renderer: swizzle sampler border color channel if we emulate alpha format

Fixes:
dEQP-GLES31.functional.texture.border_clamp.formats.alpha.nearest_size_pot
dEQP-GLES31.functional.texture.border_clamp.formats.alpha.nearest_size_npot
dEQP-GLES31.functional.texture.border_clamp.formats.alpha.linear_size_pot
dEQP-GLES31.functional.texture.border_clamp.formats.alpha.linear_size_npot
dEQP-GLES31.functional.texture.border_clamp.unused_channels.alpha

Signed-off-by: Elie Tournier <elie.tournier@collabora.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
macos/master
Elie Tournier 6 years ago committed by Dave Airlie
parent 29853b7456
commit 73423fff6b
  1. 12
      src/vrend_renderer.c

@ -4173,7 +4173,19 @@ static void vrend_apply_sampler_state(struct vrend_context *ctx,
return;
}
/*
* If we emulate alpha format with red, we need to tell
* the sampler to use the red channel and not the alpha one
* by swizzling the GL_TEXTURE_BORDER_COLOR parameter.
*/
if (vrend_state.have_samplers) {
if (vrend_format_is_emulated_alpha(res->base.format)) {
union pipe_color_union border_color;
border_color = vstate->base.border_color;
border_color.ui[0] = border_color.ui[3];
border_color.ui[3] = 0;
glSamplerParameterIuiv(vstate->id, GL_TEXTURE_BORDER_COLOR, border_color.ui);
}
glBindSampler(sampler_id, vstate->id);
glSamplerParameteri(vstate->id, GL_TEXTURE_SRGB_DECODE_EXT,
srgb_decode);

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