diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_drawpixels.c | 114 |
1 files changed, 79 insertions, 35 deletions
diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c index 68359e8037b..16ff307f827 100644 --- a/src/mesa/state_tracker/st_cb_drawpixels.c +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -1308,29 +1308,38 @@ st_get_color_read_renderbuffer(struct gl_context *ctx) } -/** Do the src/dest regions overlap? */ -static GLboolean -regions_overlap(GLint srcX, GLint srcY, GLint dstX, GLint dstY, - GLsizei width, GLsizei height) +/** + * \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 (srcX + width <= dstX || - dstX + width <= srcX || - srcY + height <= dstY || - dstY + height <= srcY) - return GL_FALSE; - else - return GL_TRUE; + 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 */ } /** * Try to do a glCopyPixels for simple cases with a blit by calling - * pipe->resource_copy_region(). + * pipe->blit(). * * We can do this when we're copying color pixels (depth/stencil * eventually) with no pixel zoom, no pixel transfer ops, no - * per-fragment ops, the src/dest regions don't overlap and the - * src/dest pixel formats are the same. + * per-fragment ops, and the src/dest regions don't overlap. */ static GLboolean blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, @@ -1339,8 +1348,9 @@ blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, { struct st_context *st = st_context(ctx); struct pipe_context *pipe = st->pipe; + struct pipe_screen *screen = pipe->screen; struct gl_pixelstore_attrib pack, unpack; - GLint readX, readY, readW, readH; + GLint readX, readY, readW, readH, drawX, drawY, drawW, drawH; if (type == GL_COLOR && ctx->Pixel.ZoomX == 1.0 && @@ -1354,11 +1364,9 @@ blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, !ctx->FragmentProgram.Enabled && !ctx->VertexProgram.Enabled && !ctx->Shader.CurrentFragmentProgram && - st_fb_orientation(ctx->ReadBuffer) == st_fb_orientation(ctx->DrawBuffer) && ctx->DrawBuffer->_NumColorDrawBuffers == 1 && !ctx->Query.CondRenderQuery) { struct st_renderbuffer *rbRead, *rbDraw; - GLint drawX, drawY; /* * Clip the read region against the src buffer bounds. @@ -1385,29 +1393,65 @@ blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, readX = readX - pack.SkipPixels + unpack.SkipPixels; readY = readY - pack.SkipRows + unpack.SkipRows; + drawW = readW; + drawH = readH; + rbRead = st_get_color_read_renderbuffer(ctx); rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); - if ((rbRead != rbDraw || - !regions_overlap(readX, readY, drawX, drawY, readW, readH)) && - rbRead->Base.Format == rbDraw->Base.Format) { - struct pipe_box srcBox; - - /* flip src/dst position if needed */ - if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { - /* both buffers will have the same orientation */ - readY = ctx->ReadBuffer->Height - readY - readH; - drawY = ctx->DrawBuffer->Height - drawY - readH; - } + /* Flip src/dst position depending on the orientation of buffers. */ + if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { + readY = rbRead->Base.Height - readY; + readH = -readH; + } - u_box_2d(readX, readY, readW, readH, &srcBox); + if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { + /* We can't flip the destination for pipe->blit, so we only adjust + * its position and flip the source. + */ + drawY = rbDraw->Base.Height - drawY - drawH; + readY += readH; + readH = -readH; + } - pipe->resource_copy_region(pipe, - rbDraw->texture, - rbDraw->rtt_level, drawX, drawY, 0, - rbRead->texture, - rbRead->rtt_level, &srcBox); - return GL_TRUE; + if (rbRead != rbDraw || + !regions_overlap(readX, readY, readX + readW, readY + readH, + drawX, drawY, drawX + drawW, drawY + drawH)) { + struct pipe_blit_info blit; + + memset(&blit, 0, sizeof(blit)); + blit.src.resource = rbRead->texture; + blit.src.level = rbRead->rtt_level; + blit.src.format = rbRead->texture->format; + blit.src.box.x = readX; + blit.src.box.y = readY; + blit.src.box.z = rbRead->rtt_face + rbRead->rtt_slice; + blit.src.box.width = readW; + blit.src.box.height = readH; + blit.src.box.depth = 1; + blit.dst.resource = rbDraw->texture; + blit.dst.level = rbDraw->rtt_level; + blit.dst.format = rbDraw->texture->format; + blit.dst.box.x = drawX; + blit.dst.box.y = drawY; + blit.dst.box.z = rbDraw->rtt_face + rbDraw->rtt_slice; + blit.dst.box.width = drawW; + blit.dst.box.height = drawH; + blit.dst.box.depth = 1; + blit.mask = PIPE_MASK_RGBA; + blit.filter = PIPE_TEX_FILTER_NEAREST; + + if (screen->is_format_supported(screen, blit.src.format, + blit.src.resource->target, + blit.src.resource->nr_samples, + PIPE_BIND_SAMPLER_VIEW) && + screen->is_format_supported(screen, blit.dst.format, + blit.dst.resource->target, + blit.dst.resource->nr_samples, + PIPE_BIND_RENDER_TARGET)) { + pipe->blit(pipe, &blit); + return GL_TRUE; + } } } |