diff options
author | Brian Paul <[email protected]> | 2009-08-05 14:13:48 -0600 |
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committer | Brian Paul <[email protected]> | 2009-08-05 14:13:48 -0600 |
commit | 1f713059934c2365a42aadfdca49213b36a7de90 (patch) | |
tree | e116f5f41dfde926be870dfc439a7dfbaa0ded06 /src/gallium | |
parent | 3905119b4743eb5d284236cc237ee2c19ae3c5c8 (diff) | |
parent | 5b3428d7453eec8e8a5344e22113774dea1dc456 (diff) |
Merge branch 'mesa_7_5_branch'
Conflicts:
src/mesa/main/state.c
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/auxiliary/util/u_blit.c | 80 |
1 files changed, 64 insertions, 16 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c index 414cf910254..f7cc7dd3759 100644 --- a/src/gallium/auxiliary/util/u_blit.c +++ b/src/gallium/auxiliary/util/u_blit.c @@ -155,7 +155,11 @@ util_destroy_blit(struct blit_state *ctx) } -static unsigned get_next_slot( struct blit_state *ctx ) +/** + * Get offset of next free slot in vertex buffer for quad vertices. + */ +static unsigned +get_next_slot( struct blit_state *ctx ) { const unsigned max_slots = 4096 / sizeof ctx->vertices; @@ -173,7 +177,6 @@ static unsigned get_next_slot( struct blit_state *ctx ) } - /** * Setup vertex data for the textured quad we'll draw. * Note: y=0=top @@ -260,9 +263,38 @@ setup_vertex_data_tex(struct blit_state *ctx, return offset; } + + +/** + * \return TRUE if two regions overlap, FALSE otherwise + */ +static boolean +regions_overlap(int srcX0, int srcY0, + int srcX1, int srcY1, + int dstX0, int dstY0, + int dstX1, int dstY1) +{ + if (MAX2(srcX0, srcX1) < MIN2(dstX0, dstX1)) + return FALSE; /* src completely left of dst */ + + if (MAX2(dstX0, dstX1) < MIN2(srcX0, srcX1)) + return FALSE; /* dst completely left of src */ + + if (MAX2(srcY0, srcY1) < MIN2(dstY0, dstY1)) + return FALSE; /* src completely above dst */ + + if (MAX2(dstY0, dstY1) < MIN2(srcY0, srcY1)) + return FALSE; /* dst completely above src */ + + return TRUE; /* some overlap */ +} + + /** * Copy pixel block from src surface to dst surface. * Overlapping regions are acceptable. + * Flipping and stretching are supported. + * XXX what about clipping??? * XXX need some control over blitting Z and/or stencil. */ void @@ -285,10 +317,40 @@ util_blit_pixels(struct blit_state *ctx, const int srcLeft = MIN2(srcX0, srcX1); const int srcTop = MIN2(srcY0, srcY1); unsigned offset; + boolean overlap; assert(filter == PIPE_TEX_MIPFILTER_NEAREST || filter == PIPE_TEX_MIPFILTER_LINEAR); + assert(screen->is_format_supported(screen, src->format, PIPE_TEXTURE_2D, + PIPE_TEXTURE_USAGE_SAMPLER, 0)); + assert(screen->is_format_supported(screen, dst->format, PIPE_TEXTURE_2D, + PIPE_TEXTURE_USAGE_SAMPLER, 0)); + + /* do the regions overlap? */ + overlap = (src == dst) && regions_overlap(srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1); + + /* + * Check for simple case: no format conversion, no flipping, no stretching, + * no overlapping. + */ + if (dst->format == src->format && + srcX0 < srcX1 && + dstX0 < dstX1 && + srcY0 < srcY1 && + dstY0 < dstY1 && + (dstX1 - dstX0) == (srcX1 - srcX0) && + (dstY1 - dstY0) == (srcY1 - srcY0) && + !overlap) { + /* FIXME: this will most surely fail for overlapping rectangles */ + pipe->surface_copy(pipe, + dst, dstX0, dstY0, /* dest */ + src, srcX0, srcY0, /* src */ + srcW, srcH); /* size */ + return; + } + if (srcLeft != srcX0) { /* left-right flip */ int tmp = dstX0; @@ -303,20 +365,6 @@ util_blit_pixels(struct blit_state *ctx, dstY1 = tmp; } - assert(screen->is_format_supported(screen, src->format, PIPE_TEXTURE_2D, - PIPE_TEXTURE_USAGE_SAMPLER, 0)); - assert(screen->is_format_supported(screen, dst->format, PIPE_TEXTURE_2D, - PIPE_TEXTURE_USAGE_SAMPLER, 0)); - - if(dst->format == src->format && (dstX1 - dstX0) == srcW && (dstY1 - dstY0) == srcH) { - /* FIXME: this will most surely fail for overlapping rectangles */ - pipe->surface_copy(pipe, - dst, dstX0, dstY0, /* dest */ - src, srcX0, srcY0, /* src */ - srcW, srcH); /* size */ - return; - } - assert(screen->is_format_supported(screen, dst->format, PIPE_TEXTURE_2D, PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)); |