diff options
Diffstat (limited to 'src/video_core/renderer_opengl/gl_device.cpp')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_device.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp index b30d5be74..5cfa97fc2 100644 --- a/src/video_core/renderer_opengl/gl_device.cpp +++ b/src/video_core/renderer_opengl/gl_device.cpp @@ -17,6 +17,9 @@ namespace OpenGL { namespace { +// One uniform block is reserved for emulation purposes +constexpr u32 ReservedUniformBlocks = 1; + template <typename T> T GetInteger(GLenum pname) { GLint temporary; @@ -48,6 +51,22 @@ bool HasExtension(const std::vector<std::string_view>& images, std::string_view return std::find(images.begin(), images.end(), extension) != images.end(); } +constexpr Device::BaseBindings operator+(Device::BaseBindings lhs, Device::BaseBindings rhs) { + return Device::BaseBindings{lhs.uniform_buffer + rhs.uniform_buffer, + lhs.shader_storage_buffer + rhs.shader_storage_buffer, + lhs.sampler + rhs.sampler, lhs.image + rhs.image}; +} + +Device::BaseBindings BuildBaseBindings(GLenum uniform_blocks, GLenum shader_storage_blocks, + GLenum texture_image_units, GLenum image_uniforms) noexcept { + return Device::BaseBindings{ + GetInteger<u32>(uniform_blocks) - ReservedUniformBlocks, + GetInteger<u32>(shader_storage_blocks), + GetInteger<u32>(texture_image_units), + GetInteger<u32>(image_uniforms), + }; +} + } // Anonymous namespace Device::Device() { @@ -56,6 +75,29 @@ Device::Device() { const bool is_nvidia = vendor == "NVIDIA Corporation"; + // Reserve the first UBO for emulation bindings + base_bindings[0] = BaseBindings{ReservedUniformBlocks, 0, 0, 0}; + base_bindings[1] = base_bindings[0] + BuildBaseBindings(GL_MAX_VERTEX_UNIFORM_BLOCKS, + GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, + GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, + GL_MAX_VERTEX_IMAGE_UNIFORMS); + base_bindings[2] = + base_bindings[1] + BuildBaseBindings(GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS, + GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS, + GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS, + GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS); + base_bindings[3] = + base_bindings[2] + BuildBaseBindings(GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS, + GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS, + GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS, + GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS); + base_bindings[4] = base_bindings[3] + BuildBaseBindings(GL_MAX_GEOMETRY_UNIFORM_BLOCKS, + GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS, + GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS, + GL_MAX_GEOMETRY_IMAGE_UNIFORMS); + // Compute doesn't need any of that + base_bindings[5] = BaseBindings{0, 0, 0, 0}; + uniform_buffer_alignment = GetInteger<std::size_t>(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT); shader_storage_alignment = GetInteger<std::size_t>(GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT); max_vertex_attributes = GetInteger<u32>(GL_MAX_VERTEX_ATTRIBS); |