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gallium/util: implement new color clear API in u_blitter

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This commit is contained in:
Marek Olšák 2013-12-04 12:14:14 +01:00
parent f09de87735
commit be909274aa
1 changed files with 42 additions and 3 deletions
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45
src/gallium/auxiliary/util/u_blitter.c
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@ -51,6 +51,9 @@
#define INVALID_PTR ((void*)~0)
#define GET_CLEAR_BLEND_STATE_IDX(clear_buffers) \
((clear_buffers) / PIPE_CLEAR_COLOR0)
struct blitter_context_priv
{
struct blitter_context base;
@ -90,6 +93,7 @@ struct blitter_context_priv
/* Blend state. */
void *blend[PIPE_MASK_RGBA+1]; /**< blend state with writemask */
void *blend_clear[GET_CLEAR_BLEND_STATE_IDX(PIPE_CLEAR_COLOR)+1];
/* Depth stencil alpha state. */
void *dsa_write_depth_stencil;
@ -335,6 +339,10 @@ void util_blitter_destroy(struct blitter_context *blitter)
for (i = 0; i <= PIPE_MASK_RGBA; i++) {
pipe->delete_blend_state(pipe, ctx->blend[i]);
}
for (i = 0; i < Elements(ctx->blend_clear); i++) {
if (ctx->blend_clear[i])
pipe->delete_blend_state(pipe, ctx->blend_clear[i]);
}
pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_stencil);
pipe->delete_depth_stencil_alpha_state(pipe,
ctx->dsa_write_depth_keep_stencil);
@ -965,6 +973,39 @@ void util_blitter_draw_rectangle(struct blitter_context *blitter,
blitter_draw(ctx, x1, y1, x2, y2, depth, 1);
}
static void *get_clear_blend_state(struct blitter_context_priv *ctx,
unsigned clear_buffers)
{
struct pipe_context *pipe = ctx->base.pipe;
int index;
clear_buffers &= PIPE_CLEAR_COLOR;
/* Return an existing blend state. */
if (!clear_buffers)
return ctx->blend[0];
index = GET_CLEAR_BLEND_STATE_IDX(clear_buffers);
if (ctx->blend_clear[index])
return ctx->blend_clear[index];
/* Create a new one. */
{
struct pipe_blend_state blend = {0};
blend.independent_blend_enable = 1;
for (int i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
if (clear_buffers & (PIPE_CLEAR_COLOR0 << i)) {
blend.rt[i].colormask = PIPE_MASK_RGBA;
}
}
ctx->blend_clear[index] = pipe->create_blend_state(pipe, &blend);
}
return ctx->blend_clear[index];
}
static void util_blitter_clear_custom(struct blitter_context *blitter,
unsigned width, unsigned height,
unsigned num_layers,
@ -987,10 +1028,8 @@ static void util_blitter_clear_custom(struct blitter_context *blitter,
/* bind states */
if (custom_blend) {
pipe->bind_blend_state(pipe, custom_blend);
} else if (clear_buffers & PIPE_CLEAR_COLOR) {
pipe->bind_blend_state(pipe, ctx->blend[PIPE_MASK_RGBA]);
} else {
pipe->bind_blend_state(pipe, ctx->blend[0]);
pipe->bind_blend_state(pipe, get_clear_blend_state(ctx, clear_buffers));
}
if (custom_dsa) {