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draw: Don't define the last two mipmap levels in aa lines.

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Some hardware needs to make a seperate copy of all levels to obey
max_lod, so simply do not define the last two levels instead of
clamping.
This commit is contained in:
José Fonseca 2011-02-14 10:36:07 +00:00
parent 9305e93114
commit 07eb660fc9
1 changed files with 12 additions and 6 deletions
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18
src/gallium/auxiliary/draw/draw_pipe_aaline.c
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@ -55,9 +55,16 @@
/**
* Max texture level for the alpha texture used for antialiasing
* Size for the alpha texture used for antialiasing
*/
#define MAX_TEXTURE_LEVEL 5 /* 32 x 32 */
#define TEXTURE_SIZE_LOG2 5 /* 32 x 32 */
/**
* Max texture level for the alpha texture used for antialiasing
*
* Don't use the 1x1 and 2x2 mipmap levels.
*/
#define MAX_TEXTURE_LEVEL (TEXTURE_SIZE_LOG2 - 2)
/**
@ -403,8 +410,8 @@ aaline_create_texture(struct aaline_stage *aaline)
texTemp.target = PIPE_TEXTURE_2D;
texTemp.format = PIPE_FORMAT_A8_UNORM; /* XXX verify supported by driver! */
texTemp.last_level = MAX_TEXTURE_LEVEL;
texTemp.width0 = 1 << MAX_TEXTURE_LEVEL;
texTemp.height0 = 1 << MAX_TEXTURE_LEVEL;
texTemp.width0 = 1 << TEXTURE_SIZE_LOG2;
texTemp.height0 = 1 << TEXTURE_SIZE_LOG2;
texTemp.depth0 = 1;
texTemp.array_size = 1;
texTemp.bind = PIPE_BIND_SAMPLER_VIEW;
@ -498,8 +505,7 @@ aaline_create_sampler(struct aaline_stage *aaline)
sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
sampler.normalized_coords = 1;
sampler.min_lod = 0.0f;
/* avoid using the 1x1 and 2x2 mipmap levels */
sampler.max_lod = MAX_TEXTURE_LEVEL - 2;
sampler.max_lod = MAX_TEXTURE_LEVEL;
aaline->sampler_cso = pipe->create_sampler_state(pipe, &sampler);
if (aaline->sampler_cso == NULL)