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