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graphics: support RDNA2 custom pixel interpolation

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Co-authored-by: Senaxx <Senaxx@users.noreply.github.com>
This commit is contained in:
nmzik
2026-08-21 23:33:40 +02:00
parent 17c2b4cc7d
commit 5e64efce4f
14 changed files with 414 additions and 28 deletions
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src/graphics/shader/shader.cpp
+24 -5
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@@ -85,7 +85,12 @@ uint32_t ShaderPixelParameterLocation(const ShaderPixelInputInfo& info,
}
bool ShaderPixelParameterIsFlat(const ShaderPixelInputInfo& info, uint32_t input) {
return input < info.input_num && (info.interpolator_settings[input] & PsInputFlatShade) != 0;
return input < info.input_num && (info.interpolator_settings[input] & PsInputFlatShade) != 0 &&
!ShaderPixelParameterIsCustom(info, input);
}
bool ShaderPixelParameterIsCustom(const ShaderPixelInputInfo& info, uint32_t input) {
return input < 32u && (info.custom_interpolation_mask & (1u << input)) != 0;
}
struct ShaderBinaryInfo {
@@ -854,9 +859,18 @@ static void ShaderGetStaticInputInfoPS(
// SPI_PS_IN_CONTROL.NUM_INTERP occupies bits 5:0. Keep the remaining control
// flags in the hardware state and extract only the input count here.
ps_info.input_num = sh.ps_in_control & 0x3fu;
ps_info.ps_system_input_base = ShaderCalcPsSystemInputBase(sh);
const uint32_t active_inputs = sh.ps_input_ena & sh.ps_input_addr;
ps_info.input_num = sh.ps_in_control & 0x3fu;
ps_info.ps_system_input_base = ShaderCalcPsSystemInputBase(sh);
const uint32_t active_inputs = sh.ps_input_ena & sh.ps_input_addr;
if ((active_inputs & 0x00000002u) != 0) {
ps_info.ps_perspective_center_vgpr = (active_inputs & 0x00000001u) != 0 ? 2u : 0u;
}
for (uint32_t i = 0; i < data.num_input_semantics && i < ps_info.input_num && i < 32u; i++) {
const auto& semantic = data.input_semantics[i];
if (semantic.is_custom != 0 && semantic.is_f16 == 0) {
ps_info.custom_interpolation_mask |= 1u << i;
}
}
ps_info.ps_pos_x = (active_inputs & 0x00000100u) != 0;
ps_info.ps_pos_y = (active_inputs & 0x00000200u) != 0;
ps_info.ps_pos_xy = ps_info.ps_pos_x && ps_info.ps_pos_y;
@@ -1297,6 +1311,8 @@ void ShaderDbgDumpInputInfo(const ShaderPixelInputInfo& info) {
LOGF("\t input_num = %u\n"
"\t ps_system_input_base = %u\n"
"\t custom_interpolation_mask = 0x%08" PRIx32 "\n"
"\t ps_perspective_center_vgpr = %" PRIu32 "\n"
"\t ps_pos_x = %s\n"
"\t ps_pos_y = %s\n"
"\t ps_pos_z = %s\n"
@@ -1307,7 +1323,8 @@ void ShaderDbgDumpInputInfo(const ShaderPixelInputInfo& info) {
"\t ps_pixel_kill_enable = %s\n"
"\t ps_early_z = %s\n"
"\t ps_execute_on_noop = %s\n",
info.input_num, info.ps_system_input_base, info.ps_pos_x ? "true" : "false",
info.input_num, info.ps_system_input_base, info.custom_interpolation_mask,
info.ps_perspective_center_vgpr, info.ps_pos_x ? "true" : "false",
info.ps_pos_y ? "true" : "false", info.ps_pos_z ? "true" : "false",
info.ps_pos_w ? "true" : "false", info.ps_front_face ? "true" : "false",
info.ps_sample_shading ? "true" : "false", info.ps_no_perspective ? "true" : "false",
@@ -1657,6 +1674,8 @@ ShaderId ShaderGetIdPS(const HW::PixelShaderInfo& regs, const ShaderPixelInputIn
ret.ids.push_back(input_info.scratch_size_dwords);
ret.ids.push_back(input_info.input_num);
ret.ids.push_back(input_info.ps_system_input_base);
ret.ids.push_back(input_info.custom_interpolation_mask);
ret.ids.push_back(input_info.ps_perspective_center_vgpr);
ret.ids.push_back(static_cast<uint32_t>(input_info.ps_pos_x));
ret.ids.push_back(static_cast<uint32_t>(input_info.ps_pos_y));
ret.ids.push_back(static_cast<uint32_t>(input_info.ps_pos_z));