Mesa (master): dri/nv04: Enable eng3dm for A8/L8 textures.

[Francisco Jerez]

Module: Mesa
Branch: master
Commit: c344f27539a93e885ddcb8ceb066d481a6cd60cf
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=c344f27539a93e885ddcb8ceb066d481a6cd60cf

Author: Andrew Randrianasulu <randrianas...@gmail.com>
Date:   Tue Sep 14 04:29:52 2010 +0200

dri/nv04: Enable eng3dm for A8/L8 textures.

Signed-off-by: Francisco Jerez <curroje...@riseup.net>

---

 src/mesa/drivers/dri/nouveau/nv04_context.c |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/nouveau/nv04_context.c 
b/src/mesa/drivers/dri/nouveau/nv04_context.c
index 1d34c86..9c32b48 100644
--- a/src/mesa/drivers/dri/nouveau/nv04_context.c
+++ b/src/mesa/drivers/dri/nouveau/nv04_context.c
@@ -31,6 +31,20 @@
 #include "nouveau_class.h"
 #include "nv04_driver.h"
 
+static GLboolean
+texunit_needs_combiners(struct gl_texture_unit *u)
+{
+       struct gl_texture_object *t = u->_Current;
+       struct gl_texture_image *ti = t->Image[0][t->BaseLevel];
+
+       return ti->TexFormat == MESA_FORMAT_A8 ||
+               ti->TexFormat == MESA_FORMAT_L8 ||
+               u->EnvMode == GL_COMBINE ||
+               u->EnvMode == GL_COMBINE4_NV ||
+               u->EnvMode == GL_BLEND ||
+               u->EnvMode == GL_ADD;
+}
+
 struct nouveau_grobj *
 nv04_context_engine(GLcontext *ctx)
 {
@@ -38,10 +52,8 @@ nv04_context_engine(GLcontext *ctx)
        struct nouveau_hw_state *hw = &to_nouveau_context(ctx)->hw;
        struct nouveau_grobj *fahrenheit;
 
-       if (ctx->Texture.Unit[0].EnvMode == GL_COMBINE ||
-           ctx->Texture.Unit[0].EnvMode == GL_COMBINE4_NV ||
-           ctx->Texture.Unit[0].EnvMode == GL_BLEND ||
-           ctx->Texture.Unit[0].EnvMode == GL_ADD ||
+       if ((ctx->Texture.Unit[0]._ReallyEnabled &&
+            texunit_needs_combiners(&ctx->Texture.Unit[0])) ||
            ctx->Texture.Unit[1]._ReallyEnabled ||
            ctx->Stencil.Enabled)
                fahrenheit = hw->eng3dm;

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