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nv2a: Enforce point params min/max size

Browse Source 
[Tests](https://github.com/abaire/nxdk_pgraph_tests/blob/5920c89548e47675f28c7e347f07fc3ee54a4709/src/tests/point_sprite_tests.cpp#L27)
[HW results](https://abaire.github.io/nxdk_pgraph_tests_golden_results/results/Point_sprite/index.html)

Fixes #2378
This commit is contained in:
Erik Abair
2025-11-10 10:50:21 -07:00
committed by Matt Borgerson
parent a9c699d6ec
commit febb54bd4d
1 changed files with 4 additions and 2 deletions
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hw/xbox/nv2a/pgraph/glsl/vsh-ff.c
+4 -2
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@@ -489,13 +489,15 @@ GLSL_DEFINE(materialEmissionColor, GLSL_LTCTXA(NV_IGRAPH_XF_LTCTXA_CM_COL) ".xyz
" oPos.xy *= oPos.w;\n"
);
/* FIXME: Testing */
if (state->point_params_enable) {
mstring_append(
body,
" float d_e = length(position * modelViewMat0);\n"
" float ptMinSize = min(pointParams[7], 63.875);\n"
" float ptMaxSize = min(pointParams[3] + ptMinSize, 63.875);\n"
" oPts.x = 1/sqrt(pointParams[0] + pointParams[1] * d_e + pointParams[2] * d_e * d_e) + pointParams[6];\n");
mstring_append_fmt(body, " oPts.x = min(oPts.x * pointParams[3] + pointParams[7], 64.0) * %d;\n",
mstring_append_fmt(body,
" oPts.x = clamp(oPts.x * pointParams[3] + pointParams[7], ptMinSize, ptMaxSize) * %d;\n",
state->surface_scale_factor);
} else {
mstring_append_fmt(body, " oPts.x = %f * %d;\n", state->point_size,