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r600/shader: reserve first register of vertex shader.

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r0 in input into vertex shaders contains things like vertexid,
we need to reserve it even if we have no inputs.

This fixes a bunch of tessellation piglits.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 50330d7115)
This commit is contained in:
Dave Airlie 2017-11-13 13:05:25 +10:00 • committed by Emil Velikov
parent a240fd6d13
commit 55bc1d0a19
1 changed files with 4 additions and 2 deletions
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6
src/gallium/drivers/r600/r600_shader.c
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@ -3031,9 +3031,11 @@ static int r600_shader_from_tgsi(struct r600_context *rctx,
ctx.file_offset[i] = 0;
}
if (ctx.type == PIPE_SHADER_VERTEX && ctx.info.num_inputs) {
if (ctx.type == PIPE_SHADER_VERTEX) {
ctx.file_offset[TGSI_FILE_INPUT] = 1;
r600_bytecode_add_cfinst(ctx.bc, CF_OP_CALL_FS);
if (ctx.info.num_inputs)
r600_bytecode_add_cfinst(ctx.bc, CF_OP_CALL_FS);
}
if (ctx.type == PIPE_SHADER_FRAGMENT) {
if (ctx.bc->chip_class >= EVERGREEN)