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i915: Fix GL_TEXTURE_MAX_LEVEL support (piglit levelclamp test).

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This commit is contained in:
Eric Anholt 2009-12-18 16:57:23 -08:00
parent b51e0fafdf
commit 6785d6741d
1 changed files with 6 additions and 1 deletions
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7
src/mesa/drivers/dri/i915/i915_texstate.c
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@ -138,6 +138,7 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
GLuint *state = i915->state.Tex[unit], format, pitch;
GLint lodbias, aniso = 0;
GLubyte border[4];
GLfloat maxlod;
memset(state, 0, sizeof(state));
@ -195,10 +196,14 @@ i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
}
/* We get one field with fraction bits to cover the maximum addressable (smallest
* resolution) LOD. Use it to cover both MAX_LEVEL and MAX_LOD.
*/
maxlod = MIN2(tObj->MaxLod, tObj->MaxLevel - tObj->BaseLevel);
state[I915_TEXREG_MS4] =
((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
MS4_CUBE_FACE_ENA_MASK |
(U_FIXED(CLAMP(tObj->MaxLod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
(U_FIXED(CLAMP(maxlod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));