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Texture_projective_2D

Description
Tests 2D projective texturing (STAGE_2D_PROJECTIVE / PS_TEXTUREMODES_PROJECTIVE2D) with explicit Q coordinate interpolation across quads and triangles.
Suite class def
src/tests/texture_projective_2d_tests.h

ExplicitQ_HorizontalCross_Bitri

Evaluates the horizontal zero-crossing test triangulated as two triangles.

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ExplicitQ_HorizontalCross_Quad

Evaluates projective coordinate division across a horizontal zero-crossing on a quad:

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ExplicitQ_MixedCorners_Bitri

Evaluates the mixed corner Q configuration triangulated as two triangles.

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ExplicitQ_MixedCorners_Quad

Evaluates projective coordinate division on a quad with mixed corner Q values:

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ExplicitQ_NegativeGradient_Bitri

Evaluates the all-negative Q gradient triangulated as two triangles.

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ExplicitQ_NegativeGradient_Quad

Evaluates projective division with all-negative Q gradient (q in [-0.25, -2.0]):

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ExplicitQ_OpposingCorners_Bitri

Evaluates the saddle-shaped Q surface triangulated as two triangles.

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ExplicitQ_OpposingCorners_Quad

Evaluates projective coordinate division on a saddle-shaped Q surface:

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ExplicitQ_PositiveGradient_Bitri

Evaluates the all-positive Q gradient triangulated as two triangles.

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ExplicitQ_PositiveGradient_Quad

Evaluates projective division with all-positive Q gradient (q in [0.25, 2.0]):

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ExplicitQ_UniformSigns

Evaluates constant Q values across 5 quads per wrap mode:

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ExplicitQ_VerticalCross_Bitri

Evaluates the vertical zero-crossing test triangulated as two triangles.

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ExplicitQ_VerticalCross_Quad

Evaluates projective coordinate division across a vertical zero-crossing on a quad:

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ExplicitQ_ZeroCorner_Bitri

Evaluates the single zero corner configuration triangulated as two triangles.

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ExplicitQ_ZeroCorner_Quad

Evaluates projective division with three corners at q = 1.0 and BL corner at q = 0.0:

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