diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/video_core/renderer_opengl/gl_device.cpp | 112 |
1 files changed, 76 insertions, 36 deletions
diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp index 3adf57c96..a95bd4b2c 100644 --- a/src/video_core/renderer_opengl/gl_device.cpp +++ b/src/video_core/renderer_opengl/gl_device.cpp @@ -5,7 +5,9 @@ #include <algorithm> #include <array> #include <cstddef> +#include <optional> #include <vector> + #include <glad/glad.h> #include "common/logging/log.h" @@ -20,6 +22,27 @@ namespace { // One uniform block is reserved for emulation purposes constexpr u32 ReservedUniformBlocks = 1; +constexpr u32 NumStages = 5; + +constexpr std::array LimitUBOs = {GL_MAX_VERTEX_UNIFORM_BLOCKS, GL_MAX_TESS_CONTROL_UNIFORM_BLOCKS, + GL_MAX_TESS_EVALUATION_UNIFORM_BLOCKS, + GL_MAX_GEOMETRY_UNIFORM_BLOCKS, GL_MAX_FRAGMENT_UNIFORM_BLOCKS}; + +constexpr std::array LimitSSBOs = { + GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS, + GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS, GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS, + GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS}; + +constexpr std::array LimitSamplers = { + GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS, + GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS, GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS, + GL_MAX_TEXTURE_IMAGE_UNITS}; + +constexpr std::array LimitImages = {GL_MAX_VERTEX_IMAGE_UNIFORMS, + GL_MAX_TESS_CONTROL_IMAGE_UNIFORMS, + GL_MAX_TESS_EVALUATION_IMAGE_UNIFORMS, + GL_MAX_GEOMETRY_IMAGE_UNIFORMS, GL_MAX_FRAGMENT_IMAGE_UNIFORMS}; + template <typename T> T GetInteger(GLenum pname) { GLint temporary; @@ -51,54 +74,71 @@ 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}; +u32 Extract(u32& base, u32& num, u32 amount, std::optional<GLenum> limit = {}) { + ASSERT(num >= amount); + if (limit) { + amount = std::min(amount, GetInteger<u32>(*limit)); + } + num -= amount; + return std::exchange(base, base + amount); } -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), - }; +std::array<Device::BaseBindings, Tegra::Engines::MaxShaderTypes> BuildBaseBindings() noexcept { + std::array<Device::BaseBindings, Tegra::Engines::MaxShaderTypes> bindings; + + static std::array<std::size_t, 5> stage_swizzle = {0, 1, 2, 3, 4}; + const u32 total_ubos = GetInteger<u32>(GL_MAX_UNIFORM_BUFFER_BINDINGS); + const u32 total_ssbos = GetInteger<u32>(GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS); + const u32 total_samplers = GetInteger<u32>(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS); + + u32 num_ubos = total_ubos - ReservedUniformBlocks; + u32 num_ssbos = total_ssbos; + u32 num_samplers = total_samplers; + + u32 base_ubo = ReservedUniformBlocks; + u32 base_ssbo = 0; + u32 base_samplers = 0; + + for (std::size_t i = 0; i < NumStages; ++i) { + const std::size_t stage = stage_swizzle[i]; + bindings[stage] = { + Extract(base_ubo, num_ubos, total_ubos / NumStages, LimitUBOs[stage]), + Extract(base_ssbo, num_ssbos, total_ssbos / NumStages, LimitSSBOs[stage]), + Extract(base_samplers, num_samplers, total_samplers / NumStages, LimitSamplers[stage])}; + } + + u32 num_images = GetInteger<u32>(GL_MAX_IMAGE_UNITS); + u32 base_images = 0; + + // Reserve more image bindings on fragment and vertex stages. + bindings[4].image = + Extract(base_images, num_images, num_images / NumStages + 2, LimitImages[4]); + bindings[0].image = + Extract(base_images, num_images, num_images / NumStages + 1, LimitImages[0]); + + // Reserve the other image bindings. + const u32 total_extracted_images = num_images / (NumStages - 2); + for (std::size_t i = 2; i < NumStages; ++i) { + const std::size_t stage = stage_swizzle[i]; + bindings[stage].image = + Extract(base_images, num_images, total_extracted_images, LimitImages[stage]); + } + + // Compute doesn't care about any of this. + bindings[5] = {0, 0, 0, 0}; + + return bindings; } } // Anonymous namespace -Device::Device() { +Device::Device() : base_bindings{BuildBaseBindings()} { const std::string_view vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR)); const std::vector extensions = GetExtensions(); const bool is_nvidia = vendor == "NVIDIA Corporation"; const bool is_intel = vendor == "Intel"; - // 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); |