1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLSL_impl.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,175 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef GrGLSL_impl_DEFINED
1.12 +#define GrGLSL_impl_DEFINED
1.13 +
1.14 +template<typename Self>
1.15 +template<typename T>
1.16 +inline Self GrGLSLExpr<Self>::VectorCastImpl(const T& expr) {
1.17 + if (expr.isZeros()) {
1.18 + return Self(0);
1.19 + }
1.20 + if (expr.isOnes()) {
1.21 + return Self(1);
1.22 + }
1.23 + return Self(Self::CastStr(), expr.c_str());
1.24 +}
1.25 +
1.26 +template<typename Self>
1.27 +template<typename T0, typename T1>
1.28 +inline Self GrGLSLExpr<Self>::Mul(T0 in0, T1 in1) {
1.29 + if (in0.isZeros() || in1.isZeros()) {
1.30 + return Self(0);
1.31 + }
1.32 + if (in0.isOnes()) {
1.33 + return Self::VectorCast(in1);
1.34 + }
1.35 + if (in1.isOnes()) {
1.36 + return Self::VectorCast(in0);
1.37 + }
1.38 + return Self("(%s * %s)", in0.c_str(), in1.c_str());
1.39 +}
1.40 +
1.41 +template<typename Self>
1.42 +template<typename T0, typename T1>
1.43 +inline Self GrGLSLExpr<Self>::Add(T0 in0, T1 in1) {
1.44 + if (in1.isZeros()) {
1.45 + return Self::VectorCast(in0);
1.46 + }
1.47 + if (in0.isZeros()) {
1.48 + return Self::VectorCast(in1);
1.49 + }
1.50 + if (in0.isOnes() && in1.isOnes()) {
1.51 + return Self(2);
1.52 + }
1.53 + return Self("(%s + %s)", in0.c_str(), in1.c_str());
1.54 +}
1.55 +
1.56 +template<typename Self>
1.57 +template<typename T0, typename T1>
1.58 +inline Self GrGLSLExpr<Self>::Sub(T0 in0, T1 in1) {
1.59 + if (in1.isZeros()) {
1.60 + return Self::VectorCast(in0);
1.61 + }
1.62 + if (in1.isOnes()) {
1.63 + if (in0.isOnes()) {
1.64 + return Self(0);
1.65 + }
1.66 + }
1.67 +
1.68 + return Self("(%s - %s)", in0.c_str(), in1.c_str());
1.69 +}
1.70 +
1.71 +template <typename Self>
1.72 +template <typename T>
1.73 +T GrGLSLExpr<Self>::extractComponents(const char format[]) const {
1.74 + if (this->isZeros()) {
1.75 + return T(0);
1.76 + }
1.77 + if (this->isOnes()) {
1.78 + return T(1);
1.79 + }
1.80 + return T(format, this->c_str());
1.81 +}
1.82 +
1.83 +inline GrGLSLExpr1 GrGLSLExpr1::VectorCast(const GrGLSLExpr1& expr) {
1.84 + return expr;
1.85 +}
1.86 +
1.87 +inline const char* GrGLSLExpr1::ZerosStr() {
1.88 + return "0";
1.89 +}
1.90 +
1.91 +inline const char* GrGLSLExpr1::OnesStr() {
1.92 + return "1.0";
1.93 +}
1.94 +
1.95 +// GrGLSLExpr1::CastStr() is unimplemented because using them is likely an
1.96 +// error. This is now caught compile-time.
1.97 +
1.98 +inline const char* GrGLSLExpr1::CastIntStr() {
1.99 + return "%d";
1.100 +}
1.101 +
1.102 +inline GrGLSLExpr1 operator*(const GrGLSLExpr1& in0, const GrGLSLExpr1& in1) {
1.103 + return GrGLSLExpr1::Mul(in0, in1);
1.104 +}
1.105 +
1.106 +inline GrGLSLExpr1 operator+(const GrGLSLExpr1& in0, const GrGLSLExpr1& in1) {
1.107 + return GrGLSLExpr1::Add(in0, in1);
1.108 +}
1.109 +
1.110 +inline GrGLSLExpr1 operator-(const GrGLSLExpr1& in0, const GrGLSLExpr1& in1) {
1.111 + return GrGLSLExpr1::Sub(in0, in1);
1.112 +}
1.113 +
1.114 +inline const char* GrGLSLExpr4::ZerosStr() {
1.115 + return "vec4(0)";
1.116 +}
1.117 +
1.118 +inline const char* GrGLSLExpr4::OnesStr() {
1.119 + return "vec4(1)";
1.120 +}
1.121 +
1.122 +inline const char* GrGLSLExpr4::CastStr() {
1.123 + return "vec4(%s)";
1.124 +}
1.125 +
1.126 +inline const char* GrGLSLExpr4::CastIntStr() {
1.127 + return "vec4(%d)";
1.128 +}
1.129 +
1.130 +inline GrGLSLExpr4 GrGLSLExpr4::VectorCast(const GrGLSLExpr1& expr) {
1.131 + return INHERITED::VectorCastImpl(expr);
1.132 +}
1.133 +
1.134 +inline GrGLSLExpr4 GrGLSLExpr4::VectorCast(const GrGLSLExpr4& expr) {
1.135 + return expr;
1.136 +}
1.137 +
1.138 +inline GrGLSLExpr4::AExpr GrGLSLExpr4::a() const {
1.139 + return this->extractComponents<GrGLSLExpr4::AExpr>("%s.a");
1.140 +}
1.141 +
1.142 +inline GrGLSLExpr4 operator*(const GrGLSLExpr1& in0, const GrGLSLExpr4& in1) {
1.143 + return GrGLSLExpr4::Mul(in0, in1);
1.144 +}
1.145 +
1.146 +inline GrGLSLExpr4 operator+(const GrGLSLExpr1& in0, const GrGLSLExpr4& in1) {
1.147 + return GrGLSLExpr4::Add(in0, in1);
1.148 +}
1.149 +
1.150 +inline GrGLSLExpr4 operator-(const GrGLSLExpr1& in0, const GrGLSLExpr4& in1) {
1.151 + return GrGLSLExpr4::Sub(in0, in1);
1.152 +}
1.153 +
1.154 +inline GrGLSLExpr4 operator*(const GrGLSLExpr4& in0, const GrGLSLExpr1& in1) {
1.155 + return GrGLSLExpr4::Mul(in0, in1);
1.156 +}
1.157 +
1.158 +inline GrGLSLExpr4 operator+(const GrGLSLExpr4& in0, const GrGLSLExpr1& in1) {
1.159 + return GrGLSLExpr4::Add(in0, in1);
1.160 +}
1.161 +
1.162 +inline GrGLSLExpr4 operator-(const GrGLSLExpr4& in0, const GrGLSLExpr1& in1) {
1.163 + return GrGLSLExpr4::Sub(in0, in1);
1.164 +}
1.165 +
1.166 +inline GrGLSLExpr4 operator*(const GrGLSLExpr4& in0, const GrGLSLExpr4& in1) {
1.167 + return GrGLSLExpr4::Mul(in0, in1);
1.168 +}
1.169 +
1.170 +inline GrGLSLExpr4 operator+(const GrGLSLExpr4& in0, const GrGLSLExpr4& in1) {
1.171 + return GrGLSLExpr4::Add(in0, in1);
1.172 +}
1.173 +
1.174 +inline GrGLSLExpr4 operator-(const GrGLSLExpr4& in0, const GrGLSLExpr4& in1) {
1.175 + return GrGLSLExpr4::Sub(in0, in1);
1.176 +}
1.177 +
1.178 +#endif
