mirror of
https://github.com/MobileGL-Dev/MobileGL
synced 2026-09-12 06:08:30 +09:00
BZLZHH
2dcc15bb0e
glProgramParameteri is not core before GL 4.1, so in the 4.0 context the CTS runs it only exists through GL_ARB_get_program_binary or GL_ARB_separate_shader_objects. MobileGL advertised neither, so dEQP's loader left the entry point null - and KHR-GL40.api.coverage, which registers glProgramParameteri from GL 3.2 upwards, called straight through the null pointer and took the process down. GL_NUM_PROGRAM_BINARY_FORMATS was already 0, and the extension explicitly allows an implementation to support no binary format at all; that is the honest state of things here, since a MobileGL program is a glslang link plus a per-backend translation with no serialised form. So the extension is advertised for what it really provides: glProgramParameteri stores GL_PROGRAM_BINARY_RETRIEVABLE_HINT (reported back by glGetProgramiv alongside a GL_PROGRAM_BINARY_LENGTH of zero), glGetProgramBinary is the INVALID_OPERATION the spec requires when that length is zero, and glProgramBinary rejects every format with INVALID_ENUM and leaves the program's LINK_STATUS false. Applications that ask for a binary get the documented "no formats" answer and fall back, which is what they already had to do - only now they can ask.
642 lines
35 KiB
C++
642 lines
35 KiB
C++
// MobileGL - MobileGL/MG_State/GLState/ProgramState/ProgramObject.h
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// Copyright (c) 2025-2026 MobileGL-Dev
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// Licensed under the GNU Lesser General Public License v3.0:
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// https://www.gnu.org/licenses/gpl-3.0.txt
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// https://www.gnu.org/licenses/lgpl-3.0.txt
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// SPDX-License-Identifier: LGPL-3.0-only
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// End of Source File Header
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#pragma once
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#include <Includes.h>
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#include "ShaderObject.h"
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#include <MG_Util/Metrics/BufferMetrics.h>
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#include <MG_Util/ShaderTranspiler/SpvcSession.h>
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namespace MobileGL::MG_State::GLState {
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class ProgramObject {
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public:
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ProgramObject(Uint externalIndex) : m_externalIndex(externalIndex), m_lifetimeId(AllocateLifetimeId()) {}
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bool ShaderIsAttached(const SharedPtr<ShaderObject>& shader);
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// GL-visible attachment: in the attach list and not pending detach (glDetachShader
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// defers the actual removal to the next link).
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Bool ShaderIsAttachedGLVisible(const SharedPtr<ShaderObject>& shader) const {
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const auto matches = [&shader](const SharedPtr<ShaderObject>& s) { return s.get() == shader.get(); };
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if (std::none_of(m_shaders.begin(), m_shaders.end(), matches)) return false;
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return std::none_of(m_detachedShaders.begin(), m_detachedShaders.end(), matches);
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}
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bool AttachShader(const SharedPtr<ShaderObject>& shader);
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SizeT DetachShader(const SharedPtr<ShaderObject>& shader);
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SizeT RemoveShader(const SharedPtr<ShaderObject>& shader);
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void Link(Bool addDefaultFSIfMissingForRenderingPipelineProgram = false);
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void MarkAsDeleted();
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void SetExplicitVertexInLocation(Uint index, const char* name);
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void SetExplicitFragmentOutLocation(Uint index, const char* name);
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// Dual-source blend color index (glBindFragDataLocationIndexed). Takes effect on next link.
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void SetExplicitFragmentOutIndex(Uint colorIndex, const char* name);
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void SetMaxFragmentOutputColorNumber(Int maxDrawBuffers) {
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m_maxFragmentOutputColorNumber = maxDrawBuffers;
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}
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Int GetFragmentDataLocation(const char* name);
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// Bound color index for an active fragment output (0 by default), or -1 if name is not one.
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Int GetFragmentDataIndex(const char* name);
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Vector<SharedPtr<ShaderObject>>& GetAttachedShaders();
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const Vector<SharedPtr<ShaderObject>>& GetAttachedShaders() const;
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const String& GetInfoLog() const { return m_infoLog; }
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Int GetUniformMaxLength() const { return m_uniformNameMaxLength; }
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Uint GetUniformCount() const { return m_activeUniformCount; }
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Uint GetMaxUniformLocation() const { return m_maxUniformLocation; }
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Int GetUniformLocation(const String& name) const {
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const auto it = m_uniformLocations.find(name);
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if (it != m_uniformLocations.end()) return (Int)it->second;
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// Reflection stores GL-style names: an array uniform is keyed "arr[0]" (its base
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// location). A bare "arr" query resolves to that entry; an "arr[k]" query resolves
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// to base + k because DoReflection reserves one location per array element.
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if (name.empty()) return -1;
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if (name.back() != ']') {
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const auto suffixedIt = m_uniformLocations.find(name + "[0]");
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if (suffixedIt != m_uniformLocations.end()) return (Int)suffixedIt->second;
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return -1;
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}
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if (name.length() < 4) return -1;
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const SizeT bracket = name.rfind('[');
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// Require at least one digit between the brackets.
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if (bracket == String::npos || bracket + 1 >= name.length() - 1) return -1;
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Uint element = 0;
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for (SizeT i = bracket + 1; i < name.length() - 1; ++i) {
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if (name[i] < '0' || name[i] > '9') return -1;
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element = element * 10 + static_cast<Uint>(name[i] - '0');
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if (element > 0x0FFFFFFFu) return -1;
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}
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auto baseIt = m_uniformLocations.find(name.substr(0, bracket) + "[0]");
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if (baseIt == m_uniformLocations.end()) {
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// Legacy key without the "[0]" suffix (defensive; reflection normally
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// stores the suffixed form for arrays).
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baseIt = m_uniformLocations.find(name.substr(0, bracket));
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if (baseIt == m_uniformLocations.end()) return -1;
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}
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const Int base = (Int)baseIt->second;
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if (!IsValidUniformLocation(base)) return -1;
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const Int index = m_uniformIndexInTProgram[base];
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// "[k]" only addresses arrays ("scalar[0]" is not a uniform name), and only
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// in-range elements.
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const glslang::TType* type = m_program->getUniform(index).getType();
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if (type == nullptr || !type->isArray()) return -1;
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if (static_cast<GLint>(element) >= GetActiveUniformArraySize(index)) return -1;
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const Int location = base + (Int)element;
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if (!UniformLocationsAliasSameUniform(base, location)) return -1;
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return location;
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}
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// True when both locations are element slots of the same uniform variable.
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Bool UniformLocationsAliasSameUniform(Int a, Int b) const {
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if (!IsValidUniformLocation(a) || !IsValidUniformLocation(b)) return false;
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return m_uniformIndexInTProgram[a] == m_uniformIndexInTProgram[b];
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}
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Int GetActiveUniformIndex(const String& name) const {
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const Int uniformIndex = m_program->getUniformIndex(name.c_str());
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if (uniformIndex >= 0 && uniformIndex < m_activeUniformCount &&
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m_program->getUniform(uniformIndex).name == name) {
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return uniformIndex;
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}
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// Reflection stores an array uniform under "arr[0]"; accept the bare "arr"
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// spelling too. The reverse ("arr[0]" against a bare "arr" entry) is kept for
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// robustness against non-suffixed reflection entries.
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if (!name.empty() && name.back() != ']') {
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const String suffixedName = name + "[0]";
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const Int suffixedIndex = m_program->getUniformIndex(suffixedName.c_str());
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if (suffixedIndex >= 0 && suffixedIndex < m_activeUniformCount &&
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m_program->getUniform(suffixedIndex).name == suffixedName) {
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return suffixedIndex;
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}
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return -1;
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}
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if (name.length() <= 3 || name.compare(name.length() - 3, 3, "[0]") != 0) return -1;
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const String baseName = name.substr(0, name.length() - 3);
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const Int baseIndex = m_program->getUniformIndex(baseName.c_str());
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if (baseIndex < 0 || baseIndex >= m_activeUniformCount) return -1;
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return m_program->getUniform(baseIndex).name == baseName ? baseIndex : -1;
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}
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Bool IsValidUniformLocation(Int location) const {
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if (location < 0 || location > static_cast<Int>(m_maxUniformLocation)) return false;
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if (static_cast<SizeT>(location) >= m_uniformIndexInTProgram.size()) return false;
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const Int uniformIndexInProgram = m_uniformIndexInTProgram[location];
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return uniformIndexInProgram != glslang::TQualifier::layoutLocationEnd &&
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uniformIndexInProgram >= 0 && uniformIndexInProgram < m_activeUniformCount;
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}
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GLenum GetUniformType(Uint location) const {
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auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
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return uniform.glDefineType;
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}
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GLenum GetActiveUniformType(Uint index) const {
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auto& uniform = m_program->getUniform(static_cast<Int>(index));
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return uniform.glDefineType;
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}
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// Number of active array elements (GL_UNIFORM_SIZE / GL_ARRAY_SIZE); 1 for a non-array.
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// glslang's TObjectReflection.size only carries the element count for a NON-block array; for
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// a block array member it reports 1, so take the count from the TType, which is authoritative
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// for both. GL 3.3 core uniforms are always sized.
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GLint GetActiveUniformArraySize(Uint index) const {
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const auto& uniform = m_program->getUniform(static_cast<Int>(index));
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const glslang::TType* type = uniform.getType();
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if (type != nullptr && type->isSizedArray()) {
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return type->getOuterArraySize();
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}
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return uniform.size < 1 ? 1 : uniform.size;
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}
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Int GetActiveUniformBlockIndex(Uint index) const {
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auto& uniform = m_program->getUniform(static_cast<Int>(index));
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return uniform.index;
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}
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// GL_UNIFORM_OFFSET: byte offset within the owning named block. glslang already reports -1
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// for a default-block uniform, which is exactly the spec value there.
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GLint GetActiveUniformOffset(Uint index) const {
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return m_program->getUniform(static_cast<Int>(index)).offset;
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}
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// GL_UNIFORM_ARRAY_STRIDE: byte stride of an array member in a named block; 0 for a non-array
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// block member; -1 for a default-block uniform (glslang yields arrayStride==0 there, so gate
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// on block membership for the spec-mandated -1). The stride itself is derived from the type
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// instead of glslang's reflected arrayStride: for an array nested inside a struct member,
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// glslang computes that field against the enclosing STRUCT's (unset) packing and reports a
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// tight std430-like stride (ivec2 a[7] -> 8), even though its own member offsets and the
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// generated SPIR-V lay the array out with std140 16-byte-rounded strides. MobileGL's UBO
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// layout is always std140, where every array element stride rounds up to a vec4.
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GLint GetActiveUniformArrayStride(Uint index) const {
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const auto& uniform = m_program->getUniform(static_cast<Int>(index));
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if (uniform.index < 0) return -1;
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const glslang::TType* type = uniform.getType();
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if (type == nullptr || !type->isArray()) return 0;
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if (type->isMatrix()) {
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const bool rowMajor = GetActiveUniformIsRowMajor(index) != 0;
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const int vectors = rowMajor ? type->getMatrixRows() : type->getMatrixCols();
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return GetActiveUniformMatrixStride(index) * vectors;
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}
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return 16; // scalars and vectors: std140 rounds the element stride up to a vec4
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}
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// GL_UNIFORM_IS_ROW_MAJOR: 1 only for a row-major matrix in a named block, else 0. The
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// isMatrix() guard is required -- glslang stamps a block-level layout(row_major) onto
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// non-matrix members too, so a float/vec in a row_major block would otherwise report 1.
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// For the glslang build here a block-level layout(row_major) is also resolved onto each
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// matrix member's own qualifier (verified by GetActiveUniformsivRowMajorBlock), so the member
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// check suffices; the getUniformBlock() fallback is defensive for a config that instead leaves
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// an inheriting member's layoutMatrix == ElmNone.
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GLint GetActiveUniformIsRowMajor(Uint index) const {
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const auto& uniform = m_program->getUniform(static_cast<Int>(index));
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if (uniform.index < 0) return 0;
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const glslang::TType* type = uniform.getType();
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if (type == nullptr || !type->isMatrix()) return 0;
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glslang::TLayoutMatrix layoutMatrix = type->getQualifier().layoutMatrix;
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if (layoutMatrix == glslang::ElmNone) {
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layoutMatrix = m_program->getUniformBlock(uniform.index).getType()->getQualifier().layoutMatrix;
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}
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return (layoutMatrix == glslang::ElmRowMajor) ? 1 : 0;
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}
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// GL_UNIFORM_MATRIX_STRIDE: byte stride between columns (col-major) / rows (row-major) of a
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// matrix in a named block; 0 for a non-matrix block member; -1 for a default-block uniform.
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// glslang exposes no matrix stride, so it is derived from the std140 rule -- each column/row
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// vector's base alignment rounded up to a vec4 (16 B). MobileGL's SPIR-V path lays every UBO
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// out as std140 (packed/shared are coerced), so this matches the offsets glslang reports. For
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// every GL 3.3 float matrix this evaluates to 16, independent of majorness.
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GLint GetActiveUniformMatrixStride(Uint index) const {
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const auto& uniform = m_program->getUniform(static_cast<Int>(index));
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if (uniform.index < 0) return -1;
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const glslang::TType* type = uniform.getType();
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if (type == nullptr || !type->isMatrix()) return 0;
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glslang::TLayoutMatrix layoutMatrix = type->getQualifier().layoutMatrix;
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if (layoutMatrix == glslang::ElmNone) {
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layoutMatrix = m_program->getUniformBlock(uniform.index).getType()->getQualifier().layoutMatrix;
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}
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const bool rowMajor = (layoutMatrix == glslang::ElmRowMajor);
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const int strideVectorComponents = rowMajor ? type->getMatrixCols() : type->getMatrixRows();
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constexpr int scalarSize = 4; // GL 3.3 core uniform matrices are float
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const int vectorAlignment = (strideVectorComponents <= 1) ? scalarSize
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: (strideVectorComponents == 2) ? 2 * scalarSize
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: 4 * scalarSize;
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return (vectorAlignment + 15) & ~15; // std140 round-up to a vec4
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}
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const glslang::TType* GetUniformTType(Uint location) const {
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auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
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return uniform.getType();
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}
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Bool IsUniformOpaqueAtLocation(Uint location) const { return GetUniformTType(location)->isOpaque(); }
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const String& GetUniformName(Uint location) const {
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auto& uniform = m_program->getUniform(m_uniformIndexInTProgram[location]);
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return uniform.name;
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}
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const String& GetActiveUniformName(Uint index) const {
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auto& uniform = m_program->getUniform(static_cast<Int>(index));
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return uniform.name;
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}
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// Sentinel for a uniform location without global-UBO backing storage (should not
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// survive linking: GenerateBinary falls back to tail-allocated scratch storage).
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static constexpr Uint kInvalidUniformOffset = ~0u;
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Uint GetUniformOffset(Uint location) const { return m_uniformOffsets[location]; }
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Uint GetUniformSizesInBytes(Uint location) const { return MG_Util::GetGLTypeSize(GetUniformType(location)); }
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Int GetAttributeLocation(const String& name) {
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const auto it = std::find(m_attribs.begin(), m_attribs.end(), name);
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return (it == m_attribs.end()) ? -1 : (Int)std::distance(m_attribs.begin(), it);
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}
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Uint32 GetActiveAttributeLocationMask() const {
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Uint32 mask = 0;
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const SizeT count = std::min<SizeT>(m_attribs.size(), 32);
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for (SizeT index = 0; index < count; ++index) {
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if (!m_attribs[index].empty()) {
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mask |= (1u << index);
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}
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}
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return mask;
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}
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Uint32 GetActiveFragmentOutputLocationMask() const {
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if (!m_program) {
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return 0;
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}
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Uint32 mask = 0;
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const Int outputCount = m_program->getNumPipeOutputs();
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for (Int index = 0; index < outputCount; ++index) {
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const Int location = static_cast<Int>(m_program->getPipeOutput(index).layoutLocation());
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if (location >= 0 && location < 32) {
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mask |= (1u << location);
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}
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}
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return mask;
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}
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Int GetActiveFragmentOutputCount() const {
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return m_program ? m_program->getNumPipeOutputs() : 0;
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}
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const String& GetActiveFragmentOutputName(Uint index) const {
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MOBILEGL_ASSERT(m_program != nullptr, "ProgramObject::GetActiveFragmentOutputName: program is null");
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MOBILEGL_ASSERT(index < static_cast<Uint>(m_program->getNumPipeOutputs()),
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"ProgramObject::GetActiveFragmentOutputName: index=%u out of range", index);
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return m_program->getPipeOutput(static_cast<Int>(index)).name;
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}
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Int GetFragmentOutputLocation(Uint index) const {
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MOBILEGL_ASSERT(m_program != nullptr, "ProgramObject::GetFragmentOutputLocation: program is null");
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MOBILEGL_ASSERT(index < static_cast<Uint>(m_program->getNumPipeOutputs()),
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"ProgramObject::GetFragmentOutputLocation: index=%u out of range",
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index);
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return static_cast<Int>(m_program->getPipeOutput(static_cast<Int>(index)).layoutLocation());
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}
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GLint GetActiveFragmentOutputArraySize(Uint index) const {
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MOBILEGL_ASSERT(m_program != nullptr, "ProgramObject::GetActiveFragmentOutputArraySize: program is null");
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MOBILEGL_ASSERT(index < static_cast<Uint>(m_program->getNumPipeOutputs()),
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"ProgramObject::GetActiveFragmentOutputArraySize: index=%u out of range", index);
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return m_program->getPipeOutput(static_cast<Int>(index)).size;
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}
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GLenum GetFragmentOutputType(Uint index) const {
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MOBILEGL_ASSERT(m_program != nullptr, "ProgramObject::GetFragmentOutputType: program is null");
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MOBILEGL_ASSERT(index < static_cast<Uint>(m_program->getNumPipeOutputs()),
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"ProgramObject::GetFragmentOutputType: index=%u out of range",
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index);
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return m_program->getPipeOutput(static_cast<Int>(index)).glDefineType;
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}
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GLenum GetAttribType(Uint index) const { return m_attribTypes[index]; }
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const String& GetAttribName(Uint index) const { return m_attribs[index]; }
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GLenum GetActiveAttribType(Uint index) const { return m_program->getPipeInput(static_cast<Int>(index)).glDefineType; }
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GLint GetActiveAttribArraySize(Uint index) const { return m_program->getPipeInput(static_cast<Int>(index)).size; }
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const String& GetActiveAttribName(Uint index) const { return m_program->getPipeInput(static_cast<Int>(index)).name; }
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void* MapUBO() { return m_globalUboScratch.data(); }
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const void* GetUBOData() const { return m_globalUboScratch.data(); }
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Uint GetUBOSize() const { return static_cast<Uint>(m_globalUboScratch.size()); }
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// Content version of the CPU-side global-UBO shadow: writers bump it so backends
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// can skip re-uploading an unchanged UBO on every draw. ~0u is reserved as the
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// backends' "never uploaded" sentinel, so skip over it on wrap.
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Uint32 GetUBOContentVersion() const { return m_uboContentVersion; }
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void MarkUBOContentDirty() {
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if (++m_uboContentVersion == ~0u) m_uboContentVersion = 0;
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}
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Uint32 GetBackendStateVersion() const { return m_backendStateVersion; }
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// Bumped only by (re)linking — lets backends detect that every piece of
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// link-derived reflection (locations, block order, UBO layout) is stale.
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Uint32 GetLinkVersion() const { return m_linkVersion; }
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// Content-hash memo for backends: avoids re-hashing the generated SPIR-V on every
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// draw. The memo is keyed by (backendStateVersion, flags); ResetLinkArtifacts and
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// the binding setters below invalidate it by bumping m_backendStateVersion.
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Bool GetBackendHashMemo(Uint flags, Uint64& outHash) const {
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if (m_backendHashMemoVersion != m_backendStateVersion) return false;
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for (const auto& slot : m_backendHashMemoSlots) {
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if (slot.valid && slot.flags == flags) {
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outHash = slot.hash;
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return true;
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}
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}
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return false;
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}
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void SetBackendHashMemo(Uint flags, Uint64 hash) const {
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if (m_backendHashMemoVersion != m_backendStateVersion) {
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for (auto& slot : m_backendHashMemoSlots) slot.valid = false;
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m_backendHashMemoVersion = m_backendStateVersion;
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m_backendHashMemoNextSlot = 0;
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}
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for (auto& slot : m_backendHashMemoSlots) {
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if (slot.valid && slot.flags == flags) {
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slot.hash = hash;
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return;
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}
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}
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auto& slot = m_backendHashMemoSlots[m_backendHashMemoNextSlot];
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slot.flags = flags;
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slot.hash = hash;
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slot.valid = true;
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m_backendHashMemoNextSlot = (m_backendHashMemoNextSlot + 1) % kBackendHashMemoSlotCount;
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}
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void SetUniformSamplerOrImageUnitIndex(Uint location, Int unit) {
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if (location >= m_uniformSamplerOrImageUnitIndex.size() ||
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m_uniformSamplerOrImageUnitIndex[location] == unit) {
|
|
return;
|
|
}
|
|
m_uniformSamplerOrImageUnitIndex[location] = unit;
|
|
++m_backendStateVersion;
|
|
}
|
|
|
|
Int GetUniformSamplerOrImageUnitIndex(Uint location) const {
|
|
return m_uniformSamplerOrImageUnitIndex[location];
|
|
}
|
|
|
|
Bool GetDeleteStatus() const { return m_deleteStatus; }
|
|
Bool GetLinkStatus() const { return m_linkStatus; }
|
|
// GL_PROGRAM_BINARY_RETRIEVABLE_HINT. MobileGL exposes no program binary format
|
|
// (GL_NUM_PROGRAM_BINARY_FORMATS is 0), so the hint is pure state - which is all
|
|
// ARB_get_program_binary requires of it.
|
|
Bool GetBinaryRetrievableHint() const { return m_binaryRetrievableHint; }
|
|
void SetBinaryRetrievableHint(Bool hint) { m_binaryRetrievableHint = hint; }
|
|
// glProgramBinary always fails here (there is no format it could accept) and the
|
|
// spec then requires the program's LINK_STATUS to read FALSE.
|
|
void MarkLinkFailedByProgramBinary() {
|
|
ResetLinkArtifacts();
|
|
m_infoLog = "No program binary format is supported.";
|
|
}
|
|
Bool GetValidateStatus() const { return m_validateStatus; }
|
|
Int GetActiveAtomicCounterCount() const { return m_program->getNumAtomicCounters(); }
|
|
Int GetActiveAttributesCount() const { return m_program->getNumPipeInputs(); }
|
|
Int GetActiveUniformBlocksCount() const { return m_program->getNumUniformBlocks(); }
|
|
GLuint GetComputeLocalSize(Uint dim) const { return m_program->getLocalSize(static_cast<Int>(dim)); }
|
|
Int GetActiveAttributesMaxLength() const { return m_attribInNameMaxLength; }
|
|
Int GetActiveUniformBlocksMaxNameLength() const { return m_uniformBlockNameMaxLength; }
|
|
Uint GetUniformBlockIndex(const char* name) const {
|
|
auto it = m_uniformBlockIndexByName.find(name);
|
|
if (it != m_uniformBlockIndexByName.end()) return it->second;
|
|
// Instances of an arrayed block are reflected as "Block[0]".."Block[N-1]";
|
|
// a bare "Block" query resolves to the first instance per GL semantics.
|
|
const String suffixedName = String(name) + "[0]";
|
|
it = m_uniformBlockIndexByName.find(suffixedName);
|
|
if (it != m_uniformBlockIndexByName.end()) return it->second;
|
|
return 0xFFFFFFFFu; // GL_INVALID_INDEX
|
|
}
|
|
Bool IsActiveUniformBlock(Uint index) const {
|
|
if (index >= GetActiveUniformBlocksCount()) return false;
|
|
return true;
|
|
}
|
|
Uint GetUBOSizeAt(Uint index) const {
|
|
if (!IsActiveUniformBlock(index)) return 0;
|
|
// glslang reports the unpadded end offset of the last member, but a std140 block
|
|
// (like a std140 struct) occupies a vec4-rounded size, and that is what the
|
|
// backend compiles: ES drivers reject draws whose bound UBO range is smaller
|
|
// than the block (a block ending in ivec3 reported 12 while the driver needs 16).
|
|
return (m_program->getUniformBlock((Int)index).size + 15u) & ~15u;
|
|
}
|
|
|
|
const String& GetUniformBlockName(Uint index) const {
|
|
auto& ubo = m_program->getUniformBlock((Int)index);
|
|
return ubo.name;
|
|
}
|
|
|
|
// Uniform entries that belong to an arrayed uniform block are reflected once, against
|
|
// the first instance ("Block[0]"); per GL semantics every other instance shares that
|
|
// member set. Maps any instance's block index to the index owning the member entries.
|
|
Uint GetUniformBlockMemberOwnerIndex(Uint index) const {
|
|
const String& name = GetUniformBlockName(index);
|
|
if (name.empty() || name.back() != ']') return index;
|
|
const SizeT bracket = name.rfind('[');
|
|
if (bracket == String::npos) return index;
|
|
const auto it = m_uniformBlockIndexByName.find(name.substr(0, bracket) + "[0]");
|
|
if (it != m_uniformBlockIndexByName.end()) return it->second;
|
|
return index;
|
|
}
|
|
|
|
// GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS: derived from the same active-uniform scan that
|
|
// fills GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, so the two queries always agree
|
|
// (glslang's numMembers counts declared members, which diverges from the reflected
|
|
// entry list for struct arrays and arrayed block instances).
|
|
Int GetUniformBlockActiveUniformCount(Uint index) const {
|
|
const Int ownerIndex = static_cast<Int>(GetUniformBlockMemberOwnerIndex(index));
|
|
Int count = 0;
|
|
for (Uint uniformIndex = 0; uniformIndex < m_activeUniformCount; ++uniformIndex) {
|
|
if (GetActiveUniformBlockIndex(uniformIndex) == ownerIndex) ++count;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
Bool IsUniformBlockReferencedByStage(Uint index, EShLanguage stage) const {
|
|
const auto& ubo = m_program->getUniformBlock((Int)index);
|
|
const auto stageMask = static_cast<EShLanguageMask>(1 << stage);
|
|
return (ubo.stages & stageMask) != 0;
|
|
}
|
|
|
|
// Set by glUniformBlockBinding
|
|
void SetUniformBlockBinding(Uint index, Uint binding) {
|
|
if (index >= m_uniformBlockBinding.size() || m_uniformBlockBinding[index] == static_cast<Int>(binding)) {
|
|
return;
|
|
}
|
|
m_uniformBlockBinding[index] = static_cast<Int>(binding);
|
|
++m_backendStateVersion;
|
|
}
|
|
|
|
Uint GetUniformBlockBinding(Uint index) const { return m_uniformBlockBinding[index]; }
|
|
|
|
Vector<Vector<unsigned>>& GetGeneratedSpirv() { return m_generatedSpirv; }
|
|
const Vector<Vector<unsigned>>& GetGeneratedSpirv() const { return m_generatedSpirv; }
|
|
|
|
Int GetShaderIndexByStage(ShaderStage stage) const {
|
|
auto it = std::find_if(m_shaders.begin(), m_shaders.end(), [stage](const SharedPtr<ShaderObject>& shader) {
|
|
return shader->GetShaderStage() == stage;
|
|
});
|
|
return it == m_shaders.end() ? -1 : (Int)std::distance(m_shaders.begin(), it);
|
|
}
|
|
|
|
// Transform feedback (GL 3.0 core: glTransformFeedbackVaryings applies on
|
|
// the NEXT link; the linked snapshot below is what draws and queries see).
|
|
struct XfbVarying {
|
|
String name;
|
|
GLenum type = GL_FLOAT;
|
|
GLint size = 1; // array element count
|
|
Uint32 bufferIndex = 0; // capture buffer slot
|
|
Uint32 offsetBytes = 0; // offset within the capture buffer
|
|
Uint32 byteSize = 0; // bytes captured per vertex for this varying
|
|
// Offset within the gap-free record a backend that cannot express the GL
|
|
// layout captures into; see NeedsScatteredTransformFeedbackCapture.
|
|
Uint32 packedOffsetBytes = 0;
|
|
};
|
|
void SetTransformFeedbackVaryings(Vector<String>&& names, GLenum bufferMode) {
|
|
m_requestedXfbVaryings = Move(names);
|
|
m_requestedXfbBufferMode = bufferMode;
|
|
}
|
|
GLenum GetTransformFeedbackBufferMode() const { return m_xfbBufferMode; }
|
|
SizeT GetTransformFeedbackVaryingCount() const { return m_xfbVaryings.size(); }
|
|
const XfbVarying* GetTransformFeedbackVarying(SizeT index) const {
|
|
return index < m_xfbVaryings.size() ? &m_xfbVaryings[index] : nullptr;
|
|
}
|
|
const Vector<XfbVarying>& GetTransformFeedbackVaryings() const { return m_xfbVaryings; }
|
|
// Stride of one captured vertex in the given capture buffer slot.
|
|
Uint32 GetTransformFeedbackStride(Uint32 bufferIndex) const {
|
|
return bufferIndex < m_xfbStrides.size() ? m_xfbStrides[bufferIndex] : 0;
|
|
}
|
|
SizeT GetTransformFeedbackBufferCount() const { return m_xfbStrides.size(); }
|
|
Int GetTransformFeedbackVaryingMaxLength() const { return m_xfbVaryingNameMaxLength; }
|
|
// True when the capture layout uses gl_SkipComponents / gl_NextBuffer
|
|
// (ARB_transform_feedback3), which no ES driver can express: it can only pack every
|
|
// captured varying into one record with no gaps. A backend that captures through
|
|
// such a driver has to capture into scratch storage and scatter the records into the
|
|
// application's buffers itself, using packedOffsetBytes as the source offset and
|
|
// (bufferIndex, offsetBytes, stride) as the destination.
|
|
Bool NeedsScatteredTransformFeedbackCapture() const { return m_xfbNeedsScatteredCapture; }
|
|
// Bytes one gap-free captured record occupies.
|
|
Uint32 GetTransformFeedbackPackedStride() const { return m_xfbPackedStride; }
|
|
// True when the capture stage is a triangle-strip geometry shader with a
|
|
// statically-known emit sequence: the Vulkan capture order then needs the GL
|
|
// odd-triangle vertex swap after EndTransformFeedback.
|
|
Bool HasGsTriangleStripCaptureFixup() const { return m_gsStripCaptureFixup; }
|
|
// Triangles per strip, in emission order, for ONE geometry invocation.
|
|
const Vector<Uint32>& GetGsStripTriangles() const { return m_gsStripTriangles; }
|
|
// GL_GEOMETRY_INPUT_TYPE of the linked geometry stage (GL_POINTS, GL_LINES,
|
|
// GL_LINES_ADJACENCY, GL_TRIANGLES or GL_TRIANGLES_ADJACENCY), or GL_NONE when the
|
|
// program has no geometry stage. Draws must present a compatible primitive type.
|
|
GLenum GetGeometryInputType() const { return m_gsInputPrimitive; }
|
|
|
|
Uint GetExternalIndex() const { return m_externalIndex; }
|
|
// Globally-unique, never-reused id for this program object's lifetime. Unlike the GL
|
|
// name (external index), which is freed to a LIFO list and immediately handed back by
|
|
// the next glCreateProgram, this distinguishes a deleted-and-recreated program from the
|
|
// original, so an identity cache can't false-hit on name recycling.
|
|
Uint64 GetLifetimeId() const { return m_lifetimeId; }
|
|
|
|
private:
|
|
void ResetLinkArtifacts();
|
|
void DoReflection();
|
|
// Resolves the requested transform feedback varyings against the linked
|
|
// vertex stage; fails the link (GL semantics) on unknown or duplicate
|
|
// names or exceeded capture limits.
|
|
Bool ResolveTransformFeedbackVaryings();
|
|
void ResolveGsTriangleStripCapture(const glslang::TIntermediate* captureIntermediate);
|
|
void GenerateBinary();
|
|
void WaitUntilGenerationCompleted() const;
|
|
void AddDefaultFragmentShaderIfMissing();
|
|
Bool ValidateFragmentOutputLocations();
|
|
|
|
static Uint64 AllocateLifetimeId();
|
|
|
|
const Uint m_externalIndex = 0;
|
|
const Uint64 m_lifetimeId = 0;
|
|
Vector<SharedPtr<ShaderObject>> m_shaders;
|
|
Vector<SharedPtr<ShaderObject>> m_detachedShaders; // Store detached shaders and remove on next link
|
|
|
|
SharedPtr<glslang::TProgram> m_program;
|
|
|
|
Vector<Vector<unsigned>> m_generatedSpirv;
|
|
|
|
// Attributes (Vertex in)
|
|
UnorderedMap<String, Uint> m_explicitAttribLocations;
|
|
Vector<String> m_attribs;
|
|
Vector<GLenum> m_attribTypes;
|
|
|
|
// FragData (Frag out)
|
|
UnorderedMap<String, Uint> m_explicitFragDataLocation;
|
|
UnorderedMap<String, Uint> m_linkedFragDataLocation;
|
|
// Dual-source blend color index per output name (glBindFragDataLocationIndexed); snapshotted
|
|
// into the linked map at link time, like the location maps above.
|
|
UnorderedMap<String, Uint> m_explicitFragDataIndex;
|
|
UnorderedMap<String, Uint> m_linkedFragDataIndex;
|
|
Int m_maxFragmentOutputColorNumber = 8;
|
|
|
|
// Uniforms
|
|
UnorderedMap<String, Uint> m_uniformLocations;
|
|
// Ordered by location,
|
|
// aka. m_uniformIndexInTProgram[loc] == "uniform index of TProgram at location `loc`"
|
|
Vector<Int> m_uniformIndexInTProgram;
|
|
// ditto. Will be set at glUniform1i
|
|
Vector<Int> m_uniformSamplerOrImageUnitIndex;
|
|
UnorderedMap<String, Uint> m_explicitOpaqueUniformBindings;
|
|
|
|
// Ordered by uniform block index
|
|
// index is DIFFERENT from binding!!!
|
|
//
|
|
// Let's define UniformBlockIndex == the order at glslang getUniformBlock()
|
|
// aka `i = glGetUniformBlockIndex(prog, "BlockName")` implies:
|
|
// `prog->getUniformBlock(i) == "BlockName"`
|
|
// These stuff are present for GL semantics, not for backend inspection
|
|
// These may change after-link (because GL spec decided to have `glUniformBlockBinding`)
|
|
UnorderedMap<String, Uint> m_uniformBlockIndexByName;
|
|
Vector<Int> m_uniformBlockBinding;
|
|
|
|
// Need to be reflected after linking of SPIR-V binary
|
|
Vector<Uint> m_uniformOffsets;
|
|
Vector<Uint> m_uniformSizesInBytes;
|
|
Vector<Uint8> m_globalUboScratch;
|
|
|
|
Uint m_activeUniformCount = 0;
|
|
Uint m_maxUniformLocation = 0;
|
|
Int m_uniformNameMaxLength = 0;
|
|
Int m_attribInNameMaxLength = 0;
|
|
Int m_uniformBlockNameMaxLength = 0;
|
|
|
|
String m_infoLog;
|
|
Bool m_deleteStatus = false;
|
|
Bool m_linkStatus = false;
|
|
Bool m_binaryRetrievableHint = false;
|
|
Bool m_validateStatus = true;
|
|
Uint32 m_backendStateVersion = 0;
|
|
|
|
// Backend-owned content-hash memo (see GetBackendHashMemo): valid only while
|
|
// m_backendStateVersion matches. Several slots, not one: a backend may resolve the same
|
|
// program under more than one compile-flag set within a frame (surface rotation, and the
|
|
// explicit-LOD sampling variant), and a single slot would then miss on every lookup and
|
|
// re-hash the program's whole SPIR-V once per draw.
|
|
static constexpr SizeT kBackendHashMemoSlotCount = 4;
|
|
struct BackendHashMemoSlot {
|
|
Uint64 hash = 0;
|
|
Uint flags = 0;
|
|
Bool valid = false;
|
|
};
|
|
mutable Array<BackendHashMemoSlot, kBackendHashMemoSlotCount> m_backendHashMemoSlots{};
|
|
mutable SizeT m_backendHashMemoNextSlot = 0;
|
|
mutable Uint32 m_backendHashMemoVersion = ~0u;
|
|
Uint32 m_uboContentVersion = 0;
|
|
Uint32 m_linkVersion = 0;
|
|
|
|
// Transform feedback: request (applies at next link) and linked snapshot.
|
|
Vector<String> m_requestedXfbVaryings;
|
|
GLenum m_requestedXfbBufferMode = GL_INTERLEAVED_ATTRIBS;
|
|
Vector<XfbVarying> m_xfbVaryings;
|
|
Vector<Uint32> m_xfbStrides;
|
|
Vector<Uint32> m_gsStripTriangles;
|
|
Bool m_gsStripCaptureFixup = false;
|
|
GLenum m_gsInputPrimitive = GL_NONE;
|
|
GLenum m_xfbBufferMode = GL_INTERLEAVED_ATTRIBS;
|
|
Int m_xfbVaryingNameMaxLength = 0;
|
|
Bool m_xfbNeedsScatteredCapture = false;
|
|
Uint32 m_xfbPackedStride = 0;
|
|
};
|
|
} // namespace MobileGL::MG_State::GLState
|