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gallium/u_blitter: set a more sane viewport-state

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This actually corresponds to legal GL depth-ranges, because depth-clear
values are always in the 0..1 range in OpenGL.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Erik Faye-Lund 2019-07-15 14:44:48 +02:00
parent 4857d695f5
commit 26c6640835
1 changed files with 5 additions and 6 deletions
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11
src/gallium/auxiliary/util/u_blitter.c
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@ -334,8 +334,10 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe)
pipe->screen->get_param(pipe->screen, PIPE_CAP_TGSI_VS_LAYER_VIEWPORT);
/* set invariant vertex coordinates */
for (i = 0; i < 4; i++)
for (i = 0; i < 4; i++) {
ctx->vertices[i][0][2] = 0; /*v.z*/
ctx->vertices[i][0][3] = 1; /*v.w*/
}
return &ctx->base;
}
@ -806,17 +808,14 @@ static void blitter_set_rectangle(struct blitter_context_priv *ctx,
ctx->vertices[3][0][0] = (float)x1 / ctx->dst_width * 2.0f - 1.0f; /*v3.x*/
ctx->vertices[3][0][1] = (float)y2 / ctx->dst_height * 2.0f - 1.0f; /*v3.y*/
for (i = 0; i < 4; i++)
ctx->vertices[i][0][2] = depth; /*z*/
/* viewport */
struct pipe_viewport_state viewport;
viewport.scale[0] = 0.5f * ctx->dst_width;
viewport.scale[1] = 0.5f * ctx->dst_height;
viewport.scale[2] = 1.0f;
viewport.scale[2] = 0.0f;
viewport.translate[0] = 0.5f * ctx->dst_width;
viewport.translate[1] = 0.5f * ctx->dst_height;
viewport.translate[2] = 0.0f;
viewport.translate[2] = depth;
ctx->base.pipe->set_viewport_states(ctx->base.pipe, 0, 1, &viewport);
}