GPU: Respect matrix and reverse flag w/o normals.

See frame dump in hrydgard#14223, which requires world matrix be applied.
unknownbrackets · Oct 21, 2022 · d23293e · d23293e
1 parent 6945604
commit d23293e
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/GPU/Common/VertexShaderGenerator.cpp b/GPU/Common/VertexShaderGenerator.cpp
@@ -869,15 +869,15 @@ bool GenerateVertexShader(const VShaderID &id, char *buffer, const ShaderLanguag
 				if (hasNormalTess) {
 					WRITE(p, "  mediump vec3 worldnormal = normalizeOr001(mul(vec4(%stess.nrm, 0.0), u_world).xyz);\n", flipNormalTess ? "-" : "");
 				} else {
-					WRITE(p, "  mediump vec3 worldnormal = vec3(0.0, 0.0, 1.0);\n");
+					WRITE(p, "  mediump vec3 worldnormal = normalizeOr001(mul(vec4(0.0, 0.0, %s1.0, 0.0), u_world).xyz);\n", flipNormalTess ? "-" : "");
 				}
 			} else {
 				// No skinning, just standard T&L.
 				WRITE(p, "  vec3 worldpos = mul(vec4(position, 1.0), u_world).xyz;\n");
 				if (hasNormal)
 					WRITE(p, "  mediump vec3 worldnormal = normalizeOr001(mul(vec4(%snormal, 0.0), u_world).xyz);\n", flipNormal ? "-" : "");
 				else
-					WRITE(p, "  mediump vec3 worldnormal = vec3(0.0, 0.0, 1.0);\n");
+					WRITE(p, "  mediump vec3 worldnormal = normalizeOr001(mul(vec4(0.0, 0.0, %s1.0, 0.0), u_world).xyz);\n", flipNormal ? "-" : "");
 			}
 		} else {
 			static const char *rescale[4] = {"", " * 1.9921875", " * 1.999969482421875", ""}; // 2*127.5f/128.f, 2*32767.5f/32768.f, 1.0f};