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drm/i915: Avoid double multiplication of linear alpha.

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This commit is contained in:
Chris Wilson 2010-03-03 20:06:08 +00:00
parent cdaef58c19
commit 1f2daf6524
1 changed files with 2 additions and 6 deletions
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8
src/drm/cairo-drm-i915-shader.c
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@ -640,7 +640,7 @@ i915_set_shader_program (i915_device_t *device,
/* XXX can we defer premultiplication? */
i915_fs_mul (out_reg,
i915_fs_operand_reg (FS_U3),
i915_fs_operand (FS_U3, W, W, W, W));
i915_fs_operand (FS_U3, W, W, W, ONE));
constant_offset += 2;
texture_offset += 1;
@ -711,11 +711,7 @@ i915_set_shader_program (i915_device_t *device,
FS_T0 + texture_offset, /* input */
FS_C0 + constant_offset,
FS_C0 + constant_offset + 1, /* colour ramp */
FS_U3); /* unpremultiplied output */
i915_fs_mul (FS_R1,
i915_fs_operand_reg (FS_U3),
i915_fs_operand (source_reg, W, W, W, W));
FS_R1); /* unpremultiplied output */
constant_offset += 2;
texture_offset += 1;
mask_reg = FS_R1;