diff options
Diffstat (limited to 'src/video_core/vertex_loader.cpp')
| -rw-r--r-- | src/video_core/vertex_loader.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/video_core/vertex_loader.cpp b/src/video_core/vertex_loader.cpp new file mode 100644 index 000000000..e40f0f1ee --- /dev/null +++ b/src/video_core/vertex_loader.cpp @@ -0,0 +1,146 @@ +#include <memory> + +#include <boost/range/algorithm/fill.hpp> + +#include "common/alignment.h" +#include "common/assert.h" +#include "common/bit_field.h" +#include "common/common_types.h" +#include "common/logging/log.h" +#include "common/vector_math.h" + +#include "core/memory.h" + +#include "video_core/debug_utils/debug_utils.h" +#include "video_core/pica.h" +#include "video_core/pica_state.h" +#include "video_core/pica_types.h" +#include "video_core/shader/shader.h" +#include "video_core/vertex_loader.h" + +namespace Pica { + +void VertexLoader::Setup(const Pica::Regs& regs) { + ASSERT_MSG(!is_setup, "VertexLoader is not intended to be setup more than once."); + + const auto& attribute_config = regs.vertex_attributes; + num_total_attributes = attribute_config.GetNumTotalAttributes(); + + boost::fill(vertex_attribute_sources, 0xdeadbeef); + + for (int i = 0; i < 16; i++) { + vertex_attribute_is_default[i] = attribute_config.IsDefaultAttribute(i); + } + + // Setup attribute data from loaders + for (int loader = 0; loader < 12; ++loader) { + const auto& loader_config = attribute_config.attribute_loaders[loader]; + + u32 offset = 0; + + // TODO: What happens if a loader overwrites a previous one's data? + for (unsigned component = 0; component < loader_config.component_count; ++component) { + if (component >= 12) { + LOG_ERROR(HW_GPU, "Overflow in the vertex attribute loader %u trying to load component %u", loader, component); + continue; + } + + u32 attribute_index = loader_config.GetComponent(component); + if (attribute_index < 12) { + offset = Common::AlignUp(offset, attribute_config.GetElementSizeInBytes(attribute_index)); + vertex_attribute_sources[attribute_index] = loader_config.data_offset + offset; + vertex_attribute_strides[attribute_index] = static_cast<u32>(loader_config.byte_count); + vertex_attribute_formats[attribute_index] = attribute_config.GetFormat(attribute_index); + vertex_attribute_elements[attribute_index] = attribute_config.GetNumElements(attribute_index); + offset += attribute_config.GetStride(attribute_index); + } else if (attribute_index < 16) { + // Attribute ids 12, 13, 14 and 15 signify 4, 8, 12 and 16-byte paddings, respectively + offset = Common::AlignUp(offset, 4); + offset += (attribute_index - 11) * 4; + } else { + UNREACHABLE(); // This is truly unreachable due to the number of bits for each component + } + } + } + + is_setup = true; +} + +void VertexLoader::LoadVertex(u32 base_address, int index, int vertex, Shader::InputVertex& input, DebugUtils::MemoryAccessTracker& memory_accesses) { + ASSERT_MSG(is_setup, "A VertexLoader needs to be setup before loading vertices."); + + for (int i = 0; i < num_total_attributes; ++i) { + if (vertex_attribute_elements[i] != 0) { + // Load per-vertex data from the loader arrays + u32 source_addr = base_address + vertex_attribute_sources[i] + vertex_attribute_strides[i] * vertex; + + if (g_debug_context && Pica::g_debug_context->recorder) { + memory_accesses.AddAccess(source_addr, vertex_attribute_elements[i] * ( + (vertex_attribute_formats[i] == Regs::VertexAttributeFormat::FLOAT) ? 4 + : (vertex_attribute_formats[i] == Regs::VertexAttributeFormat::SHORT) ? 2 : 1)); + } + + switch (vertex_attribute_formats[i]) { + case Regs::VertexAttributeFormat::BYTE: + { + const s8* srcdata = reinterpret_cast<const s8*>(Memory::GetPhysicalPointer(source_addr)); + for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) { + input.attr[i][comp] = float24::FromFloat32(srcdata[comp]); + } + break; + } + case Regs::VertexAttributeFormat::UBYTE: + { + const u8* srcdata = reinterpret_cast<const u8*>(Memory::GetPhysicalPointer(source_addr)); + for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) { + input.attr[i][comp] = float24::FromFloat32(srcdata[comp]); + } + break; + } + case Regs::VertexAttributeFormat::SHORT: + { + const s16* srcdata = reinterpret_cast<const s16*>(Memory::GetPhysicalPointer(source_addr)); + for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) { + input.attr[i][comp] = float24::FromFloat32(srcdata[comp]); + } + break; + } + case Regs::VertexAttributeFormat::FLOAT: + { + const float* srcdata = reinterpret_cast<const float*>(Memory::GetPhysicalPointer(source_addr)); + for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) { + input.attr[i][comp] = float24::FromFloat32(srcdata[comp]); + } + break; + } + } + + // Default attribute values set if array elements have < 4 components. This + // is *not* carried over from the default attribute settings even if they're + // enabled for this attribute. + for (unsigned int comp = vertex_attribute_elements[i]; comp < 4; ++comp) { + input.attr[i][comp] = comp == 3 ? float24::FromFloat32(1.0f) : float24::FromFloat32(0.0f); + } + + LOG_TRACE(HW_GPU, "Loaded %d components of attribute %x for vertex %x (index %x) from 0x%08x + 0x%08x + 0x%04x: %f %f %f %f", + vertex_attribute_elements[i], i, vertex, index, + base_address, + vertex_attribute_sources[i], + vertex_attribute_strides[i] * vertex, + input.attr[i][0].ToFloat32(), input.attr[i][1].ToFloat32(), input.attr[i][2].ToFloat32(), input.attr[i][3].ToFloat32()); + } else if (vertex_attribute_is_default[i]) { + // Load the default attribute if we're configured to do so + input.attr[i] = g_state.vs_default_attributes[i]; + LOG_TRACE(HW_GPU, "Loaded default attribute %x for vertex %x (index %x): (%f, %f, %f, %f)", + i, vertex, index, + input.attr[i][0].ToFloat32(), input.attr[i][1].ToFloat32(), + input.attr[i][2].ToFloat32(), input.attr[i][3].ToFloat32()); + } else { + // TODO(yuriks): In this case, no data gets loaded and the vertex + // remains with the last value it had. This isn't currently maintained + // as global state, however, and so won't work in Citra yet. + } + } +} + +} // namespace Pica |