diff options
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r-- | src/gallium/auxiliary/util/u_blit.c | 80 |
1 files changed, 75 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c index d05dae3af8..bb316554a4 100644 --- a/src/gallium/auxiliary/util/u_blit.c +++ b/src/gallium/auxiliary/util/u_blit.c @@ -61,6 +61,9 @@ struct blit_state /*struct pipe_viewport_state viewport;*/ struct pipe_sampler_state *vs; struct pipe_sampler_state *fs; + + struct pipe_buffer *vbuf; /**< quad vertices */ + float vertices[4][2][4]; /**< vertex/texcoords for quad */ }; @@ -72,6 +75,7 @@ struct blit_state * util_create_blit(struct pipe_context *pipe, struct cso_context *cso) { struct blit_state *ctx; + uint i; ctx = CALLOC_STRUCT(blit_state); if (!ctx) @@ -132,6 +136,24 @@ util_create_blit(struct pipe_context *pipe, struct cso_context *cso) /* fragment shader */ ctx->fs = util_make_fragment_tex_shader(pipe); + ctx->vbuf = pipe->winsys->buffer_create(pipe->winsys, + 32, + PIPE_BUFFER_USAGE_VERTEX, + sizeof(ctx->vertices)); + if (!ctx->vbuf) { + FREE(ctx); + ctx->pipe->delete_fs_state(ctx->pipe, ctx->fs); + ctx->pipe->delete_vs_state(ctx->pipe, ctx->vs); + return NULL; + } + + /* init vertex data that doesn't change */ + for (i = 0; i < 4; i++) { + ctx->vertices[i][0][3] = 1.0f; /* w */ + ctx->vertices[i][1][2] = 0.0f; /* r */ + ctx->vertices[i][1][3] = 1.0f; /* q */ + } + return ctx; } @@ -147,11 +169,56 @@ util_destroy_blit(struct blit_state *ctx) pipe->delete_vs_state(pipe, ctx->vs); pipe->delete_fs_state(pipe, ctx->fs); + pipe->winsys->buffer_destroy(pipe->winsys, ctx->vbuf); + FREE(ctx); } /** + * Setup vertex data for the textured quad we'll draw. + * Note: y=0=top + */ +static void +setup_vertex_data(struct blit_state *ctx, + float x0, float y0, float x1, float y1, float z) +{ + void *buf; + + ctx->vertices[0][0][0] = x0; + ctx->vertices[0][0][1] = y0; + ctx->vertices[0][0][2] = z; + ctx->vertices[0][1][0] = 0.0f; /*s*/ + ctx->vertices[0][1][1] = 0.0f; /*t*/ + + ctx->vertices[1][0][0] = x1; + ctx->vertices[1][0][1] = y0; + ctx->vertices[1][0][2] = z; + ctx->vertices[1][1][0] = 1.0f; /*s*/ + ctx->vertices[1][1][1] = 0.0f; /*t*/ + + ctx->vertices[2][0][0] = x1; + ctx->vertices[2][0][1] = y1; + ctx->vertices[2][0][2] = z; + ctx->vertices[2][1][0] = 1.0f; + ctx->vertices[2][1][1] = 1.0f; + + ctx->vertices[3][0][0] = x0; + ctx->vertices[3][0][1] = y1; + ctx->vertices[3][0][2] = z; + ctx->vertices[3][1][0] = 0.0f; + ctx->vertices[3][1][1] = 1.0f; + + buf = ctx->pipe->winsys->buffer_map(ctx->pipe->winsys, ctx->vbuf, + PIPE_BUFFER_USAGE_CPU_WRITE); + + memcpy(buf, ctx->vertices, sizeof(ctx->vertices)); + + ctx->pipe->winsys->buffer_unmap(ctx->pipe->winsys, ctx->vbuf); +} + + +/** * Copy pixel block from src surface to dst surface. * Overlapping regions are acceptable. * XXX need some control over blitting Z and/or stencil. @@ -254,11 +321,14 @@ util_blit_pixels(struct blit_state *ctx, cso_set_framebuffer(ctx->cso, &fb); /* draw quad */ - util_draw_texquad(pipe, - (float)dstX0, - (float)dstY0, - (float)dstX1, - (float)dstY1, z); + 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); |