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Renderer: Add support for storage buffers

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This commit is contained in:
SirLynix
2022-06-17 20:15:16 +02:00
parent 0978feafbc
commit 093d9d344e
16 changed files with 160 additions and 18 deletions
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43
src/Nazara/OpenGLRenderer/Wrapper/Context.cpp
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@@ -191,6 +191,28 @@ namespace Nz::GL
}
}
void Context::BindStorageBuffer(UInt32 storageUnit, GLuint buffer, GLintptr offset, GLsizeiptr size) const
{
if (storageUnit >= m_state.storageUnits.size())
throw std::runtime_error("unsupported storage buffer unit #" + std::to_string(storageUnit));
auto& unit = m_state.storageUnits[storageUnit];
if (unit.buffer != buffer || unit.offset != offset || unit.size != size)
{
if (!SetCurrentContext(this))
throw std::runtime_error("failed to activate context");
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, storageUnit, buffer, offset, size);
unit.buffer = buffer;
unit.offset = offset;
unit.size = size;
// glBindBufferRange does replace the currently bound buffer
m_state.bufferTargets[UnderlyingCast(BufferTarget::Storage)] = buffer;
}
}
void Context::BindTexture(TextureTarget target, GLuint texture) const
{
BindTexture(m_state.currentTextureUnit, target, texture);
@@ -375,6 +397,12 @@ namespace Nz::GL
else if (m_supportedExtensions.count("GL_ARB_gl_spirv"))
m_extensionStatus[UnderlyingCast(Extension::SpirV)] = ExtensionStatus::ARB;
// Storage buffers (SSBO)
if ((m_params.type == ContextType::OpenGL && glVersion >= 430) || (m_params.type == ContextType::OpenGL_ES && glVersion >= 310))
m_extensionStatus[UnderlyingCast(Extension::StorageBuffers)] = ExtensionStatus::Core;
else if (m_supportedExtensions.count("GL_ARB_shader_storage_buffer_object"))
m_extensionStatus[UnderlyingCast(Extension::StorageBuffers)] = ExtensionStatus::ARB;
// Texture compression (S3tc)
if (m_supportedExtensions.count("GL_EXT_texture_compression_s3tc"))
m_extensionStatus[UnderlyingCast(Extension::TextureCompressionS3tc)] = ExtensionStatus::EXT;
@@ -449,7 +477,7 @@ namespace Nz::GL
GLint maxTextureUnits = -1;
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
if (maxTextureUnits < 32) //< OpenGL ES 3.0 requires at least 32 textures units
NazaraWarning("GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS is " + std::to_string(maxTextureUnits) + ", >= 32 expected");
NazaraWarning("GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS is " + std::to_string(maxTextureUnits) + ", expected >= 32");
assert(maxTextureUnits > 0);
m_state.textureUnits.resize(maxTextureUnits);
@@ -457,11 +485,22 @@ namespace Nz::GL
GLint maxUniformBufferUnits = -1;
glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, &maxUniformBufferUnits);
if (maxUniformBufferUnits < 24) //< OpenGL ES 3.0 requires at least 24 uniform buffers units
NazaraWarning("GL_MAX_UNIFORM_BUFFER_BINDINGS is " + std::to_string(maxUniformBufferUnits) + ", >= 24 expected");
NazaraWarning("GL_MAX_UNIFORM_BUFFER_BINDINGS is " + std::to_string(maxUniformBufferUnits) + ", expected >= 24");
assert(maxUniformBufferUnits > 0);
m_state.uboUnits.resize(maxUniformBufferUnits);
if (IsExtensionSupported(Extension::StorageBuffers))
{
GLint maxStorageBufferUnits = -1;
glGetIntegerv(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS, &maxStorageBufferUnits);
if (maxStorageBufferUnits < 24) //< OpenGL ES 3.1 requires at least 8 storage buffers units
NazaraWarning("GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS is " + std::to_string(maxUniformBufferUnits) + ", expected >= 8");
assert(maxStorageBufferUnits > 0);
m_state.storageUnits.resize(maxStorageBufferUnits);
}
std::array<GLint, 4> res;
glGetIntegerv(GL_SCISSOR_BOX, res.data());