From: Eric Anholt <eric@anholt.net>
Date: Mon, 9 Feb 2009 13:55:31 +0000 (+0100)
Subject: intel: Speed up glDrawPixels(GL_ALPHA) by using an alpha texture format.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0b63f6449e095fa3b5ef510e1c1eadc2e0e0ea36;p=mesa.git

intel: Speed up glDrawPixels(GL_ALPHA) by using an alpha texture format.
---

diff --git a/src/mesa/drivers/dri/intel/intel_pixel_draw.c b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
index 0c9cf08ab9c..7be7ea82b35 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel_draw.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel_draw.c
@@ -73,6 +73,7 @@ intel_texture_drawpixels(GLcontext * ctx,
    GLfloat texcoords[4][2];
    GLfloat z;
    GLint old_active_texture;
+   GLenum internalFormat;
 
    /* We're going to mess with texturing with no regard to existing texture
     * state, so if there is some set up we have to bail.
@@ -134,11 +135,11 @@ intel_texture_drawpixels(GLcontext * ctx,
    _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    _mesa_TexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-   /*
-   _mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
-   _mesa_TexEnvf(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
-   */
-   _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, format,
+   if (type == GL_ALPHA)
+      internalFormat = GL_ALPHA;
+   else
+      internalFormat = GL_RGBA;
+   _mesa_TexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format,
 		    type, pixels);
 
    intel_meta_set_passthrough_transform(intel);