Antialiasing Test Descriptions

5

This chapter describes the Antialiasing test programs. The following is defined for each test program:

• Name of the test program
• Test types (See the section, "Denizen Test Types" on page 2 for the different test types.)
• Description of the test program
• Attributes tested by the program
• Operators tested by the program
• Output from the test program

· aa_line

Test Types:	RGB, CM
Description:	Sets the line style to antialiased and filter width. Draws 3D lines in various angles.

Attributes Tested: XGL_CTX_LINE_AA_BLEND_EQ

                    XGL_CTX_LINE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multipolyline
Output:             Antialiased lines drawn like the spokes of a bicycle wheel.

· aa_line_alt_patterned

Test Types:	RGB, CM
Description:	Sets the line style to alt-patterned, antialiased and filter width. Draws 3D lines in various angles for six different line patterns.

Attributes Tested: XGL_CTX_LINE_STYLE

Operators Tested: xgl_object_set

Output:· aa_line_alt_patterned_interp	Antialiased alt-patterned lines drawn for six different patterns. Lines are drawn like the spokes of a bicycle wheel for each line pattern.
Test Types:	RGB, CM
Description:	Sets the line style to alt-patterned, line color interpolation, antialiased, and filter width. Draws 3D lines in various angles for six different line patterns.

Attributes Tested: XGL_3D_CTX_LINE_COLOR_INTERP

                    XGL_CTX_LINE_STYLE
                    XGL_CTX_LINE_AA_BLEND_EQ
                    XGL_CTX_LINE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multipolyline
Output:             Antialiased alt-patterned color interpolated lines drawn

for six different patterns. Lines are drawn like the spokes of a bicycle wheel for each line pattern.

· aa_line_blend_draw_mode

Test Types:	RGB, CM
Description:	Sets HLHSR, line color, and surface color. Sets non-blending, draws a polygon and two antialiased lines, then draws two non-antialiased lines. Sets blending to blended and repeats drawing the polygon and lines. Sets blending to all and repeats drawing.

Attributes Tested: XGL_3D_CTX_HLHSR_MODE

                    XGL_3D_CTX_BLEND_DRAW_MODE
                    XGL_CTX_LINE_AA_BLEND_EQ
                    XGL_CTX_LINE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multipolyline
                    xgl_polygon
Output:             A polygon and two non-antialiased lines are drawn on the

top left corner, and two antialised lines on the top right corner. These are repeated on the bottom left corner. The bottom right corner is blank.

· aa_line_blend_eq

Test Types:	RGB, CM
Description:	For-loop the three line antialiasing blending cases: arbitrary background, constant background, and add to background. Draws antialiased lines in various angles. Draws a polygon. Draws antialiased and non-antialiased lines across the polygon for each blending case.

Attributes Tested: XGL_CTX_LINE_COLOR

Operators Tested: xgl_object_set

Output:· aa_line_interp	Three sets of spokes of bicycle wheels drawn with antialiased lines in the top half of the canvas and three sets of polygons, antialiased and non-antialiased lines across them in the bottom half.
Test Types:	RGB, CM
Description:	Sets the vertex colors. Sets color interpolation and antialiasing blending, then draws lines in various angles.

Attributes Tested: XGL_3D_CTX_LINE_COLOR_INTERP

XGL_CTX_LINE_AA_BLEND_EQ
XGL_CTX_LINE_AA_FILTER_WIDTH

Operators Tested: xgl_multipolyline

Output:· aa_line_patterned	Antialiased color interpolated lines drawn like the spokes of a bicycle wheel; red at the center and blue at the rim.
Test Types:	RGB, CM
Description:	Sets the line style to patterned, antialiasing blending, and filter width. Draws 3D lines in various angles for six different line patterns.

Attributes Tested: XGL_CTX_LINE_COLOR

                    XGL_CTX_LINE_STYLE
                    XGL_CTX_LINE_AA_BLEND_EQ
                    XGL_CTX_LINE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multipolyline
Output:             Antialiased patterned lines drawn for six different

patterns. Lines are drawn like the spokes of a bicycle wheel for each line pattern.

· aa_line_patterned_interp

Test Types:	RGB, CM
Description:	Sets the vertex colors. Sets color interpolation. Sets the line style to patterned, antialiasing blending, and filter width. Draws 3D lines in various angles for six different line patterns.

Attributes Tested: XGL_3D_CTX_LINE_COLOR_INTERP

                    XGL_CTX_LINE_STYLE
                    XGL_CTX_LINE_PATTERN
                    XGL_CTX_LINE_AA_BLEND_EQ,
                    XGL_CTX_LINE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multipolyline
Output:             Antialiased patterned color interpolated lines drawn for

six different patterns. Lines are drawn like the spokes of a bicycle wheel for each line pattern.

· aa_marker

Test Types:	RGB, CM
Description:	Sets the antialiasing blending and filter width. Sets point colors. For loop three different marker scale factors, and eight markers to draw markers.

Attributes Tested: XGL_CTX_MARKER_AA_BLEND_EQ,

                    XGL_CTX_MARKER_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multimarker
Output:             Draws two sets (red and green) of eight antialised markers
                    in different scales.

· aa_mspg_edge

Test Types:	RGB, CM
Description:	Sets surface transparency method, and blending equation. Sets blending mode to not blend. Draws opaque simple polygons and then draws transparent simple polygons. Sets blending mode to blend and draws opaque and transparent simple polygons. Repeats the above with edges on.

Attributes Tested: XGL_3D_CTX_SURF_TRANSP_METHOD

                    XGL_3D_CTX_SURF_TRANSP_BLEND_EQ,
                    XGL_3D_CTX_BLEND_DRAW_MODE
                    XGL_3D_CTX_SURF_FRONT_TRANSP
                    XGL_CTX_SURF_EDGE_FLAG
                    XGL_CTX_EDGE_COLOR
                    XGL_CTX_EDGE_AA_BLEND_EQ
                    XGL_CTX_EDGE_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_multi_simple_polygon
Output:             Two solid blue squares in the top left portion of the

canvas, two dark green blended squares in the top right, two solid blue squares in the bottom left, and two hollow and two dark green blended squares with edges on in the bottom right are drawn. Note that no edges are drawn for the squares in the bottom left.

· aa_mspg_hollow

Test Types:	RGB, CM
Description:	Sets HLHSR. Sets surface fill to hollow. Sets surface antialiasing blending equation and filter width. Sets blending mode to none and draws two sets of multi-simple polygons. Sets blending mode to blended and draws polygons. Sets blending mode to blend all and draws polygons.

Attributes Tested: XGL_CTX_SURF_FRONT_FILL_STYLE

                    XGL_CTX_SURF_AA_BLEND_EQ
                    XGL_CTX_SURF_AA_FILTER_WIDTH
                    XGL_3D_CTX_BLEND_DRAW_MODE
Operators Tested:   xgl_object_set
                    xgl_multi_simple_polygon
Output:             Two sets of blue and green antialiased hollow squares are

drawn in the top left and bottom portions of the canvas. Nothing is drawn in the top right. The bottom right is blank.

· aa_stroketext

Test Types:	RGB, CM
Description:	Sets the character height and character color. Sets the stroke text antialiasing blending equation and filter width. Draws stroke text.

Attributes Tested: XGL_CTX_STEXT_AA_BLEND_EQ

                    XGL_CTX_STEXT_AA_FILTER_WIDTH
Operators Tested:   xgl_object_set
                    xgl_stroke_text_3d
Output:             Antialiased stroke text

ABCDEFGHIJKLMNOPQRSTUVWXYZ\nabcdefghijklm nopqrstuvwxyz\n0123456789 are drawn on the canvas.