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glsl: Correctly load columns of a row-major matrix

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For a row-major matrix, the next column starts at the next element.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x3
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.9

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Ian Romanick 2014-07-15 19:59:18 -07:00
parent 7f731340d2
commit ab7098c8df
1 changed files with 11 additions and 4 deletions
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15
src/glsl/lower_ubo_reference.cpp
View file

@ -355,10 +355,17 @@ lower_ubo_reference_visitor::emit_ubo_loads(ir_dereference *deref,
new(mem_ctx) ir_dereference_array(deref->clone(mem_ctx, NULL),
col);
/* std140 always rounds the stride of arrays (and matrices)
* to a vec4, so matrices are always 16 between columns/rows.
*/
emit_ubo_loads(col_deref, base_offset, deref_offset + i * 16);
if (ubo_var->RowMajor) {
/* For a row-major matrix, the next column starts at the next
* element.
*/
emit_ubo_loads(col_deref, base_offset, deref_offset + i * 4);
} else {
/* std140 always rounds the stride of arrays (and matrices) to a
* vec4, so matrices are always 16 between columns/rows.
*/
emit_ubo_loads(col_deref, base_offset, deref_offset + i * 16);
}
}
return;
}