/*
* 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"),
// From Shader Spec, ver. 1.10, rev. 59
//
-//bp: XXX these will probably go away since the value needs to be
-//determined at runtime and may vary from one GLcontext to another...
+// Note: the values assigned to these constants here aren't actually used.
+// They're set by the compiler according to the GL context limits.
+// See slang_simplify.c
const int gl_MaxLights = 8;
const int gl_MaxClipPlanes = 6;
const int gl_MaxTextureUnits = 8;
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 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 sqrt(const float x)
{
+ const float nx = -x;
float r;
__asm float_rsq r, x;
- __asm float_rcp __retVal, r;
+ r = r * x;
+ __asm vec4_cmp __retVal, nx, r, 0.0;
}
-vec2 sqrt(const vec2 v)
+vec2 sqrt(const vec2 x)
{
- float r;
- __asm float_rsq r, v.x;
- __asm float_rcp __retVal.x, r;
- __asm float_rsq r, v.y;
- __asm float_rcp __retVal.y, r;
+ const vec2 nx = -x, zero = vec2(0.0);
+ vec2 r;
+ __asm float_rsq r.x, x.x;
+ __asm float_rsq r.y, x.y;
+ r = r * x;
+ __asm vec4_cmp __retVal, nx, r, zero;
}
-vec3 sqrt(const vec3 v)
+vec3 sqrt(const vec3 x)
{
- float r;
- __asm float_rsq r, v.x;
- __asm float_rcp __retVal.x, r;
- __asm float_rsq r, v.y;
- __asm float_rcp __retVal.y, r;
- __asm float_rsq r, v.z;
- __asm float_rcp __retVal.z, r;
+ const vec3 nx = -x, zero = vec3(0.0);
+ vec3 r;
+ __asm float_rsq r.x, x.x;
+ __asm float_rsq r.y, x.y;
+ __asm float_rsq r.z, x.z;
+ r = r * x;
+ __asm vec4_cmp __retVal, nx, r, zero;
}
-vec4 sqrt(const vec4 v)
+vec4 sqrt(const vec4 x)
{
- float r;
- __asm float_rsq r, v.x;
- __asm float_rcp __retVal.x, r;
- __asm float_rsq r, v.y;
- __asm float_rcp __retVal.y, r;
- __asm float_rsq r, v.z;
- __asm float_rcp __retVal.z, r;
- __asm float_rsq r, v.w;
- __asm float_rcp __retVal.w, r;
+ const vec4 nx = -x, zero = vec4(0.0);
+ vec4 r;
+ __asm float_rsq r.x, x.x;
+ __asm float_rsq r.y, x.y;
+ __asm float_rsq r.z, x.z;
+ __asm float_rsq r.w, x.w;
+ r = r * x;
+ __asm vec4_cmp __retVal, nx, r, zero;
}
{
// const float s = inversesqrt(dot(v, v));
// __retVal = v * s;
-// XXX note, we _could_ use __retVal.w instead of tmp and and save a
+// XXX note, we _could_ use __retVal.w instead of tmp and save a
// register, but that's actually a compilation error because v is a vec3
// and the .w suffix is illegal. Oh well.
float tmp;
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);
}
}
-//// 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
__asm float_rsq r, p; // r = 1 / sqrt(p)
- __asm float_rcp __retVal.x, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
float length(const vec3 v)
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, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
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, r; // retVal = 1 / r
+ __retVal = p * r; // p * r = sqrt(p);
}
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;
}
vec4 texture1D(const sampler1D sampler, const float coord)
{
- __asm vec4_tex1d __retVal, sampler, coord;
+ __asm vec4_tex_1d __retVal, sampler, coord;
}
vec4 texture1DProj(const sampler1D sampler, const vec2 coord)
{
// need to swizzle .y into .w
- __asm vec4_texp1d __retVal, sampler, coord.xyyy;
+ __asm vec4_tex_1d_proj __retVal, sampler, coord.xyyy;
}
vec4 texture1DProj(const sampler1D sampler, const vec4 coord)
{
- __asm vec4_texp1d __retVal, sampler, coord;
+ __asm vec4_tex_1d_proj __retVal, sampler, coord;
}
vec4 texture2D(const sampler2D sampler, const vec2 coord)
{
- __asm vec4_tex2d __retVal, sampler, coord;
+ __asm vec4_tex_2d __retVal, sampler, coord;
}
vec4 texture2DProj(const sampler2D sampler, const vec3 coord)
{
// need to swizzle 'z' into 'w'.
- __asm vec4_texp2d __retVal, sampler, coord.xyzz;
+ __asm vec4_tex_2d_proj __retVal, sampler, coord.xyzz;
}
vec4 texture2DProj(const sampler2D sampler, const vec4 coord)
{
- __asm vec4_texp2d __retVal, sampler, coord;
+ __asm vec4_tex_2d_proj __retVal, sampler, coord;
}
vec4 texture3D(const sampler3D sampler, const vec3 coord)
{
- __asm vec4_tex3d __retVal, sampler, coord;
+ __asm vec4_tex_3d __retVal, sampler, coord;
}
vec4 texture3DProj(const sampler3D sampler, const vec4 coord)
{
- __asm vec4_texp3d __retVal, sampler, coord;
+ __asm vec4_tex_3d_proj __retVal, sampler, coord;
}
vec4 textureCube(const samplerCube sampler, const vec3 coord)
{
- __asm vec4_texcube __retVal, sampler, coord;
+ __asm vec4_tex_cube __retVal, sampler, coord;
}
vec4 shadow1D(const sampler1DShadow sampler, const vec3 coord)
{
- __asm vec4_tex1d __retVal, sampler, coord;
+ __asm vec4_tex_1d_shadow __retVal, sampler, coord;
}
vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord)
{
// .s and .p will be divided by .q
- __asm vec4_texp1d __retVal, sampler, coord;
+ __asm vec4_tex_1d_proj_shadow __retVal, sampler, coord;
}
vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord)
{
- __asm vec4_tex2d __retVal, sampler, coord;
+ __asm vec4_tex_2d_shadow __retVal, sampler, coord;
}
vec4 shadow2DProj(const sampler2DShadow sampler, const vec4 coord)
{
// .s, .t and .p will be divided by .q
- __asm vec4_texp2d __retVal, sampler, coord;
+ __asm vec4_tex_2d_proj_shadow __retVal, sampler, coord;
}
vec4 texture2DRectProj(const sampler2DRect sampler, const vec3 coord)
{
// need to swizzle .y into .w
- __asm vec4_texp_rect __retVal, sampler, coord.xyzz;
+ __asm vec4_tex_rect_proj __retVal, sampler, coord.xyzz;
}
vec4 texture2DRectProj(const sampler2DRect sampler, const vec4 coord)
{
- __asm vec4_texp_rect __retVal, sampler, ccoord;
+ __asm vec4_tex_rect_proj __retVal, sampler, ccoord;
}
vec4 shadow2DRect(const sampler2DRectShadow sampler, const vec3 coord)
{
- __asm vec4_tex_rect __retVal, sampler, coord;
+ __asm vec4_tex_rect_shadow __retVal, sampler, coord;
}
vec4 shadow2DRectProj(const sampler2DRectShadow sampler, const vec4 coord)
{
- __asm vec4_texp_rect __retVal, sampler, coord;
+ __asm vec4_tex_rect_proj_shadow __retVal, sampler, coord;
+}
+
+
+
+//// GL_EXT_texture_array
+vec4 texture1DArray(const sampler1DArray sampler, const vec2 coord)
+{
+ __asm vec4_tex_1d_array __retVal, sampler, coord;
}
+vec4 texture2DArray(const sampler2DArray sampler, const vec3 coord)
+{
+ __asm vec4_tex_2d_array __retVal, sampler, coord;
+}
//
projects / mesa.git / blobdiff