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[Vulkan] Implement support for color_exp_bias.

This commit is contained in:
gibbed 2018-05-19 15:45:13 -05:00
parent 9655b76f68
commit 8064926999
4 changed files with 38 additions and 22 deletions
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33
src/xenia/gpu/spirv_shader_translator.cc
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@ -161,7 +161,7 @@ void SpirvShaderTranslator::StartTranslation() {
// Push constants, represented by SpirvPushConstants.
Id push_constants_type =
b.makeStructType({vec4_float_type_, vec4_float_type_, vec4_float_type_,
vec3_float_type_, float_type_, uint_type_},
vec4_float_type_, vec4_float_type_, uint_type_},
"push_consts_type");
b.addDecoration(push_constants_type, spv::Decoration::DecorationBlock);
@ -180,12 +180,12 @@ void SpirvShaderTranslator::StartTranslation() {
push_constants_type, 2, spv::Decoration::DecorationOffset,
static_cast<int>(offsetof(SpirvPushConstants, point_size)));
b.addMemberName(push_constants_type, 2, "point_size");
// float3 alpha_test;
// float4 alpha_test;
b.addMemberDecoration(
push_constants_type, 3, spv::Decoration::DecorationOffset,
static_cast<int>(offsetof(SpirvPushConstants, alpha_test)));
b.addMemberName(push_constants_type, 3, "alpha_test");
// float color_exp_bias;
// float4 color_exp_bias;
b.addMemberDecoration(
push_constants_type, 4, spv::Decoration::DecorationOffset,
static_cast<int>(offsetof(SpirvPushConstants, color_exp_bias)));
@ -558,23 +558,16 @@ std::vector<uint8_t> SpirvShaderTranslator::CompleteTranslation() {
spv::StorageClass::StorageClassPushConstant, push_consts_,
std::vector<Id>({b.makeUintConstant(4)}));
auto bias = b.createLoad(bias_ptr);
auto cond = b.createBinOp(spv::Op::OpFOrdNotEqual, bool_type_, bias,
b.makeFloatConstant(0.f));
spv::Builder::If bias_if(cond, 0, b);
auto bias_vector = b.createCompositeConstruct(vec4_float_type_,
{bias, bias, bias, bias});
auto oC0_ptr = b.createAccessChain(
spv::StorageClass::StorageClassOutput, frag_outputs_,
std::vector<Id>({b.makeUintConstant(0)}));
auto oC0_biased = b.createBinOp(spv::Op::OpFMul, vec4_float_type_,
b.createLoad(oC0_ptr), bias_vector);
b.createStore(oC0_biased, oC0_ptr);
bias_if.makeEndIf();
for (uint32_t i = 0; i < 4; i++) {
auto bias_value = b.createOp(spv::Op::OpVectorShuffle, vec4_float_type_,
{bias, bias, i, i, i, i});
auto oC_ptr = b.createAccessChain(
spv::StorageClass::StorageClassOutput, frag_outputs_,
std::vector<Id>({b.makeUintConstant(i)}));
auto oC_biased = b.createBinOp(spv::Op::OpFMul, vec4_float_type_,
b.createLoad(oC_ptr), bias_value);
b.createStore(oC_biased, oC_ptr);
}
}
// Alpha test

4
src/xenia/gpu/spirv_shader_translator.h
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@ -36,8 +36,8 @@ struct SpirvPushConstants {
float point_size[4]; // psx, psy, unused, unused
// Accessible to fragment shader only:
float alpha_test[3]; // alpha test enable, func, ref
float color_exp_bias;
float alpha_test[4]; // alpha test enable, func, ref
float color_exp_bias[4];
uint32_t ps_param_gen;
};
static_assert(sizeof(SpirvPushConstants) <= 128,

19
src/xenia/gpu/vulkan/pipeline_cache.cc
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@ -741,6 +741,14 @@ bool PipelineCache::SetDynamicState(VkCommandBuffer command_buffer,
SetShadowRegister(&regs.sq_context_misc, XE_GPU_REG_SQ_CONTEXT_MISC);
push_constants_dirty |=
SetShadowRegister(&regs.rb_colorcontrol, XE_GPU_REG_RB_COLORCONTROL);
push_constants_dirty |=
SetShadowRegister(&regs.rb_color_info, XE_GPU_REG_RB_COLOR_INFO);
push_constants_dirty |=
SetShadowRegister(&regs.rb_color1_info, XE_GPU_REG_RB_COLOR1_INFO);
push_constants_dirty |=
SetShadowRegister(&regs.rb_color2_info, XE_GPU_REG_RB_COLOR2_INFO);
push_constants_dirty |=
SetShadowRegister(&regs.rb_color3_info, XE_GPU_REG_RB_COLOR3_INFO);
push_constants_dirty |=
SetShadowRegister(&regs.rb_alpha_ref, XE_GPU_REG_RB_ALPHA_REF);
push_constants_dirty |=
@ -803,6 +811,17 @@ bool PipelineCache::SetDynamicState(VkCommandBuffer command_buffer,
push_constants.point_size[1] =
static_cast<float>((regs.pa_su_point_size & 0x0000ffff)) / 8.0f;
reg::RB_COLOR_INFO color_info[4] = {
regs.rb_color_info,
regs.rb_color1_info,
regs.rb_color2_info,
regs.rb_color3_info,
};
for (int i = 0; i < 4; i++) {
push_constants.color_exp_bias[i] =
static_cast<float>(1 << color_info[i].color_exp_bias);
}
// Alpha testing -- ALPHAREF, ALPHAFUNC, ALPHATESTENABLE
// Emulated in shader.
// if(ALPHATESTENABLE && frag_out.a [<=/ALPHAFUNC] ALPHAREF) discard;

4
src/xenia/gpu/vulkan/pipeline_cache.h
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@ -289,6 +289,10 @@ class PipelineCache {
uint32_t sq_program_cntl;
uint32_t sq_context_misc;
uint32_t rb_colorcontrol;
uint32_t rb_color_info;
uint32_t rb_color1_info;
uint32_t rb_color2_info;
uint32_t rb_color3_info;
float rb_alpha_ref;
uint32_t pa_su_point_size;