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[D3D12] HLSL alphatest

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Triang3l
2018-08-16 13:44:48 +03:00
parent 8d2bfd4b88
commit d94ebaf580
3 changed files with 61 additions and 4 deletions
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35
src/xenia/gpu/d3d12/d3d12_command_processor.cc
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@@ -1032,6 +1032,8 @@ void D3D12CommandProcessor::UpdateSystemConstantValues(
uint32_t sq_program_cntl = regs[XE_GPU_REG_SQ_PROGRAM_CNTL].u32;
uint32_t sq_context_misc = regs[XE_GPU_REG_SQ_CONTEXT_MISC].u32;
uint32_t rb_surface_info = regs[XE_GPU_REG_RB_SURFACE_INFO].u32;
uint32_t rb_colorcontrol = regs[XE_GPU_REG_RB_COLORCONTROL].u32;
uint32_t rb_alpha_ref = regs[XE_GPU_REG_RB_ALPHA_REF].u32;
bool dirty = false;
@@ -1137,6 +1139,39 @@ void D3D12CommandProcessor::UpdateSystemConstantValues(
system_constants_.ssaa_inv_scale[0] = ssaa_inv_scale_x;
system_constants_.ssaa_inv_scale[1] = ssaa_inv_scale_y;
// Alpha test.
uint32_t alpha_test_enabled = (rb_colorcontrol & 0x8) ? 1 : 0;
dirty |= system_constants_.alpha_test_enabled != alpha_test_enabled;
system_constants_.alpha_test_enabled = alpha_test_enabled;
if (rb_colorcontrol & 0x8) {
uint32_t alpha_test_function = rb_colorcontrol & 0x7;
// 0: Never - fail in [-inf, +inf].
// 1: Less - fail in [ref, +inf].
// 2: Equal - pass in [ref, ref].
// 3: Less or equal - pass in [-inf, ref].
// 4: Greater - fail in [-inf, ref].
// 5: Not equal - fail in [ref, ref].
// 6: Greater or equal - pass in [ref, +inf].
// 7: Always - pass in [-inf, +inf].
uint32_t alpha_test_range_start =
(alpha_test_function == 1 || alpha_test_function == 2 ||
alpha_test_function == 5 || alpha_test_function == 6)
? rb_alpha_ref
: 0xFF800000u;
uint32_t alpha_test_range_end =
(alpha_test_function == 2 || alpha_test_function == 3 ||
alpha_test_function == 4 || alpha_test_function == 5)
? rb_alpha_ref
: 0x7F800000u;
uint32_t alpha_test_range_pass = (alpha_test_function & 0x2) ? 1 : 0;
dirty |= system_constants_.alpha_test_range[0] != alpha_test_range_start;
dirty |= system_constants_.alpha_test_range[1] != alpha_test_range_end;
dirty |= system_constants_.alpha_test_range_pass != alpha_test_range_pass;
system_constants_.alpha_test_range[0] = alpha_test_range_start;
system_constants_.alpha_test_range[1] = alpha_test_range_end;
system_constants_.alpha_test_range_pass = alpha_test_range_pass;
}
// Color output index mapping.
for (uint32_t i = 0; i < 4; ++i) {
dirty |= system_constants_.color_output_map[i] !=