[Bug 24453] New: [G33] Most scalers (GLSL) in openmsx fail or produce broken results

[<bug...@fr...>]

http://bugs.freedesktop.org/show_bug.cgi?id=24453

           Summary: [G33] Most scalers (GLSL) in openmsx fail or produce
                    broken results
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i915
        AssignedTo: dri...@li...
        ReportedBy: se...@me...


Ubuntu 9.10 Beta (x86-64) with xorg-edgers apt source
DG33TL motherboard

Steps to reproduce:
1) Install openmsx (0.7.0 will do, early will most likely fail too
2) Run and press F10 to open console
3) First command:
set renderer SDLGL-PP

Now there are various scalers (using GLSL) which can be selected using

set scale_algorithm name

name is one of: RGBtriplet SaI ScaleNx TV hq hqlite simple

RGBtriplet
work correctly

SaI
Incorrect results

ScaleNx 
i915_program_error: Unsupported opcode: IF

TV
i915_program_error: Exceeded max instructions

hq
incorrect results

hqlite
incorrect results

simple
works correctly (no shader)

The correct results should be visible by selecting non-GL renderer:

set renderer SDL


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