/**************************************************************************
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*
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* Copyright 2008 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Copy/blit pixel rect between surfaces
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*
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* @author Brian Paul
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*/
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#include "pipe/p_context.h"
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#include "util/u_debug.h"
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#include "pipe/p_defines.h"
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#include "util/u_inlines.h"
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#include "pipe/p_shader_tokens.h"
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#include "pipe/p_state.h"
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#include "util/u_blit.h"
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#include "util/u_draw_quad.h"
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#include "util/u_format.h"
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#include "util/u_math.h"
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#include "util/u_memory.h"
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#include "util/u_sampler.h"
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#include "util/u_texture.h"
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#include "util/u_simple_shaders.h"
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#include "cso_cache/cso_context.h"
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struct blit_state
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{
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struct pipe_context *pipe;
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struct cso_context *cso;
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struct pipe_blend_state blend_write_color;
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struct pipe_depth_stencil_alpha_state dsa_keep_depthstencil;
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struct pipe_rasterizer_state rasterizer;
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struct pipe_sampler_state sampler;
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struct pipe_viewport_state viewport;
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struct pipe_vertex_element velem[2];
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void *vs;
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void *fs[PIPE_MAX_TEXTURE_TYPES][TGSI_WRITEMASK_XYZW + 1][3];
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struct pipe_resource *vbuf; /**< quad vertices */
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unsigned vbuf_slot;
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float vertices[4][2][4]; /**< vertex/texcoords for quad */
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};
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/**
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* Create state object for blit.
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* Intended to be created once and re-used for many blit() calls.
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*/
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struct blit_state *
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util_create_blit(struct pipe_context *pipe, struct cso_context *cso)
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{
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struct blit_state *ctx;
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uint i;
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ctx = CALLOC_STRUCT(blit_state);
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if (!ctx)
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return NULL;
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ctx->pipe = pipe;
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ctx->cso = cso;
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/* disabled blending/masking */
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ctx->blend_write_color.rt[0].colormask = PIPE_MASK_RGBA;
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/* rasterizer */
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ctx->rasterizer.cull_face = PIPE_FACE_NONE;
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ctx->rasterizer.half_pixel_center = 1;
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ctx->rasterizer.bottom_edge_rule = 1;
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ctx->rasterizer.depth_clip = 1;
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/* samplers */
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ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
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ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
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ctx->sampler.min_img_filter = 0; /* set later */
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ctx->sampler.mag_img_filter = 0; /* set later */
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/* vertex elements state */
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for (i = 0; i < 2; i++) {
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ctx->velem[i].src_offset = i * 4 * sizeof(float);
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ctx->velem[i].instance_divisor = 0;
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ctx->velem[i].vertex_buffer_index = cso_get_aux_vertex_buffer_slot(cso);
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ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
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}
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ctx->vbuf = NULL;
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/* init vertex data that doesn't change */
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for (i = 0; i < 4; i++) {
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ctx->vertices[i][0][3] = 1.0f; /* w */
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ctx->vertices[i][1][3] = 1.0f; /* q */
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}
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return ctx;
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}
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/**
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* Destroy a blit context
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*/
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void
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util_destroy_blit(struct blit_state *ctx)
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{
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struct pipe_context *pipe = ctx->pipe;
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unsigned i, j, k;
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if (ctx->vs)
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pipe->delete_vs_state(pipe, ctx->vs);
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for (i = 0; i < ARRAY_SIZE(ctx->fs); i++) {
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for (j = 0; j < ARRAY_SIZE(ctx->fs[i]); j++) {
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for (k = 0; k < ARRAY_SIZE(ctx->fs[i][j]); k++) {
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if (ctx->fs[i][j][k])
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pipe->delete_fs_state(pipe, ctx->fs[i][j][k]);
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}
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}
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}
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pipe_resource_reference(&ctx->vbuf, NULL);
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FREE(ctx);
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}
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/**
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* Helper function to set the fragment shaders.
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*/
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static inline void
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set_fragment_shader(struct blit_state *ctx, uint writemask,
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enum pipe_format format,
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enum pipe_texture_target pipe_tex)
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{
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enum tgsi_return_type stype;
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unsigned idx;
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if (util_format_is_pure_uint(format)) {
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stype = TGSI_RETURN_TYPE_UINT;
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idx = 0;
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} else if (util_format_is_pure_sint(format)) {
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stype = TGSI_RETURN_TYPE_SINT;
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idx = 1;
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} else {
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stype = TGSI_RETURN_TYPE_FLOAT;
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idx = 2;
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}
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if (!ctx->fs[pipe_tex][writemask][idx]) {
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unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex, 0);
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/* OpenGL does not allow blits from signed to unsigned integer
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* or vice versa. */
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ctx->fs[pipe_tex][writemask][idx] =
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util_make_fragment_tex_shader_writemask(ctx->pipe, tgsi_tex,
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TGSI_INTERPOLATE_LINEAR,
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writemask,
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stype, stype, false, false);
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}
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cso_set_fragment_shader_handle(ctx->cso, ctx->fs[pipe_tex][writemask][idx]);
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}
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/**
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* Helper function to set the vertex shader.
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*/
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static inline void
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set_vertex_shader(struct blit_state *ctx)
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{
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/* vertex shader - still required to provide the linkage between
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* fragment shader input semantics and vertex_element/buffers.
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*/
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if (!ctx->vs) {
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const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
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TGSI_SEMANTIC_GENERIC };
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const uint semantic_indexes[] = { 0, 0 };
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ctx->vs = util_make_vertex_passthrough_shader(ctx->pipe, 2,
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semantic_names,
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semantic_indexes, FALSE);
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}
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cso_set_vertex_shader_handle(ctx->cso, ctx->vs);
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}
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/**
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* Get offset of next free slot in vertex buffer for quad vertices.
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*/
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static unsigned
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get_next_slot( struct blit_state *ctx )
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{
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const unsigned max_slots = 4096 / sizeof ctx->vertices;
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if (ctx->vbuf_slot >= max_slots) {
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pipe_resource_reference(&ctx->vbuf, NULL);
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ctx->vbuf_slot = 0;
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}
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if (!ctx->vbuf) {
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ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
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PIPE_BIND_VERTEX_BUFFER,
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PIPE_USAGE_STREAM,
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max_slots * sizeof ctx->vertices);
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}
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return ctx->vbuf_slot++ * sizeof ctx->vertices;
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}
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/**
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* Setup vertex data for the textured quad we'll draw.
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* Note: y=0=top
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*
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* FIXME: We should call util_map_texcoords2d_onto_cubemap
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* for cubemaps.
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*/
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static unsigned
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setup_vertex_data_tex(struct blit_state *ctx,
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unsigned src_target,
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unsigned src_face,
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float x0, float y0, float x1, float y1,
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float s0, float t0, float s1, float t1,
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float z)
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{
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unsigned offset;
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ctx->vertices[0][0][0] = x0;
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ctx->vertices[0][0][1] = y0;
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ctx->vertices[0][0][2] = z;
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ctx->vertices[0][1][0] = s0; /*s*/
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ctx->vertices[0][1][1] = t0; /*t*/
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ctx->vertices[0][1][2] = 0; /*r*/
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ctx->vertices[1][0][0] = x1;
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ctx->vertices[1][0][1] = y0;
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ctx->vertices[1][0][2] = z;
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ctx->vertices[1][1][0] = s1; /*s*/
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ctx->vertices[1][1][1] = t0; /*t*/
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ctx->vertices[1][1][2] = 0; /*r*/
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ctx->vertices[2][0][0] = x1;
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ctx->vertices[2][0][1] = y1;
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ctx->vertices[2][0][2] = z;
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ctx->vertices[2][1][0] = s1;
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ctx->vertices[2][1][1] = t1;
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ctx->vertices[3][1][2] = 0;
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ctx->vertices[3][0][0] = x0;
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ctx->vertices[3][0][1] = y1;
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ctx->vertices[3][0][2] = z;
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ctx->vertices[3][1][0] = s0;
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ctx->vertices[3][1][1] = t1;
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ctx->vertices[3][1][2] = 0;
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if (src_target == PIPE_TEXTURE_CUBE ||
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src_target == PIPE_TEXTURE_CUBE_ARRAY) {
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/* Map cubemap texture coordinates inplace. */
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const unsigned stride = sizeof ctx->vertices[0] / sizeof ctx->vertices[0][0][0];
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util_map_texcoords2d_onto_cubemap(src_face,
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&ctx->vertices[0][1][0], stride,
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&ctx->vertices[0][1][0], stride,
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TRUE);
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}
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offset = get_next_slot( ctx );
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if (ctx->vbuf) {
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pipe_buffer_write_nooverlap(ctx->pipe, ctx->vbuf,
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offset, sizeof(ctx->vertices), ctx->vertices);
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}
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return offset;
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}
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/**
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* \return TRUE if two regions overlap, FALSE otherwise
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*/
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static boolean
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regions_overlap(int srcX0, int srcY0,
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int srcX1, int srcY1,
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int dstX0, int dstY0,
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int dstX1, int dstY1)
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{
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if (MAX2(srcX0, srcX1) <= MIN2(dstX0, dstX1))
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return FALSE; /* src completely left of dst */
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if (MAX2(dstX0, dstX1) <= MIN2(srcX0, srcX1))
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return FALSE; /* dst completely left of src */
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if (MAX2(srcY0, srcY1) <= MIN2(dstY0, dstY1))
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return FALSE; /* src completely above dst */
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if (MAX2(dstY0, dstY1) <= MIN2(srcY0, srcY1))
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return FALSE; /* dst completely above src */
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return TRUE; /* some overlap */
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}
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/**
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* Can we blit from src format to dest format with a simple copy?
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*/
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static boolean
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formats_compatible(enum pipe_format src_format,
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enum pipe_format dst_format)
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{
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if (src_format == dst_format) {
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return TRUE;
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}
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else {
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const struct util_format_description *src_desc =
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util_format_description(src_format);
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const struct util_format_description *dst_desc =
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util_format_description(dst_format);
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return util_is_format_compatible(src_desc, dst_desc);
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}
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}
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/**
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* Copy pixel block from src surface to dst surface.
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* Overlapping regions are acceptable.
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* Flipping and stretching are supported.
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* \param filter one of PIPE_TEX_FILTER_NEAREST/LINEAR
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* \param writemask bitmask of PIPE_MASK_[RGBAZS]. Controls which channels
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* in the dest surface are sourced from the src surface.
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* Disabled color channels are sourced from (0,0,0,1).
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*/
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void
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util_blit_pixels(struct blit_state *ctx,
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struct pipe_resource *src_tex,
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unsigned src_level,
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int srcX0, int srcY0,
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int srcX1, int srcY1,
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int srcZ0,
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struct pipe_surface *dst,
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int dstX0, int dstY0,
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int dstX1, int dstY1,
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MAYBE_UNUSED float z, uint filter,
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uint writemask)
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{
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struct pipe_context *pipe = ctx->pipe;
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enum pipe_format src_format, dst_format;
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const int srcW = abs(srcX1 - srcX0);
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const int srcH = abs(srcY1 - srcY0);
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boolean overlap;
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boolean is_stencil, is_depth, blit_depth, blit_stencil;
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const struct util_format_description *src_desc =
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util_format_description(src_tex->format);
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struct pipe_blit_info info;
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assert(filter == PIPE_TEX_FILTER_NEAREST ||
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filter == PIPE_TEX_FILTER_LINEAR);
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assert(src_level <= src_tex->last_level);
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/* do the regions overlap? */
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overlap = src_tex == dst->texture &&
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dst->u.tex.level == src_level &&
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dst->u.tex.first_layer == srcZ0 &&
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regions_overlap(srcX0, srcY0, srcX1, srcY1,
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dstX0, dstY0, dstX1, dstY1);
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src_format = util_format_linear(src_tex->format);
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dst_format = util_format_linear(dst->texture->format);
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/* See whether we will blit depth or stencil. */
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is_depth = util_format_has_depth(src_desc);
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is_stencil = util_format_has_stencil(src_desc);
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blit_depth = is_depth && (writemask & PIPE_MASK_Z);
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blit_stencil = is_stencil && (writemask & PIPE_MASK_S);
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if (is_depth || is_stencil) {
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assert((writemask & PIPE_MASK_RGBA) == 0);
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assert(blit_depth || blit_stencil);
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}
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else {
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assert((writemask & PIPE_MASK_ZS) == 0);
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assert(!blit_depth);
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assert(!blit_stencil);
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}
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/*
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* XXX: z parameter is deprecated. dst->u.tex.first_layer
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* specificies the destination layer.
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*/
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assert(z == 0.0f);
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/*
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* Check for simple case: no format conversion, no flipping, no stretching,
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* no overlapping, same number of samples.
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* Filter mode should not matter since there's no stretching.
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*/
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if (formats_compatible(src_format, dst_format) &&
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src_tex->nr_samples == dst->texture->nr_samples &&
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is_stencil == blit_stencil &&
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is_depth == blit_depth &&
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srcX0 < srcX1 &&
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dstX0 < dstX1 &&
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srcY0 < srcY1 &&
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dstY0 < dstY1 &&
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(dstX1 - dstX0) == (srcX1 - srcX0) &&
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(dstY1 - dstY0) == (srcY1 - srcY0) &&
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!overlap) {
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struct pipe_box src_box;
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src_box.x = srcX0;
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src_box.y = srcY0;
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src_box.z = srcZ0;
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src_box.width = srcW;
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src_box.height = srcH;
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src_box.depth = 1;
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pipe->resource_copy_region(pipe,
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dst->texture, dst->u.tex.level,
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dstX0, dstY0, dst->u.tex.first_layer,/* dest */
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src_tex, src_level,
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&src_box);
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return;
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}
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memset(&info, 0, sizeof info);
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info.dst.resource = dst->texture;
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info.dst.level = dst->u.tex.level;
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info.dst.box.x = dstX0;
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info.dst.box.y = dstY0;
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info.dst.box.z = dst->u.tex.first_layer;
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info.dst.box.width = dstX1 - dstX0;
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info.dst.box.height = dstY1 - dstY0;
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assert(info.dst.box.width >= 0);
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assert(info.dst.box.height >= 0);
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info.dst.box.depth = 1;
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info.dst.format = dst_format;
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info.src.resource = src_tex;
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info.src.level = src_level;
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info.src.box.x = srcX0;
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info.src.box.y = srcY0;
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info.src.box.z = srcZ0;
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info.src.box.width = srcX1 - srcX0;
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info.src.box.height = srcY1 - srcY0;
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info.src.box.depth = 1;
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info.src.format = src_format;
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info.mask = writemask;
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info.filter = filter;
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info.scissor_enable = 0;
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pipe->blit(pipe, &info);
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}
|
|
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/**
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* Copy pixel block from src sampler view to dst surface.
|
*
|
* The sampler view's first_level field indicates the source
|
* mipmap level to use.
|
*
|
* The sampler view's first_layer indicate the layer to use, but for
|
* cube maps it must point to the first face. Face is passed in src_face.
|
*
|
* The main advantage over util_blit_pixels is that it allows to specify swizzles in
|
* pipe_sampler_view::swizzle_?.
|
*
|
* But there is no control over blitting Z and/or stencil.
|
*/
|
void
|
util_blit_pixels_tex(struct blit_state *ctx,
|
struct pipe_sampler_view *src_sampler_view,
|
int srcX0, int srcY0,
|
int srcX1, int srcY1,
|
unsigned src_face,
|
struct pipe_surface *dst,
|
int dstX0, int dstY0,
|
int dstX1, int dstY1,
|
float z, uint filter)
|
{
|
boolean normalized = src_sampler_view->texture->target != PIPE_TEXTURE_RECT;
|
struct pipe_framebuffer_state fb;
|
float s0, t0, s1, t1;
|
unsigned offset;
|
struct pipe_resource *tex = src_sampler_view->texture;
|
|
assert(filter == PIPE_TEX_FILTER_NEAREST ||
|
filter == PIPE_TEX_FILTER_LINEAR);
|
|
assert(tex);
|
assert(tex->width0 != 0);
|
assert(tex->height0 != 0);
|
|
s0 = (float) srcX0;
|
s1 = (float) srcX1;
|
t0 = (float) srcY0;
|
t1 = (float) srcY1;
|
|
if(normalized)
|
{
|
/* normalize according to the mipmap level's size */
|
int level = src_sampler_view->u.tex.first_level;
|
float w = (float) u_minify(tex->width0, level);
|
float h = (float) u_minify(tex->height0, level);
|
s0 /= w;
|
s1 /= w;
|
t0 /= h;
|
t1 /= h;
|
}
|
|
assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format,
|
PIPE_TEXTURE_2D,
|
dst->texture->nr_samples,
|
PIPE_BIND_RENDER_TARGET));
|
|
/* save state (restored below) */
|
cso_save_state(ctx->cso, (CSO_BIT_BLEND |
|
CSO_BIT_DEPTH_STENCIL_ALPHA |
|
CSO_BIT_RASTERIZER |
|
CSO_BIT_SAMPLE_MASK |
|
CSO_BIT_MIN_SAMPLES |
|
CSO_BIT_FRAGMENT_SAMPLERS |
|
CSO_BIT_FRAGMENT_SAMPLER_VIEWS |
|
CSO_BIT_STREAM_OUTPUTS |
|
CSO_BIT_VIEWPORT |
|
CSO_BIT_FRAMEBUFFER |
|
CSO_BIT_PAUSE_QUERIES |
|
CSO_BIT_FRAGMENT_SHADER |
|
CSO_BIT_VERTEX_SHADER |
|
CSO_BIT_TESSCTRL_SHADER |
|
CSO_BIT_TESSEVAL_SHADER |
|
CSO_BIT_GEOMETRY_SHADER |
|
CSO_BIT_VERTEX_ELEMENTS |
|
CSO_BIT_AUX_VERTEX_BUFFER_SLOT));
|
|
/* set misc state we care about */
|
cso_set_blend(ctx->cso, &ctx->blend_write_color);
|
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_keep_depthstencil);
|
cso_set_sample_mask(ctx->cso, ~0);
|
cso_set_min_samples(ctx->cso, 1);
|
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
|
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
|
cso_set_stream_outputs(ctx->cso, 0, NULL, NULL);
|
|
/* sampler */
|
ctx->sampler.normalized_coords = normalized;
|
ctx->sampler.min_img_filter = filter;
|
ctx->sampler.mag_img_filter = filter;
|
{
|
const struct pipe_sampler_state *samplers[] = {&ctx->sampler};
|
cso_set_samplers(ctx->cso, PIPE_SHADER_FRAGMENT, 1, samplers);
|
}
|
|
/* viewport */
|
ctx->viewport.scale[0] = 0.5f * dst->width;
|
ctx->viewport.scale[1] = 0.5f * dst->height;
|
ctx->viewport.scale[2] = 0.5f;
|
ctx->viewport.translate[0] = 0.5f * dst->width;
|
ctx->viewport.translate[1] = 0.5f * dst->height;
|
ctx->viewport.translate[2] = 0.5f;
|
cso_set_viewport(ctx->cso, &ctx->viewport);
|
|
/* texture */
|
cso_set_sampler_views(ctx->cso, PIPE_SHADER_FRAGMENT, 1, &src_sampler_view);
|
|
/* shaders */
|
set_fragment_shader(ctx, TGSI_WRITEMASK_XYZW,
|
src_sampler_view->format,
|
src_sampler_view->texture->target);
|
set_vertex_shader(ctx);
|
cso_set_tessctrl_shader_handle(ctx->cso, NULL);
|
cso_set_tesseval_shader_handle(ctx->cso, NULL);
|
cso_set_geometry_shader_handle(ctx->cso, NULL);
|
|
/* drawing dest */
|
memset(&fb, 0, sizeof(fb));
|
fb.width = dst->width;
|
fb.height = dst->height;
|
fb.nr_cbufs = 1;
|
fb.cbufs[0] = dst;
|
cso_set_framebuffer(ctx->cso, &fb);
|
|
/* draw quad */
|
offset = setup_vertex_data_tex(ctx,
|
src_sampler_view->texture->target,
|
src_face,
|
(float) dstX0 / dst->width * 2.0f - 1.0f,
|
(float) dstY0 / dst->height * 2.0f - 1.0f,
|
(float) dstX1 / dst->width * 2.0f - 1.0f,
|
(float) dstY1 / dst->height * 2.0f - 1.0f,
|
s0, t0, s1, t1,
|
z);
|
|
util_draw_vertex_buffer(ctx->pipe, ctx->cso, ctx->vbuf,
|
cso_get_aux_vertex_buffer_slot(ctx->cso),
|
offset,
|
PIPE_PRIM_TRIANGLE_FAN,
|
4, /* verts */
|
2); /* attribs/vert */
|
|
/* restore state we changed */
|
cso_restore_state(ctx->cso);
|
}
|
