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[Fix, Test] (MG_Impl, MG_State): negative-path GL errors for multi_bind, indirect_parameters, texture_storage, compute dispatch/link and buffer-range alignment; indexed getters answer the full pname table

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This commit is contained in:
swung0x48
2026-08-11 09:02:22 -04:00
parent d83b4dbbb5
commit 7b593e39ef
9 changed files with 547 additions and 16 deletions
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MobileGL/MG_Impl/GLImpl/Buffer/GL_Buffer.cpp
+38 -8
View File
@@ -1491,8 +1491,8 @@ namespace MobileGL::MG_Impl::GLImpl {
// offset and size, which is also how glBindBuffersRange spells "reset this element"
// (a NULL buffers array, or a zero entry inside one).
static Bool ValidateBufferRangeOffsetAndSize(GLenum target, GLintptr offset, GLsizeiptr size,
const char* funcName) {
if (size <= 0) {
const char* funcName, Bool hasBuffer = true) {
if (hasBuffer && size <= 0) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
@@ -1528,15 +1528,18 @@ namespace MobileGL::MG_Impl::GLImpl {
}
}
// A transform feedback capture binding is addressed in 32-bit components, so BOTH the
// offset and the size must be multiples of 4.
if (target == GL_TRANSFORM_FEEDBACK_BUFFER && ((offset % 4) != 0 || (size % 4) != 0)) {
// offset and the size must be multiples of 4. An atomic counter binding is addressed in
// 32-bit counters and constrains its offset the same way (GL 4.6 core 6.1.1) - that one
// has no queryable alignment pname, which is why it was missing here.
const Bool isFourByteAddressed =
target == GL_TRANSFORM_FEEDBACK_BUFFER || target == GL_ATOMIC_COUNTER_BUFFER;
if (isFourByteAddressed && ((offset % 4) != 0 || (hasBuffer && (size % 4) != 0))) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>(
"MG_Impl/GLImpl", funcName,
std::format("offset ({}) and size ({}) must both be multiples of 4 for "
"GL_TRANSFORM_FEEDBACK_BUFFER.",
offset, size)));
std::format("offset ({}) and size ({}) must both be multiples of 4 for {}.", offset, size,
MG_Util::ConvertGLEnumToString(target))));
return false;
}
return true;
@@ -1548,7 +1551,12 @@ namespace MobileGL::MG_Impl::GLImpl {
BufferTarget bufferTarget = MG_Util::ConvertGLEnumToBufferTarget(target);
if (!BufferImpl::ValidateBufferBindingPointTarget(bufferTarget)) return;
if (!BufferImpl::ValidateBufferBindingPointIndex(bufferTarget, index)) return;
if (buffer != 0 && !ValidateBufferRangeOffsetAndSize(target, offset, size, __func__)) return;
// The target's alignment rules are a property of the BINDING POINT, not of the buffer,
// so they apply even when buffer is zero - which is exactly how
// KHR-GL43.shader_storage_buffer_object.negative-api-bind probes the SSBO alignment
// (glBindBufferRange(SHADER_STORAGE_BUFFER, 0, 0, alignment - 1, 0)). Only the size
// rules need a buffer, since buffer 0 detaches the binding point and ignores size.
if (!ValidateBufferRangeOffsetAndSize(target, offset, size, __func__, /*hasBuffer: */ buffer != 0)) return;
if (bufferTarget == BufferTarget::TransformFeedback && MG_State::pGLContext->IsTransformFeedbackActive()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
@@ -1732,8 +1740,29 @@ namespace MobileGL::MG_Impl::GLImpl {
return BufferImpl::ValidateBufferBindingPointRange(bufferTarget, first, count, funcName);
}
// ARB_multi_bind states the equivalence to a loop of single binds "except that ... buffers
// will not be created if they do not exist": glBindBuffer instantiates a name glGenBuffers
// merely reserved, glBindBuffers* must refuse it instead. That is INVALID_OPERATION, and it
// is an all-or-nothing check - one bad name leaves every binding point in the range alone
// (KHR-GL44.multi_bind.errors_bind_buffers).
static Bool ValidateMultiBindBufferNames(const GLuint* buffers, GLsizei count, const char* funcName) {
if (buffers == nullptr) return true;
for (GLsizei i = 0; i < count; ++i) {
if (buffers[i] == 0) continue;
if (MG_State::pGLContext->ValidateBufferObject(buffers[i])) continue;
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>(
"MG_Impl/GLImpl", funcName,
std::format("buffers[{}] ({}) is not the name of an existing buffer object.", i, buffers[i])));
return false;
}
return true;
}
void BindBuffersBase(GLenum target, GLuint first, GLsizei count, const GLuint* buffers) {
if (!ValidateMultiBindBufferRange(target, first, count, __func__)) return;
if (!ValidateMultiBindBufferNames(buffers, count, __func__)) return;
for (GLsizei i = 0; i < count; ++i) {
BindBufferBase_State(target, first + i, buffers ? buffers[i] : 0);
}
@@ -1748,6 +1777,7 @@ namespace MobileGL::MG_Impl::GLImpl {
void BindBuffersRange(GLenum target, GLuint first, GLsizei count, const GLuint* buffers, const GLintptr* offsets,
const GLsizeiptr* sizes) {
if (!ValidateMultiBindBufferRange(target, first, count, __func__)) return;
if (!ValidateMultiBindBufferNames(buffers, count, __func__)) return;
for (GLsizei i = 0; i < count; ++i) {
if (!buffers || buffers[i] == 0) {
BindBufferBase_State(target, first + i, 0);
MobileGL/MG_Impl/GLImpl/Drawing/GL_Drawing.cpp
+79
View File
@@ -520,6 +520,20 @@ namespace MobileGL::MG_Impl::GLImpl {
"No buffer is bound to GL_DISPATCH_INDIRECT_BUFFER."));
return;
}
// ...and the same INVALID_OPERATION covers "the command would source data beyond the end
// of the bound buffer object" (GL 4.6 core 19): the dispatch reads three uints starting
// at `indirect`.
constexpr SizeT kDispatchIndirectCommandSize = 3 * sizeof(Uint32);
if (static_cast<SizeT>(indirect) + kDispatchIndirectCommandSize > indirectBuffer->GetSize()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>(
"MG_Impl/GLImpl", __func__,
std::format("indirect ({}) + 12 bytes runs past the end of the {}-byte buffer bound to "
"GL_DISPATCH_INDIRECT_BUFFER.",
indirect, indirectBuffer->GetSize())));
return;
}
dispatchComputeIndirect(indirect);
}
@@ -580,6 +594,61 @@ namespace MobileGL::MG_Impl::GLImpl {
MultiDrawArraysIndirect_Backend(mode, indirect, drawcount, stride);
}
// ARB_indirect_parameters / GL 4.6 core 10.4: `drawcount` is a byte offset into the buffer
// bound to PARAMETER_BUFFER and holds one uint draw count. Three errors have to be raised
// before the call reaches a backend, and none of them was
// (KHR-GL46.indirect_parameters_tests.MultiDraw{Arrays,Elements}IndirectCount):
// * drawcount not a multiple of four INVALID_VALUE
// * nothing bound to PARAMETER_BUFFER, or the uint at `drawcount`
// lies past its end INVALID_OPERATION
// * maxdrawcount commands from `indirect` run past the end of the
// buffer bound to DRAW_INDIRECT_BUFFER INVALID_OPERATION
static Bool ValidateIndirectCountDraw(GLintptr indirect, GLintptr drawcount, GLsizei maxdrawcount,
GLsizei stride, SizeT commandSize, const char* funcName) {
if (drawcount < 0 || (drawcount % 4) != 0) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
"drawcount must be non-negative and a multiple of four."));
return false;
}
const auto& parameterBuffer =
MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::Parameter).GetBoundObject();
if (!parameterBuffer ||
static_cast<SizeT>(drawcount) + sizeof(Uint32) > parameterBuffer->GetSize()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
"No buffer is bound to GL_PARAMETER_BUFFER, or drawcount runs past "
"the end of the one that is."));
return false;
}
if (maxdrawcount < 0 || stride < 0 || indirect < 0) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
"indirect, maxdrawcount and stride must all be non-negative."));
return false;
}
const SizeT effectiveStride = stride != 0 ? static_cast<SizeT>(stride) : commandSize;
const auto& indirectBuffer =
MG_State::pGLContext->GetBufferBindingSlot(BufferTarget::DrawIndirect).GetBoundObject();
// A zero maxdrawcount sources nothing, so it cannot run past anything.
const SizeT requiredBytes =
maxdrawcount == 0 ? 0
: static_cast<SizeT>(indirect) +
static_cast<SizeT>(maxdrawcount - 1) * effectiveStride + commandSize;
if (!indirectBuffer || requiredBytes > indirectBuffer->GetSize()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", funcName,
"maxdrawcount commands would be sourced from beyond the end of the "
"buffer bound to GL_DRAW_INDIRECT_BUFFER."));
return false;
}
return true;
}
void MultiDrawElementsIndirectCount(GLenum mode, GLenum type, const void* indirect, GLintptr drawcount,
GLsizei maxdrawcount, GLsizei stride) {
auto multiDrawElementsIndirectCount = MG_Backend::gBackendFunctionsTable.GL.MultiDrawElementsIndirectCount;
@@ -590,6 +659,11 @@ namespace MobileGL::MG_Impl::GLImpl {
"Backend does not support indirect-parameter indexed draws."));
return;
}
// DrawElementsIndirectCommand: count, instanceCount, firstIndex, baseVertex, baseInstance.
if (!ValidateIndirectCountDraw(reinterpret_cast<GLintptr>(indirect), drawcount, maxdrawcount, stride,
5 * sizeof(Uint32), __func__)) {
return;
}
MultiDrawElementsIndirectCount_Backend(mode, type, indirect, drawcount, maxdrawcount, stride);
}
@@ -603,6 +677,11 @@ namespace MobileGL::MG_Impl::GLImpl {
"Backend does not support indirect-parameter array draws."));
return;
}
// DrawArraysIndirectCommand: count, instanceCount, first, baseInstance.
if (!ValidateIndirectCountDraw(reinterpret_cast<GLintptr>(indirect), drawcount, maxdrawcount, stride,
4 * sizeof(Uint32), __func__)) {
return;
}
MultiDrawArraysIndirectCount_Backend(mode, indirect, drawcount, maxdrawcount, stride);
}
MobileGL/MG_Impl/GLImpl/Getter/GL_Getter.cpp
+22 -7
View File
@@ -961,15 +961,30 @@ namespace MobileGL::MG_Impl::GLImpl {
}
}
auto getInteger64i = MG_Backend::gBackendFunctionsTable.GL.GetInteger64i_v;
if (!getInteger64i) {
*data = 0;
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__, "Backend does not support indexed integer queries."));
// The one indexed pname whose value genuinely needs 64 bits: a vertex buffer binding
// offset is an intptr, so taking the 32-bit route below would truncate it.
if (target == GL_VERTEX_BINDING_OFFSET) {
if (index >= VertexArrayImpl::GetMaxVertexAttribBindings()) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidValue,
MakeUnique<GenericErrorInfo>("MG_Impl/GLImpl", __func__,
"Vertex buffer binding index is out of range."));
return;
}
const auto& vao = MG_State::pGLContext->GetBoundVertexArray();
*data = vao ? static_cast<GLint64>(vao->GetBindingPoint(index).Offset) : 0;
return;
}
getInteger64i(target, index, data);
// Everything else is 32-bit indexed state that the glGetIntegeri_v pname table already
// owns, and GL 4.6 core 22.1 says every indexed query answers every indexed pname.
// Handing the leftovers straight to the backend instead made glGetInteger64i_v disagree
// with glGetIntegeri_v on the very same pname - GL_MAX_COMPUTE_WORK_GROUP_COUNT read
// back 0 while the 32-bit view said 65535 (KHR-GL43.compute_shader.max), because a
// frontend-only value simply is not in the driver's table.
GLint values[4] = {};
GetIntegeri_v(target, index, values);
*data = static_cast<GLint64>(values[0]);
}
void GetInteger64v(GLenum pname, GLint64* params) {
MobileGL/MG_Impl/GLImpl/RenderState/GL_RenderState.cpp
+13 -1
View File
@@ -8,6 +8,7 @@
#include "GL_RenderState.h"
#include <cmath>
#include <MG_Impl/GLImpl/Getter/GL_Getter.h>
#include <MG_State/GLState/Core.h>
#include <MG_Util/Converters/GLToStr/GLEnumConverter.h>
#include <MG_Util/Converters/GLToMG/RenderStateEnumConverter.h>
@@ -380,7 +381,18 @@ namespace MobileGL::MG_Impl::GLImpl {
return;
}
*data = IsEnabledi_State(target, index);
// GL 4.6 core 22.1: glGetBooleani_v answers EVERY indexed state, not just the indexed
// capabilities - a non-boolean value simply reads back as "is it non-zero". Routing the
// non-capability enums to the pname table glGetIntegeri_v already owns is what makes
// that true; without it a query like glGetBooleani_v(GL_MAX_COMPUTE_WORK_GROUP_COUNT, 0)
// came back GL_INVALID_ENUM (KHR-GL43.compute_shader.max).
if (MG_Util::ConvertGLEnumToCapabilityInput(target) != CapabilityInput::Unknown) {
*data = IsEnabledi_State(target, index);
return;
}
GLint values[4] = {};
GetIntegeri_v(target, index, values);
*data = values[0] != 0 ? GL_TRUE : GL_FALSE;
}
GLboolean IsEnabled_State(GLenum cap) {
MobileGL/MG_Impl/GLImpl/Sampler/GL_Sampler.cpp
+19
View File
@@ -336,6 +336,25 @@ namespace MobileGL::MG_Impl::GLImpl {
return;
}
// ...and the names are checked up front for the same reason, with the extra rule that
// ARB_multi_bind spells out separately: "samplers will not be created if they do not
// exist". The single-bind path instantiates a name glGenSamplers merely reserved; here
// a name that is not an existing sampler OBJECT is INVALID_OPERATION and nothing binds
// (KHR-GL44.multi_bind.errors_bind_samplers).
if (samplers != nullptr) {
for (GLsizei i = 0; i < count; ++i) {
if (samplers[i] == 0) continue;
if (MG_State::pGLContext->ValidateSamplerObject(samplers[i])) continue;
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>(
"MG_Impl/GLImpl", "BindSamplers",
std::format("samplers[{}] ({}) is not the name of an existing sampler object.", i,
samplers[i])));
return;
}
}
for (GLsizei i = 0; i < count; ++i) {
BindSampler_State(first + i, samplers ? samplers[i] : 0);
}
MobileGL/MG_Impl/GLImpl/Texture/GL_Texture.cpp
+36
View File
@@ -4110,10 +4110,46 @@ namespace MobileGL::MG_Impl::GLImpl {
textureObject->SetImmutableLevels(static_cast<Uint>(levels));
}
// No block-compressed format is defined for a three-dimensional image, so glTexStorage3D on
// TEXTURE_3D must reject one - and with INVALID_OPERATION, not the INVALID_ENUM an unknown
// sized format gets (GL 4.6 core 8.19 / Khronos bug 11239, KHR-GLxx.texture_storage
// .compressed_data). Written against the enum ranges rather than a name list because the
// families are contiguous and MobileGL's own internal-format enum drops the ones it cannot
// carry, which would make this check silently narrower than the API surface.
static Bool IsCompressedGLInternalFormat(GLenum internalformat) {
switch (internalformat) {
case 0x8225: // GL_COMPRESSED_RED
case 0x8226: // GL_COMPRESSED_RG
case 0x84ED: // GL_COMPRESSED_RGB
case 0x84EE: // GL_COMPRESSED_RGBA
case 0x8C48: // GL_COMPRESSED_SRGB
case 0x8C49: // GL_COMPRESSED_SRGB_ALPHA
return true;
default:
break;
}
return (internalformat >= 0x83F0 && internalformat <= 0x83F3) || // S3TC / DXT
(internalformat >= 0x8DBB && internalformat <= 0x8DBE) || // RGTC
(internalformat >= 0x8E8C && internalformat <= 0x8E8F) || // BPTC
(internalformat >= 0x9270 && internalformat <= 0x9279) || // ETC2 / EAC
(internalformat >= 0x93B0 && internalformat <= 0x93BD) || // ASTC LDR
(internalformat >= 0x93D0 && internalformat <= 0x93DD); // ASTC sRGB
}
void TextureStorage3D(GLuint texture, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height,
GLsizei depth) {
auto textureObject = GetTextureObjectByName(texture, __func__);
if (!textureObject) return;
if (textureObject->GetTarget() == TextureTarget::Texture3D &&
IsCompressedGLInternalFormat(internalformat)) {
MG_State::pGLContext->RecordError(
ErrorCode::InvalidOperation,
MakeUnique<GenericErrorInfo>(
"MG_Impl/GLImpl", __func__,
std::format("{} is a compressed internal format and cannot back GL_TEXTURE_3D storage.",
MG_Util::ConvertGLEnumToString(internalformat))));
return;
}
TextureInternalFormat textureInternalFormat = MG_Util::ConvertGLEnumToTextureInternalFormat(internalformat);
if (!ValidateTextureStorageInternalFormat(textureInternalFormat, __func__)) return;
if (!ValidateTextureStorageShape(textureObject, 3, levels, width, height, depth, __func__)) return;
MobileGL/MG_State/GLState/ProgramState/ProgramLinkTask.cpp
+17
View File
@@ -446,6 +446,23 @@ namespace MobileGL::MG_State::GLState {
Bool ProgramLinkTask::ConsumeShaders(Vector<SharedPtr<glslang::TShader>>& outShaders) {
outShaders.assign(in.shaders.size(), nullptr);
// GL 4.6 core 7.3: a compute shader may only be linked with other compute shaders -
// the compute pipeline has no other stages to link against, so a program that mixes
// them must fail to link (KHR-GL43.compute_shader.api-program).
{
Bool hasCompute = false;
Bool hasNonCompute = false;
for (const LinkShaderInput& input : in.shaders) {
(input.stage == ShaderStage::Compute ? hasCompute : hasNonCompute) = true;
}
if (hasCompute && hasNonCompute) {
artifacts.infoLog =
"A compute shader cannot be linked with shaders of any other stage.";
DeferLog(std::format("ProgramObject {}: Link failed - {}", in.externalIndex, artifacts.infoLog));
return false;
}
}
for (SizeT i = 0; i < in.shaders.size(); i++) {
const LinkShaderInput& input = in.shaders[i];
const GLenum shaderType = MG_Util::ConvertShaderStageToGLEnum(input.stage);
MobileGL/MG_Test/State/CMakeLists.txt
+25
View File
@@ -50,3 +50,28 @@ if (MSVC)
endif()
gtest_discover_tests(RenderStateTest DISCOVERY_TIMEOUT 30 PROPERTIES LABELS unit)
add_executable(
NegativeApiErrorsTest
NegativeApiErrorsTest.cpp
)
target_include_directories(NegativeApiErrorsTest PRIVATE
${MGL_ROOT}/include
${MGL_ROOT}/MobileGL
${MGL_ROOT}/3rdparty/xxHash
${MGL_ROOT}/3rdparty/Vulkan-Headers/include
${MGL_ROOT}/3rdparty/SPIRV-Reflect
)
target_link_libraries(
NegativeApiErrorsTest PRIVATE
GTest::gtest_main
${LINK_LIBRARIES}
)
if (MSVC)
target_compile_options(NegativeApiErrorsTest PRIVATE /Zc:preprocessor)
endif()
gtest_discover_tests(NegativeApiErrorsTest DISCOVERY_TIMEOUT 30 PROPERTIES LABELS unit)
MobileGL/MG_Test/State/NegativeApiErrorsTest.cpp
+298
View File
@@ -0,0 +1,298 @@
// MobileGL - MobileGL/MG_Test/State/NegativeApiErrorsTest.cpp
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
// The negative-path GL errors the conformance suite checks and MobileGL used to answer
// GL_NO_ERROR to. Every row here is a call the spec requires to fail, lifted from the CTS case
// that found it:
// * KHR-GL44.multi_bind.errors_bind_buffers / .errors_bind_samplers - ARB_multi_bind's
// "buffers/samplers will not be created if they do not exist" rule, plus the atomic-counter
// offset alignment the single-bind path never had.
// * KHR-GL43.shader_storage_buffer_object.negative-api-bind - the SSBO offset alignment is a
// property of the binding point and applies with buffer 0 too.
// * KHR-GL46.indirect_parameters_tests.MultiDraw{Arrays,Elements}IndirectCount - the three
// errors that guard a parameter-buffer draw.
// * KHR-GL43.compute_shader.api-indirect / .api-program.
// * KHR-GLxx.texture_storage.compressed_data - compressed formats on TEXTURE_3D.
// Plus the indexed-getter parity RC-7b is about: glGetBooleani_v / glGetInteger64i_v /
// glGetFloati_v / glGetDoublei_v must answer every pname glGetIntegeri_v answers.
//
// GPU-free: all of it is frontend validation.
#include <gtest/gtest.h>
#include <functional>
#include <string>
#include <vector>
#include "Includes.h"
#include "Init.h"
#include <MG_Impl/GLImpl/Buffer/GL_Buffer.h>
#include <MG_Impl/GLImpl/Drawing/GL_Drawing.h>
#include <MG_Impl/GLImpl/Getter/GL_Getter.h>
#include <MG_Impl/GLImpl/Program/GL_Program.h>
#include <MG_Impl/GLImpl/RenderState/GL_RenderState.h>
#include <MG_Impl/GLImpl/Sampler/GL_Sampler.h>
#include <MG_Impl/GLImpl/Texture/GL_Texture.h>
#include <MG_State/GLState/Core.h>
using namespace MobileGL;
using namespace MobileGL::MG_Impl::GLImpl;
namespace {
class NegativeApiErrorsTest : public ::testing::Test {
protected:
void SetUp() override {
MobileGL::Initialize();
MG_State::pGLContext = MakeUnique<MG_State::GLState::GLContext>();
}
void TearDown() override {
EXPECT_EQ(GetError(), GL_NO_ERROR) << "test left an unconsumed GL error behind";
}
static void DrainErrors() {
for (int i = 0; i < 16 && GetError() != GL_NO_ERROR; ++i) {
}
}
static GLuint MakeBuffer(GLenum target, GLsizeiptr size) {
GLuint buffer = 0;
GenBuffers(1, &buffer);
BindBuffer(target, buffer);
BufferData(target, size, nullptr, GL_STATIC_DRAW);
return buffer;
}
// One table row: run the call, assert exactly the expected error, leave nothing pending.
struct Row {
const char* what;
std::function<void()> call;
GLenum expected;
};
static void RunRows(const std::vector<Row>& rows) {
for (const Row& row : rows) {
DrainErrors();
row.call();
EXPECT_EQ(GetError(), row.expected) << row.what;
DrainErrors();
}
}
};
TEST_F(NegativeApiErrorsTest, MultiBindRejectsNamesThatAreNotObjectsYet) {
const GLuint buffer = MakeBuffer(GL_UNIFORM_BUFFER, 1024);
// Reserved by glGenBuffers but never turned into an object: legal for glBindBuffer,
// which creates it, and illegal for glBindBuffersBase, which must not.
GLuint reservedOnly = 0;
GenBuffers(1, &reservedOnly);
ASSERT_NE(reservedOnly, 0u);
ASSERT_EQ(IsBuffer(reservedOnly), GL_FALSE);
GLuint samplerReservedOnly = 0;
GenSamplers(1, &samplerReservedOnly);
DrainErrors();
const GLuint mixedBuffers[2] = {buffer, reservedOnly};
const GLuint samplers[1] = {samplerReservedOnly};
const GLintptr offsets[2] = {0, 0};
const GLsizeiptr sizes[2] = {256, 256};
RunRows({
{"glBindBuffersBase with a reserved-but-uncreated name",
[&] { BindBuffersBase(GL_UNIFORM_BUFFER, 0, 2, mixedBuffers); }, GL_INVALID_OPERATION},
{"glBindBuffersRange with a reserved-but-uncreated name",
[&] { BindBuffersRange(GL_UNIFORM_BUFFER, 0, 2, mixedBuffers, offsets, sizes); },
GL_INVALID_OPERATION},
{"glBindSamplers with a reserved-but-uncreated name", [&] { BindSamplers(0, 1, samplers); },
GL_INVALID_OPERATION},
});
// The rejected call must have bound nothing at all.
GLint bound = -1;
GetIntegeri_v(GL_UNIFORM_BUFFER_BINDING, 0, &bound);
EXPECT_EQ(bound, 0);
DrainErrors();
}
TEST_F(NegativeApiErrorsTest, BufferRangeOffsetAlignmentAppliesToTheBindingPoint) {
GLint ssboAlignment = 0;
GetIntegerv(GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT, &ssboAlignment);
ASSERT_GT(ssboAlignment, 1) << "the alignment rule is untestable at alignment 1";
const GLuint atomicBuffer = MakeBuffer(GL_ATOMIC_COUNTER_BUFFER, 1024);
DrainErrors();
RunRows({
// buffer 0 detaches the binding point, but the target's alignment rule still holds.
{"glBindBufferRange(SHADER_STORAGE_BUFFER, buffer 0, misaligned offset)",
[&] { BindBufferRange(GL_SHADER_STORAGE_BUFFER, 0, 0, ssboAlignment - 1, 0); }, GL_INVALID_VALUE},
// An atomic counter binding is addressed in 32-bit counters; it has no queryable
// alignment pname, which is how its rule went missing.
{"glBindBufferRange(ATOMIC_COUNTER_BUFFER, offset 3)",
[&] { BindBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, atomicBuffer, 3, 16); }, GL_INVALID_VALUE},
{"glBindBufferRange(ATOMIC_COUNTER_BUFFER, size 15)",
[&] { BindBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, atomicBuffer, 4, 15); }, GL_INVALID_VALUE},
});
// ...and the aligned form still works.
DrainErrors();
BindBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, atomicBuffer, 4, 16);
EXPECT_EQ(GetError(), GL_NO_ERROR);
}
TEST_F(NegativeApiErrorsTest, DispatchComputeIndirectChecksTheBoundBufferExtent) {
// Six uints: an indirect dispatch reads three, so offset 16 runs off the end.
const GLuint dispatchBuffer = MakeBuffer(GL_DISPATCH_INDIRECT_BUFFER, 6 * sizeof(GLuint));
DrainErrors();
RunRows({
{"glDispatchComputeIndirect(-2)", [] { DispatchComputeIndirect(-2); }, GL_INVALID_VALUE},
{"glDispatchComputeIndirect(3)", [] { DispatchComputeIndirect(3); }, GL_INVALID_VALUE},
{"glDispatchComputeIndirect(16) past the end of a 24-byte buffer",
[] { DispatchComputeIndirect(16); }, GL_INVALID_OPERATION},
{"glDispatchComputeIndirect(0) with nothing bound",
[&] {
BindBuffer(GL_DISPATCH_INDIRECT_BUFFER, 0);
DispatchComputeIndirect(0);
},
GL_INVALID_OPERATION},
});
static_cast<void>(dispatchBuffer);
}
TEST_F(NegativeApiErrorsTest, IndirectParameterDrawsCheckBothBuffers) {
// Two DrawArraysIndirectCommands (16 bytes each) and a roomy parameter buffer.
MakeBuffer(GL_DRAW_INDIRECT_BUFFER, 2 * 4 * sizeof(GLuint));
const GLuint parameterBuffer = MakeBuffer(GL_PARAMETER_BUFFER, 200);
DrainErrors();
RunRows({
{"glMultiDrawArraysIndirectCount with drawcount 2 (not a multiple of four)",
[] { MultiDrawArraysIndirectCount(GL_TRIANGLE_STRIP, nullptr, 2, 1, 0); }, GL_INVALID_VALUE},
{"glMultiDrawArraysIndirectCount with maxdrawcount past the indirect buffer",
[] { MultiDrawArraysIndirectCount(GL_TRIANGLE_STRIP, nullptr, 0, 4, 0); }, GL_INVALID_OPERATION},
{"glMultiDrawElementsIndirectCount with drawcount 2",
[] { MultiDrawElementsIndirectCount(GL_TRIANGLE_STRIP, GL_UNSIGNED_BYTE, nullptr, 2, 1, 0); },
GL_INVALID_VALUE},
{"glMultiDrawArraysIndirectCount with no parameter buffer bound",
[&] {
BindBuffer(GL_PARAMETER_BUFFER, 0);
MultiDrawArraysIndirectCount(GL_TRIANGLE_STRIP, nullptr, 0, 2, 0);
},
GL_INVALID_OPERATION},
});
static_cast<void>(parameterBuffer);
}
TEST_F(NegativeApiErrorsTest, TexStorage3DRejectsCompressedFormatsOnTexture3D) {
GLuint texture = 0;
GenTextures(1, &texture);
BindTexture(GL_TEXTURE_3D, texture);
DrainErrors();
RunRows({
{"glTexStorage3D(TEXTURE_3D, GL_COMPRESSED_RED_RGTC1)",
[] { TexStorage3D(GL_TEXTURE_3D, 1, 0x8DBB /* GL_COMPRESSED_RED_RGTC1 */, 8, 8, 8); },
GL_INVALID_OPERATION},
{"glTexStorage3D(TEXTURE_3D, GL_COMPRESSED_RG_RGTC2)",
[] { TexStorage3D(GL_TEXTURE_3D, 1, 0x8DBD /* GL_COMPRESSED_RG_RGTC2 */, 8, 8, 8); },
GL_INVALID_OPERATION},
});
// An uncompressed sized format on the same target still allocates.
DrainErrors();
TexStorage3D(GL_TEXTURE_3D, 1, GL_RGBA8, 8, 8, 8);
EXPECT_EQ(GetError(), GL_NO_ERROR);
}
TEST_F(NegativeApiErrorsTest, LinkRejectsAComputeAndNonComputeMix) {
const auto attach = [](GLuint program, GLenum stage, const char* source) {
const GLuint shader = CreateShader(stage);
ShaderSource(shader, 1, &source, nullptr);
CompileShader(shader);
AttachShader(program, shader);
};
const GLuint program = CreateProgram();
attach(program, GL_COMPUTE_SHADER, R"(#version 430 core
layout(local_size_x = 1) in;
layout(std430) buffer Output { uint g_output[]; };
void main() { g_output[gl_GlobalInvocationID.x] = 0; }
)");
attach(program, GL_VERTEX_SHADER, R"(#version 430 core
layout(location = 0) in vec4 g_position;
void main() { gl_Position = g_position; }
)");
attach(program, GL_FRAGMENT_SHADER, R"(#version 430 core
layout(location = 0) out vec4 g_color;
void main() { g_color = vec4(1); }
)");
LinkProgram(program);
GLint status = GL_TRUE;
GetProgramiv(program, GL_LINK_STATUS, &status);
EXPECT_EQ(status, GL_FALSE) << "a compute shader must not link with any other stage";
DrainErrors();
}
// RC-7b: the four non-int indexed getters have to answer the same pname table glGetIntegeri_v
// does. glGetBooleani_v used to route everything through the indexed-capability path
// (GL_INVALID_ENUM for anything else) and glGetInteger64i_v straight to the driver, which
// does not have MobileGL's frontend-only values at all.
TEST_F(NegativeApiErrorsTest, IndexedGettersAgreeWithGetIntegeriv) {
DrainErrors();
const GLenum pnames[] = {GL_MAX_COMPUTE_WORK_GROUP_COUNT, GL_MAX_COMPUTE_WORK_GROUP_SIZE};
for (GLenum pname : pnames) {
for (GLuint index = 0; index < 3; ++index) {
GLint reference = -1;
GetIntegeri_v(pname, index, &reference);
ASSERT_EQ(GetError(), GL_NO_ERROR) << "glGetIntegeri_v(" << pname << ", " << index << ")";
ASSERT_GT(reference, 0) << "the reference value has to be non-trivial to compare against";
GLint64 as64 = -1;
GetInteger64i_v(pname, index, &as64);
EXPECT_EQ(as64, static_cast<GLint64>(reference)) << "glGetInteger64i_v(" << pname << ")";
EXPECT_EQ(GetError(), GL_NO_ERROR);
GLfloat asFloat = -1.0f;
GetFloati_v(pname, index, &asFloat);
EXPECT_FLOAT_EQ(asFloat, static_cast<GLfloat>(reference)) << "glGetFloati_v(" << pname << ")";
EXPECT_EQ(GetError(), GL_NO_ERROR);
GLdouble asDouble = -1.0;
GetDoublei_v(pname, index, &asDouble);
EXPECT_DOUBLE_EQ(asDouble, static_cast<GLdouble>(reference)) << "glGetDoublei_v(" << pname << ")";
EXPECT_EQ(GetError(), GL_NO_ERROR);
GLboolean asBool = GL_FALSE;
GetBooleani_v(pname, index, &asBool);
EXPECT_EQ(asBool, GL_TRUE) << "glGetBooleani_v(" << pname << ")";
EXPECT_EQ(GetError(), GL_NO_ERROR);
}
}
}
// ...and the vertex-binding offset keeps its 64-bit width through glGetInteger64i_v, which is
// how KHR-GL4x.vertex_attrib_binding reads it.
TEST_F(NegativeApiErrorsTest, VertexBindingOffsetIsReadableThroughTheSixtyFourBitGetter) {
GLuint vao = 0;
GenVertexArrays(1, &vao);
BindVertexArray(vao);
const GLuint vbo = MakeBuffer(GL_ARRAY_BUFFER, 4096);
DrainErrors();
GLint64 offset = -1;
GetInteger64i_v(GL_VERTEX_BINDING_OFFSET, 0, &offset);
EXPECT_EQ(offset, 0);
EXPECT_EQ(GetError(), GL_NO_ERROR);
BindVertexBuffer(0, vbo, 2048, 128);
GetInteger64i_v(GL_VERTEX_BINDING_OFFSET, 0, &offset);
EXPECT_EQ(offset, 2048);
EXPECT_EQ(GetError(), GL_NO_ERROR);
}
} // namespace