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diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c
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+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * Copy/blit pixel rect between surfaces
+ *
+ * @author Brian Paul
+ */
+
+
+#include "pipe/p_context.h"
+#include "pipe/p_debug.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_winsys.h"
+#include "pipe/p_shader_tokens.h"
+
+#include "util/u_blit.h"
+#include "util/u_draw_quad.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_simple_shaders.h"
+
+#include "cso_cache/cso_context.h"
+
+
+struct blit_state
+{
+ struct pipe_context *pipe;
+ struct cso_context *cso;
+
+ struct pipe_blend_state blend;
+ struct pipe_depth_stencil_alpha_state depthstencil;
+ struct pipe_rasterizer_state rasterizer;
+ struct pipe_sampler_state sampler;
+ struct pipe_viewport_state viewport;
+
+ struct pipe_shader_state vert_shader;
+ struct pipe_shader_state frag_shader;
+ void *vs;
+ void *fs;
+
+ struct pipe_buffer *vbuf; /**< quad vertices */
+ float vertices[4][2][4]; /**< vertex/texcoords for quad */
+};
+
+
+/**
+ * Create state object for blit.
+ * Intended to be created once and re-used for many blit() calls.
+ */
+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)
+ return NULL;
+
+ ctx->pipe = pipe;
+ ctx->cso = cso;
+
+ /* disabled blending/masking */
+ memset(&ctx->blend, 0, sizeof(ctx->blend));
+ ctx->blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+ ctx->blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+ ctx->blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ ctx->blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
+ ctx->blend.colormask = PIPE_MASK_RGBA;
+
+ /* no-op depth/stencil/alpha */
+ memset(&ctx->depthstencil, 0, sizeof(ctx->depthstencil));
+
+ /* rasterizer */
+ memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer));
+ ctx->rasterizer.front_winding = PIPE_WINDING_CW;
+ ctx->rasterizer.cull_mode = PIPE_WINDING_NONE;
+ ctx->rasterizer.bypass_clipping = 1;
+ /*ctx->rasterizer.bypass_vs = 1;*/
+
+ /* samplers */
+ memset(&ctx->sampler, 0, sizeof(ctx->sampler));
+ ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+ ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+ ctx->sampler.min_img_filter = 0; /* set later */
+ ctx->sampler.mag_img_filter = 0; /* set later */
+ ctx->sampler.normalized_coords = 1;
+
+ /* viewport (identity, we setup vertices in wincoords) */
+ ctx->viewport.scale[0] = 1.0;
+ ctx->viewport.scale[1] = 1.0;
+ ctx->viewport.scale[2] = 1.0;
+ ctx->viewport.scale[3] = 1.0;
+ ctx->viewport.translate[0] = 0.0;
+ ctx->viewport.translate[1] = 0.0;
+ ctx->viewport.translate[2] = 0.0;
+ ctx->viewport.translate[3] = 0.0;
+
+ /* vertex shader */
+ {
+ const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
+ TGSI_SEMANTIC_GENERIC };
+ const uint semantic_indexes[] = { 0, 0 };
+ ctx->vs = util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
+ semantic_indexes,
+ &ctx->vert_shader);
+ }
+
+ /* fragment shader */
+ ctx->fs = util_make_fragment_tex_shader(pipe, &ctx->frag_shader);
+
+ 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;
+}
+
+
+/**
+ * Destroy a blit context
+ */
+void
+util_destroy_blit(struct blit_state *ctx)
+{
+ struct pipe_context *pipe = ctx->pipe;
+
+ pipe->delete_vs_state(pipe, ctx->vs);
+ pipe->delete_fs_state(pipe, ctx->fs);
+
+ FREE((void*) ctx->vert_shader.tokens);
+ FREE((void*) ctx->frag_shader.tokens);
+
+ 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);
+}
+
+
+/**
+ * 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.
+ */
+void
+util_blit_pixels(struct blit_state *ctx,
+ struct pipe_surface *src,
+ 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_texture texTemp, *tex;
+ struct pipe_surface *texSurf;
+ struct pipe_framebuffer_state fb;
+ const int srcW = abs(srcX1 - srcX0);
+ const int srcH = abs(srcY1 - srcY0);
+ 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, 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, FALSE,
+ 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));
+
+ /*
+ * XXX for now we're always creating a temporary texture.
+ * Strictly speaking that's not always needed.
+ */
+
+ /* create temp texture */
+ memset(&texTemp, 0, sizeof(texTemp));
+ texTemp.target = PIPE_TEXTURE_2D;
+ texTemp.format = src->format;
+ texTemp.last_level = 0;
+ texTemp.width[0] = srcW;
+ texTemp.height[0] = srcH;
+ texTemp.depth[0] = 1;
+ texTemp.compressed = 0;
+ pf_get_block(src->format, &texTemp.block);
+
+ tex = screen->texture_create(screen, &texTemp);
+ if (!tex)
+ return;
+
+ texSurf = screen->get_tex_surface(screen, tex, 0, 0, 0,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ /* load temp texture */
+ pipe->surface_copy(pipe, FALSE,
+ texSurf, 0, 0, /* dest */
+ src, srcLeft, srcTop, /* src */
+ srcW, srcH); /* size */
+
+ /* free the surface, update the texture if necessary.
+ */
+ screen->tex_surface_release(screen, &texSurf);
+
+ /* 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);
+
+ 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;
+ float s0, t0, s1, t1;
+
+ assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
+ filter == PIPE_TEX_MIPFILTER_LINEAR);
+
+ assert(tex->width[0] != 0);
+ assert(tex->height[0] != 0);
+
+ 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_TEXTURE_2D,
+ PIPE_TEXTURE_USAGE_RENDER_TARGET, 0));
+
+ /* 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_tex(ctx,
+ (float) dstX0, (float) dstY0,
+ (float) dstX1, (float) dstY1,
+ s0, t0, s1, t1,
+ 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);
+}
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