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braodcom/vc5: Find the actual first TF output for our TF spec.

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This doesn't yet support PSIZ, but gets us at least some of TF working.
This commit is contained in:
Eric Anholt 2017-10-02 12:20:35 -07:00
parent bd94f6821e
commit f4133865d1
1 changed files with 6 additions and 1 deletions
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7
src/gallium/drivers/vc5/vc5_program.c
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@ -100,7 +100,12 @@ vc5_set_transform_feedback_outputs(struct vc5_uncompiled_shader *so,
continue;
struct V3D33_TRANSFORM_FEEDBACK_OUTPUT_DATA_SPEC unpacked = {
.first_shaded_vertex_value_to_output = vpm_start,
/* We need the offset from the coordinate shader's VPM
* output block, which has the [X, Y, Z, W, Xs, Ys]
* values at the start. Note that this will need some
* shifting when PSIZ is also present.
*/
.first_shaded_vertex_value_to_output = vpm_start + 6,
.number_of_consecutive_vertex_values_to_output_as_32_bit_values_minus_1 = vpm_size - 1,
.output_buffer_to_write_to = buffer,
};