diff options
Diffstat (limited to 'gfx/angle/src/libANGLE/queryconversions.cpp')
| -rwxr-xr-x | gfx/angle/src/libANGLE/queryconversions.cpp | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/queryconversions.cpp b/gfx/angle/src/libANGLE/queryconversions.cpp new file mode 100755 index 000000000..611fbc4ba --- /dev/null +++ b/gfx/angle/src/libANGLE/queryconversions.cpp @@ -0,0 +1,219 @@ +// +// Copyright (c) 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 "libANGLE/Context.h" +#include "common/utilities.h" + +namespace gl +{ + +namespace +{ + +GLint64 ExpandFloatToInteger(GLfloat value) +{ + return static_cast<GLint64>((static_cast<double>(0xFFFFFFFFULL) * value - 1.0) / 2.0); +} + +template <typename QueryT> +QueryT ClampToQueryRange(GLint64 value) +{ + const GLint64 min = static_cast<GLint64>(std::numeric_limits<QueryT>::min()); + const GLint64 max = static_cast<GLint64>(std::numeric_limits<QueryT>::max()); + return static_cast<QueryT>(clamp(value, min, max)); +} + +template <typename QueryT, typename NativeT> +QueryT CastStateValueToInt(GLenum pname, NativeT value) +{ + GLenum queryType = GLTypeToGLenum<QueryT>::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 + if (pname == GL_DEPTH_RANGE || pname == GL_COLOR_CLEAR_VALUE || pname == GL_DEPTH_CLEAR_VALUE || pname == GL_BLEND_COLOR) + { + return ClampToQueryRange<QueryT>(ExpandFloatToInteger(static_cast<GLfloat>(value))); + } + else + { + return gl::iround<QueryT>(static_cast<GLfloat>(value)); + } + } + + // Clamp 64-bit int values when casting to int + if (nativeType == GL_INT_64_ANGLEX && queryType == GL_INT) + { + GLint64 minIntValue = static_cast<GLint64>(std::numeric_limits<GLint>::min()); + GLint64 maxIntValue = static_cast<GLint64>(std::numeric_limits<GLint>::max()); + GLint64 clampedValue = std::max(std::min(static_cast<GLint64>(value), maxIntValue), minIntValue); + return static_cast<QueryT>(clampedValue); + } + + return static_cast<QueryT>(value); +} + +template <typename QueryT, typename NativeT> +QueryT CastStateValue(GLenum pname, NativeT value) +{ + GLenum queryType = GLTypeToGLenum<QueryT>::value; + + switch (queryType) + { + case GL_INT: + return CastStateValueToInt<QueryT, NativeT>(pname, value); + case GL_INT_64_ANGLEX: + return CastStateValueToInt<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; + } +} + +} // anonymous namespace + +template <typename QueryT> +void CastStateValues(Context *context, GLenum nativeType, GLenum pname, + unsigned int numParams, QueryT *outParams) +{ + if (nativeType == GL_INT) + { + std::vector<GLint> intParams(numParams, 0); + context->getIntegerv(pname, intParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastStateValue<QueryT>(pname, intParams[i]); + } + } + else if (nativeType == GL_BOOL) + { + std::vector<GLboolean> boolParams(numParams, GL_FALSE); + context->getBooleanv(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->getFloatv(pname, floatParams.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastStateValue<QueryT>(pname, floatParams[i]); + } + } + else if (nativeType == GL_INT_64_ANGLEX) + { + std::vector<GLint64> int64Params(numParams, 0); + context->getInteger64v(pname, int64Params.data()); + + for (unsigned int i = 0; i < numParams; ++i) + { + outParams[i] = CastStateValue<QueryT>(pname, int64Params[i]); + } + } + else UNREACHABLE(); +} + +// 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 + +template void CastStateValues<GLboolean>(Context *, GLenum, GLenum, unsigned int, GLboolean *); +template void CastStateValues<GLint>(Context *, GLenum, GLenum, unsigned int, GLint *); +template void CastStateValues<GLuint>(Context *, GLenum, GLenum, unsigned int, GLuint *); +template void CastStateValues<GLfloat>(Context *, GLenum, GLenum, unsigned int, GLfloat *); +template void CastStateValues<GLint64>(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] = CastStateValue<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] = CastStateValue<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 *); +} |