diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r300_state.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c index a86e4bc344..55d3d55e90 100644 --- a/src/mesa/drivers/dri/r300/r300_state.c +++ b/src/mesa/drivers/dri/r300/r300_state.c @@ -1381,6 +1381,18 @@ static void r500SetupFragmentShaderTextures(GLcontext *ctx, int *tmu_mappings) } } +static GLuint r300CalculateTexLodBias(GLfloat bias) +{ + GLuint b; + b = (unsigned int)fabsf(ceilf(bias*31)); + if (signbit(bias)) { + b ^= 0x3ff; /* 10 bits */ + } + b <<= 3; + b &= R300_LOD_BIAS_MASK; + return b; +} + static void r300SetupTextures(GLcontext * ctx) { int i, mtu; @@ -1444,7 +1456,8 @@ static void r300SetupTextures(GLcontext * ctx) r300->hw.tex.filter.cmd[R300_TEX_VALUE_0 + hw_tmu] = gen_fixed_filter(t->filter) | (hw_tmu << 28); - r300->hw.tex.filter_1.cmd[R300_TEX_VALUE_0 + hw_tmu] = t->filter_1; + r300->hw.tex.filter_1.cmd[R300_TEX_VALUE_0 + hw_tmu] = t->filter_1 + | r300CalculateTexLodBias(r300->LODBias); r300->hw.tex.size.cmd[R300_TEX_VALUE_0 + hw_tmu] = t->size; r300->hw.tex.format.cmd[R300_TEX_VALUE_0 + |