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port: detect fog alpha usage

This commit is contained in:
fgsfds 2023-08-03 16:58:52 +02:00
parent 406900e253
commit a12d756d79
1 changed files with 6 additions and 2 deletions
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8
port/fast3d/gfx_pc.cpp
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@ -1001,6 +1001,11 @@ static void gfx_adjust_width_height_for_scale(uint32_t& width, uint32_t& height)
static void gfx_sp_vertex(size_t n_vertices, size_t dest_index, const Vtx* vertices) {
SUPPORT_CHECK(n_vertices <= MAX_VERTICES);
// seems like PD likes to use fog color/alpha without enabling G_FOG
const bool use_fog = (rsp.geometry_mode & G_FOG) ||
(rdp.other_mode_l >> 30) == G_BL_CLR_FOG ||
(rdp.other_mode_l >> 26) == G_BL_A_FOG;
for (size_t i = 0; i < n_vertices; i++, dest_index++) {
const Vtx* v = &vertices[i];
struct LoadedVertex* d = &rsp.loaded_vertices[dest_index];
@ -1114,8 +1119,7 @@ static void gfx_sp_vertex(size_t n_vertices, size_t dest_index, const Vtx* verti
d->z = z;
d->w = w;
// seems like PD uses the fog color without setting G_FOG sometimes
if ((rsp.geometry_mode & G_FOG) || (rdp.other_mode_l >> 30) == G_BL_CLR_FOG) {
if (use_fog) {
if (fabsf(w) < 0.001f) {
// To avoid division by zero
w = 0.001f;