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native render: transliterate D3D8 fixed-function pipeline (unit A)

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- Texture coordinates: TEXCOORDINDEX generation (camera-space normal /
  position / reflection vector, LOCALVIEWER) and D3DTS_TEXTUREn under
  TEXTURETRANSFORMFLAGS (incl. PROJECTED) now run in native.vert; the
  RecordingDevice CPU uv baking and the sphere-map / multiplicative-shadow
  shader hacks are removed. Godot consumer uses Render3DStageTexcoords.
- Lighting: 8 D3D lights in camera space, 1/(a0+a1d+a2d^2) without clamp,
  spot cone theta/2 phi/2 with falloff, diffuse/ambient/emissive material
  sources, NORMALIZENORMALS, inverse-transpose normal matrix.
- Alpha test compares 8-bit alpha against ALPHAREF with ALPHAFUNC.
- Back-buffer Clear() is recorded in draw order and executed with
  vkCmdClearAttachments; render pass clears to 0xff000000.
- D3DVIEWPORT8 (incl. MinZ/MaxZ) is dynamic per-draw state.
- Missing vertex diffuse is opaque white; alpha blend mirrors SRC/DESTBLEND.
- CScreen::ms_clearDepth / ms_diffuseColor initialised to 40250's
  1.0f / 0xffffffff (were zero; exposed once clears were executed).
- Capture format v8; --screenshot-out FILE.bmp swapchain readback.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
shenlei
2026-09-28 12:54:13 +09:00
co-authored by Claude Opus 5.5
parent 425e6f37fb
commit 5285ca85fd
11 changed files with 585 additions and 321 deletions
Download Patch File Download Diff File Expand all files Collapse all files
extension/src/python_host_node.cpp
+16 -3
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@@ -403,6 +403,8 @@ Array Metin2PythonHost::render3d_draws() {
out.resize(static_cast<int64_t>(draws.size()));
int64_t draw_index = 0;
for (const Render3DDraw &draw : draws) {
if (draw.clear_flags)
continue; // back-buffer clears are consumed by the native renderer only
Dictionary item;
item["geometry_key"] = static_cast<int64_t>(draw.geometry_key);
item["geometry_revision"] = static_cast<int64_t>(draw.geometry_revision);
@@ -414,8 +416,14 @@ Array Metin2PythonHost::render3d_draws() {
item["pretransformed"] = draw.pretransformed;
item["lines"] = draw.lines;
// Stage-0 coordinates the D3D8 pipeline generates or transforms depend on per-draw matrices,
// so such draws carry them outside the geometry cache.
const bool stage0_texgen = (draw.texcoord_index[0] & 0xFFFF0000u) != 0 ||
(draw.texcoord_index[0] & 0xFFFFu) != 0 || draw.texture_transform_flags[0] != 0;
if (stage0_texgen)
item["geometry_key"] = static_cast<int64_t>(0);
Dictionary geometry;
if (draw.geometry_key != 0) {
if (draw.geometry_key != 0 && !stage0_texgen) {
auto cached = geometry_cache.find(draw.geometry_key);
if (cached != geometry_cache.end() && cached->second.revision == draw.geometry_revision) {
cached->second.last_used = extraction;
@@ -461,7 +469,11 @@ Array Metin2PythonHost::render3d_draws() {
}
return out;
};
if (!draw.uv0.empty())
if (stage0_texgen) {
std::vector<float> stage_uv;
Render3DStageTexcoords(draw, 0, stage_uv);
geometry["uv0"] = uvs(stage_uv);
} else if (!draw.uv0.empty())
geometry["uv0"] = uvs(draw.uv0);
if (!draw.uv1.empty())
geometry["uv1"] = uvs(draw.uv1);
@@ -477,7 +489,7 @@ Array Metin2PythonHost::render3d_draws() {
for (int64_t i = 0; i < indices.size(); ++i)
indices[i] = static_cast<int32_t>(draw.indices[i]);
geometry["indices"] = indices;
if (draw.geometry_key != 0)
if (draw.geometry_key != 0 && !stage0_texgen)
geometry_cache[draw.geometry_key] = {draw.geometry_revision, extraction, geometry};
}
item.merge(geometry);
@@ -530,6 +542,7 @@ Array Metin2PythonHost::render3d_draws() {
item["viewport"] = vp;
out[draw_index++] = item;
}
out.resize(draw_index);
if (extraction % 120 == 0) {
for (auto it = geometry_cache.begin(); it != geometry_cache.end();) {
if (extraction - it->second.last_used > 120)