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nv2a: (Probably partial) handling for `1D7C` 

Implements handling for the unknown 0x1D7C command in order to match observed
behavior in the MS Dashboard and Tenchu: Return from Darkness.

Setting 1D7C's low bit appears to disable the line and poly smoothing commands.

Fixes #1162

[Test](https://github.com/abaire/nxdk_pgraph_tests/blob/main/src/tests/three_d_primitive_tests.cpp)
[HW Results](https://github.com/abaire/nxdk_pgraph_tests_golden_results/wiki/Results-3D_primitive)
This commit is contained in:
Erik Abair 2022-07-15 23:59:01 -07:00 committed by mborgerson
parent d557a294fe
commit 5cd1e3cbca
5 changed files with 21 additions and 4 deletions
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1
hw/xbox/nv2a/nv2a.c
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@ -517,6 +517,7 @@ static const VMStateDescription vmstate_nv2a = {
VMSTATE_INT32_ARRAY(pgraph.gl_draw_arrays_start, NV2AState, 1250),
VMSTATE_INT32_ARRAY(pgraph.gl_draw_arrays_count, NV2AState, 1250),
VMSTATE_UINT32_ARRAY(pgraph.regs, NV2AState, 0x2000),
VMSTATE_BOOL(pgraph.smoothing_enabled, NV2AState),
VMSTATE_UINT32(pmc.pending_interrupts, NV2AState),
VMSTATE_UINT32(pmc.enabled_interrupts, NV2AState),
VMSTATE_UINT32(pfifo.pending_interrupts, NV2AState),

2
hw/xbox/nv2a/nv2a_int.h
View File

@ -360,6 +360,8 @@ typedef struct PGRAPHState {
bool ltc1_dirty[NV2A_LTC1_COUNT];
float material_alpha;
// FIXME: Find the correct register for this.
bool smoothing_enabled;
// should figure out where these are in lighting context
float light_infinite_half_vector[NV2A_MAX_LIGHTS][3];

2
hw/xbox/nv2a/nv2a_regs.h
View File

@ -1220,6 +1220,8 @@
# define NV097_SET_ZMIN_MAX_CONTROL_ZCLAMP_EN 0x000000F0
# define NV097_SET_ZMIN_MAX_CONTROL_ZCLAMP_EN_CULL 0
# define NV097_SET_ZMIN_MAX_CONTROL_ZCLAMP_EN_CLAMP 1
# define NV097_SET_SMOOTHING_CONTROL 0x00001D7C
# define NV097_SET_SMOOTHING_CONTROL_DISABLE 0x00000001
# define NV097_SET_ZSTENCIL_CLEAR_VALUE 0x00001D8C
# define NV097_SET_COLOR_CLEAR_VALUE 0x00001D90
# define NV097_CLEAR_SURFACE 0x00001D94

19
hw/xbox/nv2a/pgraph.c
View File

@ -3049,14 +3049,16 @@ DEF_METHOD(NV097, SET_BEGIN_END)
glEnable(GL_PROGRAM_POINT_SIZE);
/* Edge Antialiasing */
if (pg->regs[NV_PGRAPH_SETUPRASTER] &
NV_PGRAPH_SETUPRASTER_LINESMOOTHENABLE) {
if (pg->smoothing_enabled
&& pg->regs[NV_PGRAPH_SETUPRASTER] &
NV_PGRAPH_SETUPRASTER_LINESMOOTHENABLE) {
glEnable(GL_LINE_SMOOTH);
} else {
glDisable(GL_LINE_SMOOTH);
}
if (pg->regs[NV_PGRAPH_SETUPRASTER] &
NV_PGRAPH_SETUPRASTER_POLYSMOOTHENABLE) {
if (pg->smoothing_enabled
&& pg->regs[NV_PGRAPH_SETUPRASTER] &
NV_PGRAPH_SETUPRASTER_POLYSMOOTHENABLE) {
glEnable(GL_POLYGON_SMOOTH);
} else {
glDisable(GL_POLYGON_SMOOTH);
@ -3457,6 +3459,14 @@ DEF_METHOD(NV097, SET_ZMIN_MAX_CONTROL)
}
}
DEF_METHOD(NV097, SET_SMOOTHING_CONTROL)
{
// FIXME: Find the correct register for this.
pg->smoothing_enabled = !GET_MASK(parameter,
NV097_SET_SMOOTHING_CONTROL_DISABLE);
// FIXME: Handle the remaining bits (observed values 0xFFFF0000, 0xFFFF0001)
}
DEF_METHOD(NV097, SET_ZSTENCIL_CLEAR_VALUE)
{
pg->regs[NV_PGRAPH_ZSTENCILCLEARVALUE] = parameter;
@ -4027,6 +4037,7 @@ void pgraph_init(NV2AState *d)
shader_cache_init(pg);
pg->material_alpha = 0.0f;
pg->smoothing_enabled = false;
SET_MASK(pg->regs[NV_PGRAPH_CONTROL_3], NV_PGRAPH_CONTROL_3_SHADEMODE,
NV_PGRAPH_CONTROL_3_SHADEMODE_SMOOTH);
pg->primitive_mode = PRIM_TYPE_INVALID;

1
hw/xbox/nv2a/pgraph_methods.h
View File

@ -169,6 +169,7 @@ DEF_METHOD_RANGE(NV097, SET_VERTEX_DATA4S_M, 32)
DEF_METHOD(NV097, SET_SEMAPHORE_OFFSET)
DEF_METHOD(NV097, BACK_END_WRITE_SEMAPHORE_RELEASE)
DEF_METHOD(NV097, SET_ZMIN_MAX_CONTROL)
DEF_METHOD(NV097, SET_SMOOTHING_CONTROL)
DEF_METHOD(NV097, SET_ZSTENCIL_CLEAR_VALUE)
DEF_METHOD(NV097, SET_COLOR_CLEAR_VALUE)
DEF_METHOD(NV097, CLEAR_SURFACE)