diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_blit.c | 101 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_blit.h | 14 |
2 files changed, 112 insertions, 3 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c index 7b9415d49ae..28513f54e62 100644 --- a/src/gallium/auxiliary/util/u_blit.c +++ b/src/gallium/auxiliary/util/u_blit.c @@ -362,3 +362,104 @@ util_blit_pixels(struct blit_state *ctx, screen->texture_release(screen, &tex); } +/** + * Copy pixel block from src texture to dst surface. + * Overlapping regions are acceptable. + * + * XXX Should support selection of level. + * XXX need some control over blitting Z and/or stencil. + */ +void +util_blit_pixels_tex(struct blit_state *ctx, + struct pipe_texture *tex, + int srcX0, int srcY0, + int srcX1, int srcY1, + struct pipe_surface *dst, + int dstX0, int dstY0, + int dstX1, int dstY1, + float z, uint filter) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_framebuffer_state fb; + const int srcLeft = MIN2(srcX0, srcX1); + const int srcTop = MIN2(srcY0, srcY1); + + assert(filter == PIPE_TEX_MIPFILTER_NEAREST || + filter == PIPE_TEX_MIPFILTER_LINEAR); + + if (srcLeft != srcX0) { + /* left-right flip */ + int tmp = dstX0; + dstX0 = dstX1; + dstX1 = tmp; + } + + if (srcTop != srcY0) { + /* up-down flip */ + int tmp = dstY0; + dstY0 = dstY1; + dstY1 = tmp; + } + + assert(screen->is_format_supported(screen, dst->format, PIPE_SURFACE)); + + /* save state (restored below) */ + cso_save_blend(ctx->cso); + cso_save_depth_stencil_alpha(ctx->cso); + cso_save_rasterizer(ctx->cso); + cso_save_samplers(ctx->cso); + cso_save_sampler_textures(ctx->cso); + cso_save_framebuffer(ctx->cso); + cso_save_fragment_shader(ctx->cso); + cso_save_vertex_shader(ctx->cso); + cso_save_viewport(ctx->cso); + + /* set misc state we care about */ + cso_set_blend(ctx->cso, &ctx->blend); + cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil); + cso_set_rasterizer(ctx->cso, &ctx->rasterizer); + cso_set_viewport(ctx->cso, &ctx->viewport); + + /* sampler */ + ctx->sampler.min_img_filter = filter; + ctx->sampler.mag_img_filter = filter; + cso_single_sampler(ctx->cso, 0, &ctx->sampler); + cso_single_sampler_done(ctx->cso); + + /* texture */ + cso_set_sampler_textures(ctx->cso, 1, &tex); + + /* shaders */ + cso_set_fragment_shader_handle(ctx->cso, ctx->fs); + cso_set_vertex_shader_handle(ctx->cso, ctx->vs); + + /* drawing dest */ + memset(&fb, 0, sizeof(fb)); + fb.width = dst->width; + fb.height = dst->height; + fb.num_cbufs = 1; + fb.cbufs[0] = dst; + cso_set_framebuffer(ctx->cso, &fb); + + /* draw quad */ + setup_vertex_data(ctx, + (float) dstX0, (float) dstY0, + (float) dstX1, (float) dstY1, z); + + util_draw_vertex_buffer(ctx->pipe, ctx->vbuf, + PIPE_PRIM_TRIANGLE_FAN, + 4, /* verts */ + 2); /* attribs/vert */ + + /* restore state we changed */ + cso_restore_blend(ctx->cso); + cso_restore_depth_stencil_alpha(ctx->cso); + cso_restore_rasterizer(ctx->cso); + cso_restore_samplers(ctx->cso); + cso_restore_sampler_textures(ctx->cso); + cso_restore_framebuffer(ctx->cso); + cso_restore_fragment_shader(ctx->cso); + cso_restore_vertex_shader(ctx->cso); + cso_restore_viewport(ctx->cso); +} diff --git a/src/gallium/auxiliary/util/u_blit.h b/src/gallium/auxiliary/util/u_blit.h index 0ce9732e620..7d0406c1047 100644 --- a/src/gallium/auxiliary/util/u_blit.h +++ b/src/gallium/auxiliary/util/u_blit.h @@ -42,15 +42,13 @@ struct cso_context; struct blit_state; + extern struct blit_state * util_create_blit(struct pipe_context *pipe, struct cso_context *cso); - extern void util_destroy_blit(struct blit_state *ctx); - - extern void util_blit_pixels(struct blit_state *ctx, struct pipe_surface *src, @@ -61,6 +59,16 @@ util_blit_pixels(struct blit_state *ctx, int dstX1, int dstY1, float z, uint filter); +extern void +util_blit_pixels_tex(struct blit_state *ctx, + struct pipe_texture *tex, + int srcX0, int srcY0, + int srcX1, int srcY1, + struct pipe_surface *dst, + int dstX0, int dstY0, + int dstX1, int dstY1, + float z, uint filter); + #ifdef __cplusplus } |