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Implementing alpha testing.

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This commit is contained in:
Ben Vanik
2015-03-20 20:12:27 -07:00
parent a82587f943
commit f7d0c427be
4 changed files with 56 additions and 24 deletions
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17
src/xenia/gpu/gl4/command_processor.cc
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@@ -1812,14 +1812,6 @@ CommandProcessor::UpdateStatus CommandProcessor::UpdateState() {
bool mismatch = false;
// Alpha testing -- ALPHAREF, ALPHAFUNC, ALPHATESTENABLE
// Deprecated in GL, implemented in shader.
// if(ALPHATESTENABLE && frag_out.a [<=/ALPHAFUNC] ALPHAREF) discard;
uint32_t color_control = regs[XE_GPU_REG_RB_COLORCONTROL].u32;
draw_batcher_.set_alpha_test((color_control & 0x4) != 0, // ALPAHTESTENABLE
color_control & 0x3, // ALPHAFUNC
regs[XE_GPU_REG_RB_ALPHA_REF].f32);
#define CHECK_UPDATE_STATUS(status, mismatch, error_message) \
{ \
if (status == UpdateStatus::kError) { \
@@ -2075,8 +2067,17 @@ CommandProcessor::UpdateStatus CommandProcessor::UpdateRasterizerState() {
}
CommandProcessor::UpdateStatus CommandProcessor::UpdateBlendState() {
auto& reg_file = *register_file_;
auto& regs = update_blend_state_regs_;
// Alpha testing -- ALPHAREF, ALPHAFUNC, ALPHATESTENABLE
// Deprecated in GL, implemented in shader.
// if(ALPHATESTENABLE && frag_out.a [<=/ALPHAFUNC] ALPHAREF) discard;
uint32_t color_control = reg_file[XE_GPU_REG_RB_COLORCONTROL].u32;
draw_batcher_.set_alpha_test((color_control & 0x4) != 0, // ALPAHTESTENABLE
color_control & 0x3, // ALPHAFUNC
reg_file[XE_GPU_REG_RB_ALPHA_REF].f32);
bool dirty = false;
dirty |=
SetShadowRegister(regs.rb_blendcontrol[0], XE_GPU_REG_RB_BLENDCONTROL_0);