Mesa (master): i915: Fall back on NPOT textured metaops on 830-class.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 8ec6e036792decf5149a209e51cb5e93ccc5c754
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8ec6e036792decf5149a209e51cb5e93ccc5c754

Author: Eric Anholt <eric at anholt.net>
Date:   Tue May 26 20:45:29 2009 -0700

i915: Fall back on NPOT textured metaops on 830-class.

---

 src/mesa/drivers/dri/intel/intel_context.h      |    6 ++++++
 src/mesa/drivers/dri/intel/intel_pixel_bitmap.c |    8 ++++++++
 src/mesa/drivers/dri/intel/intel_pixel_draw.c   |   16 ++++++++++++++++
 3 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/intel/intel_context.h b/src/mesa/drivers/dri/intel/intel_context.h
index e931e40..8b68cc3 100644
--- a/src/mesa/drivers/dri/intel/intel_context.h
+++ b/src/mesa/drivers/dri/intel/intel_context.h
@@ -569,4 +569,10 @@ intel_context(GLcontext * ctx)
    return (struct intel_context *) ctx;
 }
 
+static INLINE GLboolean
+is_power_of_two(uint32_t value)
+{
+   return (value & (value - 1)) == 0;
+}
+
 #endif
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c b/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c
index b20840b..80d3239 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c
@@ -400,6 +400,14 @@ intel_texture_bitmap(GLcontext * ctx,
       return GL_FALSE;
    }
 
+   if (!ctx->Extensions.ARB_texture_non_power_of_two &&
+       (!is_power_of_two(width) || !is_power_of_two(height))) {
+      if (INTEL_DEBUG & DEBUG_FALLBACKS)
+	 fprintf(stderr,
+		 "glBitmap() fallback: NPOT texture\n");
+      return GL_FALSE;
+   }
+
    /* Check that we can load in a texture this big. */
    if (width > (1 << (ctx->Const.MaxTextureLevels - 1)) ||
        height > (1 << (ctx->Const.MaxTextureLevels - 1))) {
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_draw.c b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
index abcdcd5..7cda6ad 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel_draw.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
@@ -119,6 +119,14 @@ intel_texture_drawpixels(GLcontext * ctx,
       return GL_FALSE;
    }
 
+   if (!ctx->Extensions.ARB_texture_non_power_of_two &&
+       (!is_power_of_two(width) || !is_power_of_two(height))) {
+      if (INTEL_DEBUG & DEBUG_FALLBACKS)
+	 fprintf(stderr,
+		 "glDrawPixels() fallback: NPOT texture\n");
+      return GL_FALSE;
+   }
+
    _mesa_PushAttrib(GL_ENABLE_BIT | GL_TEXTURE_BIT |
 		    GL_CURRENT_BIT);
    _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
@@ -262,6 +270,14 @@ intel_stencil_drawpixels(GLcontext * ctx,
       return GL_FALSE;
    }
 
+   if (!ctx->Extensions.ARB_texture_non_power_of_two &&
+       (!is_power_of_two(width) || !is_power_of_two(height))) {
+      if (INTEL_DEBUG & DEBUG_FALLBACKS)
+	 fprintf(stderr,
+		 "glDrawPixels(GL_STENCIL_INDEX) fallback: NPOT texture\n");
+      return GL_FALSE;
+   }
+
    _mesa_PushAttrib(GL_ENABLE_BIT | GL_TEXTURE_BIT |
 		    GL_CURRENT_BIT | GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);