Matteo Bruni : wined3d: Store the directional light direction in the lightDirn field.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 540130bfa9c0e53fa3c58a8f263fabbdc44f0534
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=540130bfa9c0e53fa3c58a8f26...

Author: Matteo Bruni <mbruni(a)codeweavers.com>
Date:   Mon Apr 27 17:39:10 2015 +0200

wined3d: Store the directional light direction in the lightDirn field.

It's only an implementation detail that the direction needs to be passed
to the fixed function GL pipeline as GL_POSITION.

---

 dlls/wined3d/device.c      | 8 ++++----
 dlls/wined3d/glsl_shader.c | 5 ++++-
 dlls/wined3d/state.c       | 7 +++++--
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index 8572378..0ae29c7 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -1531,10 +1531,10 @@ HRESULT CDECL wined3d_device_set_light(struct wined3d_device *device,
 
         case WINED3D_LIGHT_DIRECTIONAL:
             /* Direction */
-            object->lightPosn[0] = -light->direction.x;
-            object->lightPosn[1] = -light->direction.y;
-            object->lightPosn[2] = -light->direction.z;
-            object->lightPosn[3] = 0.0f;
+            object->lightDirn[0] = -light->direction.x;
+            object->lightDirn[1] = -light->direction.y;
+            object->lightDirn[2] = -light->direction.z;
+            object->lightDirn[3] = 0.0f;
             object->exponent = 0.0f;
             object->cutoff = 180.0f;
             break;
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 851fc28..e49aff7 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -7529,7 +7529,10 @@ static void glsl_vertex_pipe_view(struct wined3d_context *context, const struct
     {
         if (!(light = state->lights[k]))
             continue;
-        gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightPosn);
+        if (light->OriginalParms.type == WINED3D_LIGHT_DIRECTIONAL)
+            gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightDirn);
+        else
+            gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightPosn);
         checkGLcall("glLightfv posn");
         gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_SPOT_DIRECTION, light->lightDirn);
         checkGLcall("glLightfv dirn");
diff --git a/dlls/wined3d/state.c b/dlls/wined3d/state.c
index c938771..92c8547 100644
--- a/dlls/wined3d/state.c
+++ b/dlls/wined3d/state.c
@@ -3973,7 +3973,10 @@ static void transform_view(struct wined3d_context *context, const struct wined3d
     {
         if (!(light = state->lights[k]))
             continue;
-        gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightPosn);
+        if (light->OriginalParms.type == WINED3D_LIGHT_DIRECTIONAL)
+            gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightDirn);
+        else
+            gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_POSITION, light->lightPosn);
         checkGLcall("glLightfv posn");
         gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + light->glIndex, GL_SPOT_DIRECTION, light->lightDirn);
         checkGLcall("glLightfv dirn");
@@ -4800,7 +4803,7 @@ void light(struct wined3d_context *context, const struct wined3d_state *state, D
             case WINED3D_LIGHT_DIRECTIONAL:
                 /* Direction */
                 /* Note GL uses w position of 0 for direction! */
-                gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + Index, GL_POSITION, lightInfo->lightPosn);
+                gl_info->gl_ops.gl.p_glLightfv(GL_LIGHT0 + Index, GL_POSITION, lightInfo->lightDirn);
                 checkGLcall("glLightfv");
                 gl_info->gl_ops.gl.p_glLightf(GL_LIGHT0 + Index, GL_SPOT_CUTOFF, lightInfo->cutoff);
                 checkGLcall("glLightf");