Added model scale and translation, so that models have the correct relative sizes.

main.c

@@ -78,8 +78,8 @@ typedef struct
 	ps1texture_t front, back;
 } ps1skin_t;
 
-ps1mdl_t playerModel = { .position = { -200, 128, 64 }, .rotation = { 0 } };
-ps1mdl_t shamblerModel = { .position = { -64, 96, 64 }, .rotation = { 0 } };
+ps1mdl_t playerModel = { .position = { -128, 320, 400 }, .rotation = { 0 } };
+ps1mdl_t shamblerModel = { .position = { 128, 320, 400 }, .rotation = { 0 } };
 ps1skin_t playerSkin, shamblerSkin;
 
 MATRIX color_mtx = {
@@ -369,6 +369,9 @@ void drawModel(ps1mdl_t *model, ps1skin_t *skin, int xOffset, int frameCounter)
 	int vertOffs = frameNum * model->header->vertexCount;
 	short halfSkinWidth = model->halfSkinWidth;
 
+	int *scale = model->header->scale;
+	int *translate = model->header->translate;
+
 	for (int triIdx = 0; triIdx < model->header->triangleCount; ++triIdx)
 	{
 		ps1mdl_triangle_t *tri = &model->triangles[triIdx];
@@ -378,9 +381,11 @@ void drawModel(ps1mdl_t *model, ps1skin_t *skin, int xOffset, int frameCounter)
 		ps1mdl_vertex_t *v2 = &model->vertices[tri->vertexIndex[2] + vertOffs];
 
 		// Swizzle the coordinates because Quake Z is up
-		SVECTOR pos0 = { v0->position[0], -v0->position[2], v0->position[1] };
-		SVECTOR pos1 = { v1->position[0], -v1->position[2], v1->position[1] };
-		SVECTOR pos2 = { v2->position[0], -v2->position[2], v2->position[1] };
+		// TODO: scale and translate should be done by the GTE instead of through software here
+		// Finding the appropriate scale range here is tricky. Normalize with >> 12 as usual and the coordinates become so small that you lose depth precision.
+		SVECTOR pos0 = { (v0->position[0] * scale[0] + translate[0]) >> 10, (-v0->position[2] * scale[2] + translate[2]) >> 10, (v0->position[1] * scale[1] + translate[1]) >> 10 };
+		SVECTOR pos1 = { (v1->position[0] * scale[0] + translate[0]) >> 10, (-v1->position[2] * scale[2] + translate[2]) >> 10, (v1->position[1] * scale[1] + translate[1]) >> 10 };
+		SVECTOR pos2 = { (v2->position[0] * scale[0] + translate[0]) >> 10, (-v2->position[2] * scale[2] + translate[2]) >> 10, (v2->position[1] * scale[1] + translate[1]) >> 10 };
 
 		gte_ldv3(&pos0, &pos1, &pos2);
 		gte_rtpt();	// Rotation, Translation and Perspective triplet (all three vertices at once)

ps1mdl.h

@@ -10,6 +10,9 @@ typedef struct
 	int ident;
 	int version;
 
+	int scale[3];
+	int translate[3];
+
 	unsigned short skinWidth;
 	unsigned short skinHeight;