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u_blitter: add draw_rectangle callback which can be overridden by a driver

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This commit is contained in:
Marek Olšák 2010-07-12 06:32:50 +02:00
parent 749e24521a
commit 9be8f7d226
2 changed files with 104 additions and 19 deletions
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86
src/gallium/auxiliary/util/u_blitter.c
View file

@ -107,6 +107,14 @@ struct blitter_context_priv
unsigned dst_height;
};
static void blitter_draw_rectangle(struct blitter_context *blitter,
unsigned x, unsigned y,
unsigned width, unsigned height,
float depth,
enum blitter_attrib_type type,
const float attrib[4]);
struct blitter_context *util_blitter_create(struct pipe_context *pipe)
{
struct blitter_context_priv *ctx;
@ -122,6 +130,7 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe)
return NULL;
ctx->base.pipe = pipe;
ctx->base.draw_rectangle = blitter_draw_rectangle;
/* init state objects for them to be considered invalid */
ctx->base.saved_blend_state = INVALID_PTR;
@ -604,6 +613,31 @@ void *blitter_get_fs_texfetch_depth(struct blitter_context_priv *ctx,
return ctx->fs_texfetch_depth[tex_target];
}
static void blitter_draw_rectangle(struct blitter_context *blitter,
unsigned x1, unsigned y1,
unsigned x2, unsigned y2,
float depth,
enum blitter_attrib_type type,
const float attrib[4])
{
struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter;
switch (type) {
case UTIL_BLITTER_ATTRIB_COLOR:
blitter_set_clear_color(ctx, attrib);
break;
case UTIL_BLITTER_ATTRIB_TEXCOORD:
set_texcoords_in_vertices(attrib, &ctx->vertices[0][1][0], 8);
break;
default:;
}
blitter_set_rectangle(ctx, x1, y1, x2, y2, depth);
blitter_draw_quad(ctx);
}
void util_blitter_clear(struct blitter_context *blitter,
unsigned width, unsigned height,
unsigned num_cbufs,
@ -647,9 +681,8 @@ void util_blitter_clear(struct blitter_context *blitter,
pipe->bind_vs_state(pipe, ctx->vs_col);
blitter_set_dst_dimensions(ctx, width, height);
blitter_set_clear_color(ctx, rgba);
blitter_set_rectangle(ctx, 0, 0, width, height, depth);
blitter_draw_quad(ctx);
blitter->draw_rectangle(blitter, 0, 0, width, height, depth,
UTIL_BLITTER_ATTRIB_COLOR, rgba);
blitter_restore_CSOs(ctx);
}
@ -762,29 +795,45 @@ void util_blitter_copy_region(struct blitter_context *blitter,
pipe->set_fragment_sampler_views(pipe, 1, &view);
pipe->set_framebuffer_state(pipe, &fb_state);
/* Set texture coordinates. */
blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
switch (src->target) {
/* Draw the quad with the draw_rectangle callback. */
case PIPE_TEXTURE_1D:
case PIPE_TEXTURE_2D:
blitter_set_texcoords_2d(ctx, src, subsrc,
srcx, srcy, srcx+width, srcy+height);
{
/* Set texture coordinates. */
float coord[4];
get_normalized_texcoords(src, subsrc, srcx, srcy,
srcx+width, srcy+height, coord);
/* Draw. */
blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, 0,
UTIL_BLITTER_ATTRIB_TEXCOORD, coord);
}
break;
/* Draw the quad with the generic codepath. */
case PIPE_TEXTURE_3D:
blitter_set_texcoords_3d(ctx, src, subsrc, srcz,
srcx, srcy, srcx+width, srcy+height);
break;
case PIPE_TEXTURE_CUBE:
blitter_set_texcoords_cube(ctx, src, subsrc,
srcx, srcy, srcx+width, srcy+height);
/* Set texture coordinates. */
if (src->target == PIPE_TEXTURE_3D)
blitter_set_texcoords_3d(ctx, src, subsrc, srcz,
srcx, srcy, srcx+width, srcy+height);
else
blitter_set_texcoords_cube(ctx, src, subsrc,
srcx, srcy, srcx+width, srcy+height);
/* Draw. */
blitter_set_rectangle(ctx, dstx, dsty, dstx+width, dsty+height, 0);
blitter_draw_quad(ctx);
break;
default:
assert(0);
return;
}
blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
blitter_set_rectangle(ctx, dstx, dsty, dstx+width, dsty+height, 0);
blitter_draw_quad(ctx);
blitter_restore_CSOs(ctx);
pipe_surface_reference(&dstsurf, NULL);
@ -827,9 +876,8 @@ void util_blitter_clear_render_target(struct blitter_context *blitter,
pipe->set_framebuffer_state(pipe, &fb_state);
blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
blitter_set_clear_color(ctx, rgba);
blitter_set_rectangle(ctx, dstx, dsty, dstx+width, dsty+height, 0);
blitter_draw_quad(ctx);
blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, 0,
UTIL_BLITTER_ATTRIB_COLOR, rgba);
blitter_restore_CSOs(ctx);
}
@ -888,7 +936,7 @@ void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
pipe->set_framebuffer_state(pipe, &fb_state);
blitter_set_dst_dimensions(ctx, dstsurf->width, dstsurf->height);
blitter_set_rectangle(ctx, dstx, dsty, dstx+width, dsty+height, depth);
blitter_draw_quad(ctx);
blitter->draw_rectangle(blitter, dstx, dsty, dstx+width, dsty+height, depth,
UTIL_BLITTER_ATTRIB_NONE, NULL);
blitter_restore_CSOs(ctx);
}

37
src/gallium/auxiliary/util/u_blitter.h
View file

@ -39,8 +39,45 @@ extern "C" {
struct pipe_context;
enum blitter_attrib_type {
UTIL_BLITTER_ATTRIB_NONE,
UTIL_BLITTER_ATTRIB_COLOR,
UTIL_BLITTER_ATTRIB_TEXCOORD
};
struct blitter_context
{
/**
* Draw a rectangle.
*
* \param x1 An X coordinate of the top-left corner.
* \param y1 A Y coordinate of the top-left corner.
* \param x2 An X coordinate of the bottom-right corner.
* \param y2 A Y coordinate of the bottom-right corner.
* \param depth A depth which the rectangle is rendered at.
*
* \param type Semantics of the attributes "attrib".
* If type is UTIL_BLITTER_ATTRIB_NONE, ignore them.
* If type is UTIL_BLITTER_ATTRIB_COLOR, the attributes
* make up a constant RGBA color, and should go to the COLOR0
* varying slot of a fragment shader.
* If type is UTIL_BLITTER_ATTRIB_TEXCOORD, {a1, a2} and
* {a3, a4} specify top-left and bottom-right texture
* coordinates of the rectangle, respectively, and should go
* to the GENERIC0 varying slot of a fragment shader.
*
* \param attrib See type.
*
* \note A driver may optionally override this callback to implement
* a specialized hardware path for drawing a rectangle, e.g. using
* a rectangular point sprite.
*/
void (*draw_rectangle)(struct blitter_context *blitter,
unsigned x1, unsigned y1, unsigned x2, unsigned y2,
float depth,
enum blitter_attrib_type type,
const float attrib[4]);
/* Private members, really. */
struct pipe_context *pipe; /**< pipe context */