mesa: refactor: new _mesa_init_pixelstore() function

(cherry picked from commit 5f91007f99)

src/mesa/main/context.c

@@ -106,6 +106,7 @@
 #include "macros.h"
 #include "matrix.h"
 #include "pixel.h"
+#include "pixelstore.h"
 #include "points.h"
 #include "polygon.h"
 #include "queryobj.h"
@@ -995,6 +996,7 @@ init_attrib_groups(GLcontext *ctx)
    _mesa_init_matrix( ctx );
    _mesa_init_multisample( ctx );
    _mesa_init_pixel( ctx );
+   _mesa_init_pixelstore( ctx );
    _mesa_init_point( ctx );
    _mesa_init_polygon( ctx );
    _mesa_init_program( ctx );

src/mesa/main/pixel.c

@@ -1306,34 +1306,6 @@ _mesa_init_pixel( GLcontext *ctx )
    ASSIGN_4V(ctx->Pixel.TextureColorTableScale, 1.0, 1.0, 1.0, 1.0);
    ASSIGN_4V(ctx->Pixel.TextureColorTableBias, 0.0, 0.0, 0.0, 0.0);
 
-   /* Pixel transfer */
-   ctx->Pack.Alignment = 4;
-   ctx->Pack.RowLength = 0;
-   ctx->Pack.ImageHeight = 0;
-   ctx->Pack.SkipPixels = 0;
-   ctx->Pack.SkipRows = 0;
-   ctx->Pack.SkipImages = 0;
-   ctx->Pack.SwapBytes = GL_FALSE;
-   ctx->Pack.LsbFirst = GL_FALSE;
-   ctx->Pack.ClientStorage = GL_FALSE;
-   ctx->Pack.Invert = GL_FALSE;
-#if FEATURE_EXT_pixel_buffer_object
-   ctx->Pack.BufferObj = ctx->Array.NullBufferObj;
-#endif
-   ctx->Unpack.Alignment = 4;
-   ctx->Unpack.RowLength = 0;
-   ctx->Unpack.ImageHeight = 0;
-   ctx->Unpack.SkipPixels = 0;
-   ctx->Unpack.SkipRows = 0;
-   ctx->Unpack.SkipImages = 0;
-   ctx->Unpack.SwapBytes = GL_FALSE;
-   ctx->Unpack.LsbFirst = GL_FALSE;
-   ctx->Unpack.ClientStorage = GL_FALSE;
-   ctx->Unpack.Invert = GL_FALSE;
-#if FEATURE_EXT_pixel_buffer_object
-   ctx->Unpack.BufferObj = ctx->Array.NullBufferObj;
-#endif
-
    /*
     * _mesa_unpack_image() returns image data in this format.  When we
     * execute image commands (glDrawPixels(), glTexImage(), etc) from

src/mesa/main/pixelstore.c

@@ -224,3 +224,40 @@ _mesa_PixelStoref( GLenum pname, GLfloat param )
 {
    _mesa_PixelStorei( pname, (GLint) param );
 }
+
+
+
+/**
+ * Initialize the context's pixel store state.
+ */
+void
+_mesa_init_pixelstore( GLcontext *ctx )
+{
+   /* Pixel transfer */
+   ctx->Pack.Alignment = 4;
+   ctx->Pack.RowLength = 0;
+   ctx->Pack.ImageHeight = 0;
+   ctx->Pack.SkipPixels = 0;
+   ctx->Pack.SkipRows = 0;
+   ctx->Pack.SkipImages = 0;
+   ctx->Pack.SwapBytes = GL_FALSE;
+   ctx->Pack.LsbFirst = GL_FALSE;
+   ctx->Pack.ClientStorage = GL_FALSE;
+   ctx->Pack.Invert = GL_FALSE;
+#if FEATURE_EXT_pixel_buffer_object
+   ctx->Pack.BufferObj = ctx->Array.NullBufferObj;
+#endif
+   ctx->Unpack.Alignment = 4;
+   ctx->Unpack.RowLength = 0;
+   ctx->Unpack.ImageHeight = 0;
+   ctx->Unpack.SkipPixels = 0;
+   ctx->Unpack.SkipRows = 0;
+   ctx->Unpack.SkipImages = 0;
+   ctx->Unpack.SwapBytes = GL_FALSE;
+   ctx->Unpack.LsbFirst = GL_FALSE;
+   ctx->Unpack.ClientStorage = GL_FALSE;
+   ctx->Unpack.Invert = GL_FALSE;
+#if FEATURE_EXT_pixel_buffer_object
+   ctx->Unpack.BufferObj = ctx->Array.NullBufferObj;
+#endif
+}

src/mesa/main/pixelstore.h

@@ -43,4 +43,8 @@ extern void GLAPIENTRY
 _mesa_PixelStoref( GLenum pname, GLfloat param );
 
 
+extern void
+_mesa_init_pixelstore( GLcontext *ctx );
+
+
 #endif