, const vec3 b)
{
- float oneOverBx, oneOverBy, oneOverBz;
- __asm float_rcp oneOverBx, b.x;
- __asm float_rcp oneOverBy, b.y;
- __asm float_rcp oneOverBz, b.z;
- __retVal.x = a.x - b.x * floor(a.x * oneOverBx);
- __retVal.y = a.y - b.y * floor(a.y * oneOverBy);
- __retVal.z = a.z - b.z * floor(a.z * oneOverBz);
+ vec3 oneOverB;
+ __asm float_rcp oneOverB.x, b.x;
+ __asm float_rcp oneOverB.y, b.y;
+ __asm float_rcp oneOverB.z, b.z;
+ __retVal = a - b * floor(a * oneOverB);
}
vec4 mod(const vec4 a, const vec4 b)
{
- float oneOverBx, oneOverBy, oneOverBz, oneOverBw;
- __asm float_rcp oneOverBx, b.x;
- __asm float_rcp oneOverBy, b.y;
- __asm float_rcp oneOverBz, b.z;
- __asm float_rcp oneOverBw, b.w;
- __retVal.x = a.x - b.x * floor(a.x * oneOverBx);
- __retVal.y = a.y - b.y * floor(a.y * oneOverBy);
- __retVal.z = a.z - b.z * floor(a.z * oneOverBz);
- __retVal.w = a.w - b.w * floor(a.w * oneOverBw);
+ vec4 oneOverB;
+ __asm float_rcp oneOverB.x, b.x;
+ __asm float_rcp oneOverB.y, b.y;
+ __asm float_rcp oneOverB.z, b.z;
+ __asm float_rcp oneOverB.w, b.w;
+ __retVal = a - b * floor(a * oneOverB);
}
float min(const float a, const float b)
{
- __asm vec4_min __retVal.x, a.x, b.x;
+ __asm vec4_min __retVal, a, b;
}
vec2 min(const vec2 a, const vec2 b)
vec2 min(const vec2 a, const float b)
{
- __asm vec4_min __retVal, a.xy, b.xx;
+ __asm vec4_min __retVal, a.xy, b;
}
vec3 min(const vec3 a, const float b)
{
- __asm vec4_min __retVal, a.xyz, b.xxx;
+ __asm vec4_min __retVal, a.xyz, b;
}
vec4 min(const vec4 a, const float b)
{
- __asm vec4_min __retVal, a, b.xxxx;
+ __asm vec4_min __retVal, a, b;
}
float max(const float a, const float b)
{
- __asm vec4_max __retVal.x, a.x, b.x;
+ __asm vec4_max __retVal, a, b;
}
vec2 max(const vec2 a, const vec2 b)
vec2 max(const vec2 a, const float b)
{
- __asm vec4_max __retVal, a.xy, b.xx;
+ __asm vec4_max __retVal, a.xy, b;
}
vec3 max(const vec3 a, const float b)
{
- __asm vec4_max __retVal, a.xyz, b.xxx;
+ __asm vec4_max __retVal, a.xyz, b;
}
vec4 max(const vec4 a, const float b)
{
- __asm vec4_max __retVal, a, b.xxxx;
+ __asm vec4_max __retVal, a, b;
}
}
-//// step (untested)
+//// step
float step(const float edge, const float x)
{
- __asm vec4_sgt __retVal.x, x, edge;
+ __asm vec4_sge __retVal, x, edge;
}
vec2 step(const vec2 edge, const vec2 x)
{
- __asm vec4_sgt __retVal.xy, x, edge;
+ __asm vec4_sge __retVal.xy, x, edge;
}
vec3 step(const vec3 edge, const vec3 x)
{
- __asm vec4_sgt __retVal.xyz, x, edge;
+ __asm vec4_sge __retVal.xyz, x, edge;
}
vec4 step(const vec4 edge, const vec4 x)
{
- __asm vec4_sgt __retVal, x, edge;
+ __asm vec4_sge __retVal, x, edge;
}
vec2 step(const float edge, const vec2 v)
{
- __asm vec4_sgt __retVal.xy, v, edge.xx;
+ __asm vec4_sge __retVal.xy, v, edge;
}
vec3 step(const float edge, const vec3 v)
{
- __asm vec4_sgt __retVal.xyz, v, edge.xxx;
+ __asm vec4_sge __retVal.xyz, v, edge;
}
vec4 step(const float edge, const vec4 v)
{
- __asm vec4_sgt __retVal, v, edge.xxxx;
+ __asm vec4_sge __retVal, v, edge;
}
-//// smoothstep (untested)
+//// smoothstep
float smoothstep(const float edge0, const float edge1, const float x)
{
float r;
const float p = dot(v, v); // p = v.x * v.x + v.y * v.y + v.z * v.z
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal.x, r; // retVal = 1 / r
+ __asm float_rcp __retVal, r; // retVal = 1 / r
}
float length(const vec4 v)
float r;
const float p = dot(v, v); // p = v.x * v.x + v.y * v.y + ...
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal.x, r; // retVal = 1 / r
+ __asm float_rcp __retVal, r; // retVal = 1 / r
}
// this could probably be done better
const float d = dot(Nref, I);
float s;
- __asm vec4_sgt s.x, 0.0, d; // s = (0.0 > d) ? 1 : 0
+ __asm vec4_sgt s, 0.0, d; // s = (0.0 > d) ? 1 : 0
return mix(-N, N, s);
}
// this could probably be done better
const float d = dot(Nref, I);
float s;
- __asm vec4_sgt s.x, 0.0, d; // s = (0.0 > d) ? 1 : 0
+ __asm vec4_sgt s, 0.0, d; // s = (0.0 > d) ? 1 : 0
return mix(-N, N, s);
}
// this could probably be done better
const float d = dot(Nref, I);
float s;
- __asm vec4_sgt s.x, 0.0, d; // s = (0.0 > d) ? 1 : 0
+ __asm vec4_sgt s, 0.0, d; // s = (0.0 > d) ? 1 : 0
return mix(-N, N, s);
}
// this could probably be done better
const float d = dot(Nref, I);
float s;
- __asm vec4_sgt s.x, 0.0, d; // s = (0.0 > d) ? 1 : 0
+ __asm vec4_sgt s, 0.0, d; // s = (0.0 > d) ? 1 : 0
return mix(-N, N, s);
}
float refract(const float I, const float N, const float eta)
{
- float k = 1.0 - eta * eta * (1.0 - dot(N, I) * dot(N, I));
+ float n_dot_i = dot(N, I);
+ float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+ float retval;
if (k < 0.0)
- return 0.0;
- return eta * I - (eta * dot(N, I) + sqrt(k)) * N;
+ retval = 0.0;
+ else
+ retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+ return retval;
}
vec2 refract(const vec2 I, const vec2 N, const float eta)
{
- float k = 1.0 - eta * eta * (1.0 - dot(N, I) * dot(N, I));
+ float n_dot_i = dot(N, I);
+ float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+ vec2 retval;
if (k < 0.0)
- return 0.0;
- return eta * I - (eta * dot(N, I) + sqrt(k)) * N;
+ retval = vec2(0.0);
+ else
+ retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+ return retval;
}
vec3 refract(const vec3 I, const vec3 N, const float eta)
{
- float k = 1.0 - eta * eta * (1.0 - dot(N, I) * dot(N, I));
+ float n_dot_i = dot(N, I);
+ float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+ vec3 retval;
if (k < 0.0)
- return 0.0;
- return eta * I - (eta * dot(N, I) + sqrt(k)) * N;
+ retval = vec3(0.0);
+ else
+ retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+ return retval;
}
vec4 refract(const vec4 I, const vec4 N, const float eta)
{
- float k = 1.0 - eta * eta * (1.0 - dot(N, I) * dot(N, I));
+ float n_dot_i = dot(N, I);
+ float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+ vec4 retval;
if (k < 0.0)
- return 0.0;
- return eta * I - (eta * dot(N, I) + sqrt(k)) * N;
+ retval = vec4(0.0);
+ else
+ retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+ return retval;
}
bvec2 greaterThan(const ivec2 u, const ivec2 v)
{
- __asm vec4_sgt __retVal.xy, u, v;
+ __asm vec4_sgt __retVal.xy, u.xy, v.xy;
}
bvec3 greaterThan(const ivec3 u, const ivec3 v)
__asm vec4_seq __retVal, u, v;
}
+bvec2 equal(const bvec2 u, const bvec2 v)
+{
+ __asm vec4_seq __retVal.xy, u, v;
+}
+
+bvec3 equal(const bvec3 u, const bvec3 v)
+{
+ __asm vec4_seq __retVal.xyz, u, v;
+}
+
+bvec4 equal(const bvec4 u, const bvec4 v)
+{
+ __asm vec4_seq __retVal, u, v;
+}
+
+
+
//// notEqual
__asm vec4_sne __retVal, u, v;
}
+bvec2 notEqual(const bvec2 u, const bvec2 v)
+{
+ __asm vec4_sne __retVal.xy, u, v;
+}
+
+bvec3 notEqual(const bvec3 u, const bvec3 v)
+{
+ __asm vec4_sne __retVal.xyz, u, v;
+}
+
+bvec4 notEqual(const bvec4 u, const bvec4 v)
+{
+ __asm vec4_sne __retVal, u, v;
+}
+
+
//// any
//// all
-bool all (const vec2 v)
+bool all (const bvec2 v)
{
float prod;
- __asm vec4_multiply prod.x, v.x, v.y;
- __asm vec4_sne __retVal.x, prod.x, 0.0;
- return v.x && v.y;
+ __asm vec4_multiply prod, v.x, v.y;
+ __asm vec4_sne __retVal, prod, 0.0;
}
bool all (const bvec3 v)
{
float prod;
- __asm vec4_multiply prod.x, v.x, v.y;
- __asm vec4_multiply prod.x, prod.x, v.z;
- __asm vec4_sne __retVal.x, prod.x, 0.0;
+ __asm vec4_multiply prod, v.x, v.y;
+ __asm vec4_multiply prod, prod, v.z;
+ __asm vec4_sne __retVal, prod, 0.0;
}
bool all (const bvec4 v)
{
float prod;
- __asm vec4_multiply prod.x, v.x, v.y;
- __asm vec4_multiply prod.x, prod.x, v.z;
- __asm vec4_multiply prod.x, prod.x, v.w;
- __asm vec4_sne __retVal.x, prod.x, 0.0;
+ __asm vec4_multiply prod, v.x, v.y;
+ __asm vec4_multiply prod, prod, v.z;
+ __asm vec4_multiply prod, prod, v.w;
+ __asm vec4_sne __retVal, prod, 0.0;
}
projects / mesa.git / blobdiff