| // |
| // 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) |
| { |
| return static_cast<NativeT>(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(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->getInteger64v(pname, int64Params.data()); |
| |
| for (unsigned int i = 0; i < numParams; ++i) |
| { |
| outParams[i] = CastFromStateValue<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, uint64 |
| |
| 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] = 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 |
