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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_UTIL
#define SKSL_UTIL
#include <cstdarg>
#include <memory>
#include "stdlib.h"
#include "string.h"
#include "assert.h"
#include "SkSLString.h"
#include "SkSLStringStream.h"
#ifndef SKSL_STANDALONE
#include "GrContextOptions.h"
#include "GrShaderCaps.h"
#endif
#ifdef SKSL_STANDALONE
#if defined(_WIN32) || defined(__SYMBIAN32__)
#define SKSL_BUILD_FOR_WIN
#endif
#else
#ifdef SK_BUILD_FOR_WIN
#define SKSL_BUILD_FOR_WIN
#endif // SK_BUILD_FOR_WIN
#endif // SKSL_STANDALONE
namespace SkSL {
#ifdef SKSL_STANDALONE
// we're being compiled standalone, so we don't have access to caps...
enum GrGLSLGeneration {
k110_GrGLSLGeneration,
k130_GrGLSLGeneration,
k140_GrGLSLGeneration,
k150_GrGLSLGeneration,
k330_GrGLSLGeneration,
k400_GrGLSLGeneration,
k420_GrGLSLGeneration,
k310es_GrGLSLGeneration,
k320es_GrGLSLGeneration,
};
#define SKSL_CAPS_CLASS StandaloneShaderCaps
class StandaloneShaderCaps {
public:
GrGLSLGeneration generation() const {
return k400_GrGLSLGeneration;
}
bool canUseMinAndAbsTogether() const {
return true;
}
bool mustForceNegatedAtanParamToFloat() const {
return false;
}
bool shaderDerivativeSupport() const {
return true;
}
bool usesPrecisionModifiers() const {
return true;
}
bool mustDeclareFragmentShaderOutput() const {
return true;
}
bool fbFetchSupport() const {
return true;
}
bool fbFetchNeedsCustomOutput() const {
return false;
}
bool bindlessTextureSupport() const {
return false;
}
bool dropsTileOnZeroDivide() const {
return false;
}
bool flatInterpolationSupport() const {
return true;
}
bool noperspectiveInterpolationSupport() const {
return true;
}
bool multisampleInterpolationSupport() const {
return true;
}
bool sampleVariablesSupport() const {
return true;
}
bool sampleMaskOverrideCoverageSupport() const {
return true;
}
bool externalTextureSupport() const {
return true;
}
bool texelFetchSupport() const {
return true;
}
bool imageLoadStoreSupport() const {
return true;
}
bool mustEnableAdvBlendEqs() const {
return false;
}
bool mustEnableSpecificAdvBlendEqs() const {
return false;
}
bool canUseAnyFunctionInShader() const {
return false;
}
bool floatPrecisionVaries() const {
return false;
}
bool integerSupport() const {
return false;
}
const char* shaderDerivativeExtensionString() const {
return nullptr;
}
const char* fragCoordConventionsExtensionString() const {
return nullptr;
}
const char* imageLoadStoreExtensionString() const {
return nullptr;
}
const char* gsInvocationsExtensionString() const {
return nullptr;
}
const char* versionDeclString() const {
return "";
}
bool gsInvocationsSupport() const {
return true;
}
bool canUseFractForNegativeValues() const {
return true;
}
};
extern StandaloneShaderCaps standaloneCaps;
#else
#define SKSL_CAPS_CLASS GrShaderCaps
// Various sets of caps for use in tests
class ShaderCapsFactory {
public:
static sk_sp<GrShaderCaps> Default() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fShaderDerivativeSupport = true;
result->fGSInvocationsSupport = true;
return result;
}
static sk_sp<GrShaderCaps> Version450Core() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 450 core";
return result;
}
static sk_sp<GrShaderCaps> Version110() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 110";
result->fGLSLGeneration = GrGLSLGeneration::k110_GrGLSLGeneration;
return result;
}
static sk_sp<GrShaderCaps> UsesPrecisionModifiers() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fUsesPrecisionModifiers = true;
return result;
}
static sk_sp<GrShaderCaps> CannotUseMinAndAbsTogether() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fCanUseMinAndAbsTogether = false;
return result;
}
static sk_sp<GrShaderCaps> CannotUseFractForNegativeValues() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fCanUseFractForNegativeValues = false;
return result;
}
static sk_sp<GrShaderCaps> MustForceNegatedAtanParamToFloat() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fMustForceNegatedAtanParamToFloat = true;
return result;
}
static sk_sp<GrShaderCaps> ShaderDerivativeExtensionString() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fShaderDerivativeSupport = true;
result->fShaderDerivativeExtensionString = "GL_OES_standard_derivatives";
result->fUsesPrecisionModifiers = true;
return result;
}
static sk_sp<GrShaderCaps> FragCoordsOld() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 110";
result->fGLSLGeneration = GrGLSLGeneration::k110_GrGLSLGeneration;
result->fFragCoordConventionsExtensionString = "GL_ARB_fragment_coord_conventions";
return result;
}
static sk_sp<GrShaderCaps> FragCoordsNew() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fFragCoordConventionsExtensionString = "GL_ARB_fragment_coord_conventions";
return result;
}
static sk_sp<GrShaderCaps> NoGSInvocationsSupport() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fGeometryShaderSupport = true;
result->fGSInvocationsSupport = false;
return result;
}
static sk_sp<GrShaderCaps> GSInvocationsExtensionString() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fGeometryShaderSupport = true;
result->fGSInvocationsSupport = true;
result->fGSInvocationsExtensionString = "GL_ARB_gpu_shader5";
return result;
}
static sk_sp<GrShaderCaps> VariousCaps() {
sk_sp<GrShaderCaps> result = sk_make_sp<GrShaderCaps>(GrContextOptions());
result->fVersionDeclString = "#version 400";
result->fExternalTextureSupport = true;
result->fFBFetchSupport = false;
result->fDropsTileOnZeroDivide = true;
result->fTexelFetchSupport = true;
result->fCanUseAnyFunctionInShader = false;
return result;
}
};
#endif
void write_stringstream(const StringStream& d, OutputStream& out);
#if _MSC_VER
#define NORETURN __declspec(noreturn)
#else
#define NORETURN __attribute__((__noreturn__))
#endif
NORETURN void sksl_abort();
} // namespace
#ifdef SKSL_STANDALONE
#define ASSERT(x) (void)((x) || (ABORT("failed assert(%s): %s:%d\n", #x, __FILE__, __LINE__), 0))
#define ASSERT_RESULT(x) ASSERT(x)
#define SKSL_DEBUGCODE(x) x
#else
#define ASSERT SkASSERT
#define ASSERT_RESULT(x) SkAssertResult(x)
#define SKSL_DEBUGCODE(x) SkDEBUGCODE(x)
#endif
#define SKSL_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#if defined(__clang__) || defined(__GNUC__)
#define SKSL_PRINTF_LIKE(A, B) __attribute__((format(printf, (A), (B))))
#else
#define SKSL_PRINTF_LIKE(A, B)
#endif
#define ABORT(...) (printf(__VA_ARGS__), sksl_abort())
#endif
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