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Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/queryconversions.cpp')
| -rw-r--r-- | gfx/angle/checkout/src/libANGLE/queryconversions.cpp | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/queryconversions.cpp b/gfx/angle/checkout/src/libANGLE/queryconversions.cpp new file mode 100644 index 0000000000..3c3ab45b7c --- /dev/null +++ b/gfx/angle/checkout/src/libANGLE/queryconversions.cpp @@ -0,0 +1,315 @@ +// +// Copyright 2014 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// queryconversions.cpp: Implementation of state query cast conversions + +#include "libANGLE/queryconversions.h" + +#include <vector> + +#include "common/utilities.h" +#include "libANGLE/Context.h" + +namespace gl +{ + +namespace +{ + +GLint64 ExpandFloatToInteger(GLfloat value) +{ + return static_cast<GLint64>((static_cast<double>(0xFFFFFFFFULL) * value - 1.0) / 2.0); +} + +template <typename QueryT, typename NativeT> +QueryT CastFromStateValueToInt(GLenum pname, NativeT value) +{ + GLenum nativeType = GLTypeToGLenum<NativeT>::value; + + if (nativeType == GL_FLOAT) + { + // RGBA color values and DepthRangeF values are converted to integer using Equation 2.4 from + // Table 4.5 + switch (pname) + { + case GL_DEPTH_RANGE: + case GL_COLOR_CLEAR_VALUE: + case GL_DEPTH_CLEAR_VALUE: + case GL_BLEND_COLOR: + // GLES1 emulation: + // Also, several GLES1.x values need to be converted to integer with + // ExpandFloatToInteger rather than rounding. See GLES 1.1 spec 6.1.2 "Data + // Conversions". + case GL_ALPHA_TEST_REF: + case GL_CURRENT_COLOR: + return clampCast<QueryT>(ExpandFloatToInteger(static_cast<GLfloat>(value))); + default: + return clampCast<QueryT>(std::round(value)); + } + } + + return clampCast<QueryT>(value); +} + +template <typename NativeT, typename QueryT> +NativeT CastQueryValueToInt(GLenum pname, QueryT value) +{ + GLenum queryType = GLTypeToGLenum<QueryT>::value; + + if (queryType == GL_FLOAT) + { + // ARM devices cast float to uint differently than Intel. + // Basically, any negative floating point number becomes 0 + // when converted to unsigned int. Instead, convert to a signed + // int and then convert to unsigned int to "preserve the value" + // E.g. common case for tests is to pass in -1 as an invalid query + // value. If cast to a unsigned int it becomes 0 (GL_NONE) and is now + // a valid enum and negative tests fail. But converting to int + // and then to final unsigned int gives us 4294967295 (0xffffffff) + // which is what we want. + return static_cast<NativeT>(static_cast<GLint64>(std::round(value))); + } + + return static_cast<NativeT>(value); +} + +} // anonymous namespace + +GLint CastMaskValue(GLuint value) +{ + return clampCast<GLint>(value); +} + +template <typename QueryT, typename InternalT> +QueryT CastFromGLintStateValue(GLenum pname, InternalT value) +{ + return CastFromStateValue<QueryT, GLint>(pname, clampCast<GLint, InternalT>(value)); +} + +template GLfloat CastFromGLintStateValue<GLfloat, GLenum>(GLenum pname, GLenum value); +template GLint CastFromGLintStateValue<GLint, GLenum>(GLenum pname, GLenum value); +template GLint64 CastFromGLintStateValue<GLint64, GLenum>(GLenum pname, GLenum value); +template GLuint CastFromGLintStateValue<GLuint, GLenum>(GLenum pname, GLenum value); +template GLuint CastFromGLintStateValue<GLuint, GLint>(GLenum pname, GLint value); +template GLfloat CastFromGLintStateValue<GLfloat, GLint>(GLenum pname, GLint value); +template GLint CastFromGLintStateValue<GLint, GLint>(GLenum pname, GLint value); +template GLfloat CastFromGLintStateValue<GLfloat, bool>(GLenum pname, bool value); +template GLuint CastFromGLintStateValue<GLuint, bool>(GLenum pname, bool value); +template GLint CastFromGLintStateValue<GLint, bool>(GLenum pname, bool value); + +template <typename QueryT, typename NativeT> +QueryT CastFromStateValue(GLenum pname, NativeT value) +{ + GLenum queryType = GLTypeToGLenum<QueryT>::value; + + switch (queryType) + { + case GL_INT: + case GL_INT_64_ANGLEX: + case GL_UNSIGNED_INT: + case GL_UINT_64_ANGLEX: + return CastFromStateValueToInt<QueryT, NativeT>(pname, value); + case GL_FLOAT: + return static_cast<QueryT>(value); + case GL_BOOL: + return static_cast<QueryT>(value == static_cast<NativeT>(0) ? GL_FALSE : GL_TRUE); + default: + UNREACHABLE(); + return 0; + } +} +template GLint CastFromStateValue<GLint, GLint>(GLenum pname, GLint value); +template GLint CastFromStateValue<GLint, GLint64>(GLenum pname, GLint64 value); +template GLint64 CastFromStateValue<GLint64, GLint>(GLenum pname, GLint value); +template GLint64 CastFromStateValue<GLint64, GLint64>(GLenum pname, GLint64 value); +template GLfloat CastFromStateValue<GLfloat, GLint>(GLenum pname, GLint value); +template GLfloat CastFromStateValue<GLfloat, GLuint>(GLenum pname, GLuint value); +template GLfloat CastFromStateValue<GLfloat, GLfloat>(GLenum pname, GLfloat value); +template GLint CastFromStateValue<GLint, GLfloat>(GLenum pname, GLfloat value); +template GLuint CastFromStateValue<GLuint, GLfloat>(GLenum pname, GLfloat value); +template GLuint CastFromStateValue<GLuint, GLint>(GLenum pname, GLint value); +template GLuint CastFromStateValue<GLuint, GLuint>(GLenum pname, GLuint value); +template GLint CastFromStateValue<GLint, GLboolean>(GLenum pname, GLboolean value); +template GLint64 CastFromStateValue<GLint64, GLboolean>(GLenum pname, GLboolean value); +template GLint CastFromStateValue<GLint, GLuint>(GLenum pname, GLuint value); +template GLint64 CastFromStateValue<GLint64, GLuint>(GLenum pname, GLuint value); +template GLuint64 CastFromStateValue<GLuint64, GLuint>(GLenum pname, GLuint value); + +template <typename NativeT, typename QueryT> +NativeT CastQueryValueTo(GLenum pname, QueryT value) +{ + GLenum nativeType = GLTypeToGLenum<NativeT>::value; + + switch (nativeType) + { + case GL_INT: + case GL_INT_64_ANGLEX: + case GL_UNSIGNED_INT: + case GL_UINT_64_ANGLEX: + return CastQueryValueToInt<NativeT, QueryT>(pname, value); + case GL_FLOAT: + return static_cast<NativeT>(value); + case GL_BOOL: + return static_cast<NativeT>(value == static_cast<QueryT>(0) ? GL_FALSE : GL_TRUE); + default: + UNREACHABLE(); + return 0; + } +} + +template GLint CastQueryValueTo<GLint, GLfloat>(GLenum pname, GLfloat value); +template GLboolean CastQueryValueTo<GLboolean, GLint>(GLenum pname, GLint value); +template GLint CastQueryValueTo<GLint, GLint>(GLenum pname, GLint value); +template GLint CastQueryValueTo<GLint, GLuint>(GLenum pname, GLuint value); +template GLfloat CastQueryValueTo<GLfloat, GLint>(GLenum pname, GLint value); +template GLfloat CastQueryValueTo<GLfloat, GLuint>(GLenum pname, GLuint value); +template GLfloat CastQueryValueTo<GLfloat, GLfloat>(GLenum pname, GLfloat value); +template GLuint CastQueryValueTo<GLuint, GLint>(GLenum pname, GLint value); +template GLuint CastQueryValueTo<GLuint, GLuint>(GLenum pname, GLuint value); +template GLuint CastQueryValueTo<GLuint, GLfloat>(GLenum pname, GLfloat value); + +template <typename QueryT> +void CastStateValues(const Context *context, + GLenum nativeType, + GLenum pname, + unsigned int numParams, + QueryT *outParams) +{ + if (nativeType == GL_INT) + { + std::vector<GLint> intParams(numParams, 0); + context->getIntegervImpl(pname, intParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastFromStateValue<QueryT>(pname, intParams[i]); + } + } + else if (nativeType == GL_BOOL) + { + std::vector<GLboolean> boolParams(numParams, GL_FALSE); + context->getBooleanvImpl(pname, boolParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = + (boolParams[i] == GL_FALSE ? static_cast<QueryT>(0) : static_cast<QueryT>(1)); + } + } + else if (nativeType == GL_FLOAT) + { + std::vector<GLfloat> floatParams(numParams, 0.0f); + context->getFloatvImpl(pname, floatParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastFromStateValue<QueryT>(pname, floatParams[i]); + } + } + else if (nativeType == GL_INT_64_ANGLEX) + { + std::vector<GLint64> int64Params(numParams, 0); + context->getInteger64vImpl(pname, int64Params.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastFromStateValue<QueryT>(pname, int64Params[i]); + } + } + else + { + WARN() << "Application querying parameter that does not exist."; + } +} + +// Explicit template instantiation (how we export template functions in different files) +// The calls below will make CastStateValues successfully link with the GL state query types +// The GL state query API types are: bool, int, uint, float, int64, uint64 + +template void CastStateValues<GLboolean>(const Context *, + GLenum, + GLenum, + unsigned int, + GLboolean *); +template void CastStateValues<GLint>(const Context *, GLenum, GLenum, unsigned int, GLint *); +template void CastStateValues<GLuint>(const Context *, GLenum, GLenum, unsigned int, GLuint *); +template void CastStateValues<GLfloat>(const Context *, GLenum, GLenum, unsigned int, GLfloat *); +template void CastStateValues<GLint64>(const Context *, GLenum, GLenum, unsigned int, GLint64 *); + +template <typename QueryT> +void CastIndexedStateValues(Context *context, + GLenum nativeType, + GLenum pname, + GLuint index, + unsigned int numParams, + QueryT *outParams) +{ + if (nativeType == GL_INT) + { + std::vector<GLint> intParams(numParams, 0); + context->getIntegeri_v(pname, index, intParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastFromStateValue<QueryT>(pname, intParams[i]); + } + } + else if (nativeType == GL_BOOL) + { + std::vector<GLboolean> boolParams(numParams, GL_FALSE); + context->getBooleani_v(pname, index, boolParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = + (boolParams[i] == GL_FALSE ? static_cast<QueryT>(0) : static_cast<QueryT>(1)); + } + } + else if (nativeType == GL_INT_64_ANGLEX) + { + std::vector<GLint64> int64Params(numParams, 0); + context->getInteger64i_v(pname, index, int64Params.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastFromStateValue<QueryT>(pname, int64Params[i]); + } + } + else + UNREACHABLE(); +} + +template void CastIndexedStateValues<GLboolean>(Context *, + GLenum, + GLenum, + GLuint index, + unsigned int, + GLboolean *); +template void CastIndexedStateValues<GLint>(Context *, + GLenum, + GLenum, + GLuint index, + unsigned int, + GLint *); +template void CastIndexedStateValues<GLuint>(Context *, + GLenum, + GLenum, + GLuint index, + unsigned int, + GLuint *); +template void CastIndexedStateValues<GLfloat>(Context *, + GLenum, + GLenum, + GLuint index, + unsigned int, + GLfloat *); +template void CastIndexedStateValues<GLint64>(Context *, + GLenum, + GLenum, + GLuint index, + unsigned int, + GLint64 *); +} // namespace gl |