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Merge pull request #506 from bunnei/depth-functions 

GPU: Implement the remaining depth testing functions.
This commit is contained in:
Tony Wasserka 2015-01-26 11:52:15 +01:00
parent ad666ac47a ff83d23ed5
commit 0cf3c40aa9
2 changed files with 28 additions and 3 deletions
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11
src/video_core/pica.h
View File

@ -311,9 +311,14 @@ struct Regs {
struct { struct {
enum DepthFunc : u32 { enum DepthFunc : u32 {
Always = 1, Never = 0,
LessThan = 4, Always = 1,
GreaterThan = 6, Equal = 2,
NotEqual = 3,
LessThan = 4,
LessThanOrEqual = 5,
GreaterThan = 6,
GreaterThanOrEqual = 7,
}; };
union { union {

20
src/video_core/rasterizer.cpp
View File

@ -441,18 +441,38 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0,
bool pass = false; bool pass = false;
switch (registers.output_merger.depth_test_func) { switch (registers.output_merger.depth_test_func) {
case registers.output_merger.Never:
pass = false;
break;
case registers.output_merger.Always: case registers.output_merger.Always:
pass = true; pass = true;
break; break;
case registers.output_merger.Equal:
pass = z == ref_z;
break;
case registers.output_merger.NotEqual:
pass = z != ref_z;
break;
case registers.output_merger.LessThan: case registers.output_merger.LessThan:
pass = z < ref_z; pass = z < ref_z;
break; break;
case registers.output_merger.LessThanOrEqual:
pass = z <= ref_z;
break;
case registers.output_merger.GreaterThan: case registers.output_merger.GreaterThan:
pass = z > ref_z; pass = z > ref_z;
break; break;
case registers.output_merger.GreaterThanOrEqual:
pass = z >= ref_z;
break;
default: default:
LOG_ERROR(HW_GPU, "Unknown depth test function %x", registers.output_merger.depth_test_func.Value()); LOG_ERROR(HW_GPU, "Unknown depth test function %x", registers.output_merger.depth_test_func.Value());
break; break;