diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_blit.c | 70 |
1 files changed, 54 insertions, 16 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c index 28513f54e62..6555dcd5882 100644 --- a/src/gallium/auxiliary/util/u_blit.c +++ b/src/gallium/auxiliary/util/u_blit.c @@ -223,6 +223,49 @@ setup_vertex_data(struct blit_state *ctx, /** + * Setup vertex data for the textured quad we'll draw. + * Note: y=0=top + */ +static void +setup_vertex_data_tex(struct blit_state *ctx, + float x0, float y0, float x1, float y1, + float s0, float t0, float s1, float t1, + 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] = s0; /*s*/ + ctx->vertices[0][1][1] = t0; /*t*/ + + ctx->vertices[1][0][0] = x1; + ctx->vertices[1][0][1] = y0; + ctx->vertices[1][0][2] = z; + ctx->vertices[1][1][0] = s1; /*s*/ + ctx->vertices[1][1][1] = t0; /*t*/ + + ctx->vertices[2][0][0] = x1; + ctx->vertices[2][0][1] = y1; + ctx->vertices[2][0][2] = z; + ctx->vertices[2][1][0] = s1; + ctx->vertices[2][1][1] = t1; + + ctx->vertices[3][0][0] = x0; + ctx->vertices[3][0][1] = y1; + ctx->vertices[3][0][2] = z; + ctx->vertices[3][1][0] = s0; + ctx->vertices[3][1][1] = t1; + + 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. @@ -382,25 +425,18 @@ util_blit_pixels_tex(struct blit_state *ctx, 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); + float s0, t0, s1, t1; assert(filter == PIPE_TEX_MIPFILTER_NEAREST || filter == PIPE_TEX_MIPFILTER_LINEAR); - if (srcLeft != srcX0) { - /* left-right flip */ - int tmp = dstX0; - dstX0 = dstX1; - dstX1 = tmp; - } + assert(tex->width[0] != 0); + assert(tex->height[0] != 0); - if (srcTop != srcY0) { - /* up-down flip */ - int tmp = dstY0; - dstY0 = dstY1; - dstY1 = tmp; - } + s0 = srcX0 / (float)tex->width[0]; + s1 = srcX1 / (float)tex->width[0]; + t0 = srcY0 / (float)tex->height[0]; + t1 = srcY1 / (float)tex->height[0]; assert(screen->is_format_supported(screen, dst->format, PIPE_SURFACE)); @@ -443,9 +479,11 @@ util_blit_pixels_tex(struct blit_state *ctx, cso_set_framebuffer(ctx->cso, &fb); /* draw quad */ - setup_vertex_data(ctx, + setup_vertex_data_tex(ctx, (float) dstX0, (float) dstY0, - (float) dstX1, (float) dstY1, z); + (float) dstX1, (float) dstY1, + s0, t0, s1, t1, + z); util_draw_vertex_buffer(ctx->pipe, ctx->vbuf, PIPE_PRIM_TRIANGLE_FAN, |