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[D3D12] 8/16bpp resolves, fixed16 RT exp bias, RT format documentation

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Triang3l
2018-09-26 16:06:43 +03:00
parent 6e36101b42
commit 70103804c3
72 changed files with 3261 additions and 1538 deletions
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22
src/xenia/gpu/d3d12/d3d12_command_processor.cc
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@@ -1530,12 +1530,24 @@ void D3D12CommandProcessor::UpdateSystemConstantValues(
default:
color_info = regs[XE_GPU_REG_RB_COLOR_INFO].u32;
}
float color_exp_bias;
// Exponent bias is in bits 20:25 of RB_COLOR_INFO.
*reinterpret_cast<int32_t*>(&color_exp_bias) =
0x3F800000 + (int32_t((color_info & (0x3F << 20)) << 6) >> 3);
dirty |= system_constants_.color_exp_bias[i] != color_exp_bias;
system_constants_.color_exp_bias[i] = color_exp_bias;
int32_t color_exp_bias = int32_t(color_info << 6) >> 26;
ColorRenderTargetFormat color_format =
ColorRenderTargetFormat((color_info >> 16) & 0xF);
if (color_format == ColorRenderTargetFormat::k_16_16 ||
color_format == ColorRenderTargetFormat::k_16_16_16_16) {
// On the Xbox 360, k_16_16_EDRAM and k_16_16_16_16_EDRAM internally have
// -32...32 range and expect shaders to give -32...32 values, but they're
// emulated using normalized RG16/RGBA16, so the value returned from the
// shader needs to be divided by 32.
// http://www.students.science.uu.nl/~3220516/advancedgraphics/papers/inferred_lighting.pdf
color_exp_bias -= 5;
}
float color_exp_bias_scale;
*reinterpret_cast<int32_t*>(&color_exp_bias_scale) =
0x3F800000 + (color_exp_bias << 23);
dirty |= system_constants_.color_exp_bias[i] != color_exp_bias_scale;
system_constants_.color_exp_bias[i] = color_exp_bias_scale;
dirty |= system_constants_.color_output_map[i] !=
render_targets[i].guest_render_target;
system_constants_.color_output_map[i] =