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i965/vs: Add support for GL_FIXED attributes. 

Fixes arb_es2_compatibility-fixed-type
This commit is contained in:
Eric Anholt 2011-08-10 11:38:42 -07:00
parent aed5e353e9
commit 072d64121e
1 changed files with 12 additions and 0 deletions
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12
src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
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@ -42,6 +42,18 @@ vec4_visitor::setup_attributes(int payload_reg)
if (prog_data->inputs_read & BITFIELD64_BIT(i)) {
attribute_map[i] = payload_reg + nr_attributes;
nr_attributes++;
/* Do GL_FIXED rescaling for GLES2.0. Our GL_FIXED
* attributes come in as floating point conversions of the
* integer values.
*/
if (c->key.gl_fixed_input_size[i] != 0) {
struct brw_reg reg = brw_vec8_grf(attribute_map[i], 0);
brw_MUL(p,
brw_writemask(reg, (1 << c->key.gl_fixed_input_size[i]) - 1),
reg, brw_imm_f(1.0 / 65536.0));
}
}
}