/*
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* Copyright (C) 2009-2010 Francisco Jerez.
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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
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* a 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, sublicense, 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
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "nouveau_driver.h"
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#include "nouveau_bufferobj.h"
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#include "nouveau_util.h"
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#include "main/bufferobj.h"
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#include "main/glformats.h"
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#include "main/image.h"
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/* Arbitrary pushbuf length we can assume we can get with a single
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* call to WAIT_RING. */
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#define PUSHBUF_DWORDS 65536
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/* Functions to turn GL arrays or index buffers into nouveau_array
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* structures. */
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static int
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get_array_stride(struct gl_context *ctx, const struct gl_vertex_array *a)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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if (render->mode == VBO && !_mesa_is_bufferobj(a->BufferObj))
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/* Pack client buffers. */
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return align(_mesa_sizeof_type(a->Type) * a->Size, 4);
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else
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return a->StrideB;
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}
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static void
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vbo_init_arrays(struct gl_context *ctx, const struct _mesa_index_buffer *ib,
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const struct gl_vertex_array **arrays)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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GLboolean imm = (render->mode == IMM);
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int i, attr;
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if (ib) {
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GLenum ib_type;
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if (ib->index_size == 4)
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ib_type = GL_UNSIGNED_INT;
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else if (ib->index_size == 2)
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ib_type = GL_UNSIGNED_SHORT;
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else
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ib_type = GL_UNSIGNED_BYTE;
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nouveau_init_array(&render->ib, 0, 0, ib->count, ib_type,
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ib->obj, ib->ptr, GL_TRUE, ctx);
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}
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FOR_EACH_BOUND_ATTR(render, i, attr) {
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const struct gl_vertex_array *array = arrays[attr];
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nouveau_init_array(&render->attrs[attr], attr,
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get_array_stride(ctx, array),
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array->Size, array->Type,
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imm ? array->BufferObj : NULL,
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array->Ptr, imm, ctx);
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}
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}
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static void
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vbo_deinit_arrays(struct gl_context *ctx, const struct _mesa_index_buffer *ib,
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const struct gl_vertex_array **arrays)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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int i, attr;
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if (ib)
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nouveau_cleanup_array(&render->ib);
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FOR_EACH_BOUND_ATTR(render, i, attr) {
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struct nouveau_array *a = &render->attrs[attr];
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if (render->mode == IMM)
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nouveau_bo_ref(NULL, &a->bo);
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nouveau_deinit_array(a);
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render->map[i] = -1;
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}
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render->attr_count = 0;
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}
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/* Make some rendering decisions from the GL context. */
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static void
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vbo_choose_render_mode(struct gl_context *ctx, const struct gl_vertex_array **arrays)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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int i;
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render->mode = VBO;
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if (ctx->Light.Enabled) {
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for (i = 0; i < MAT_ATTRIB_MAX; i++) {
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if (arrays[VERT_ATTRIB_GENERIC0 + i]->StrideB) {
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render->mode = IMM;
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break;
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}
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}
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}
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}
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static void
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vbo_emit_attr(struct gl_context *ctx, const struct gl_vertex_array **arrays,
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int attr)
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{
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struct nouveau_pushbuf *push = context_push(ctx);
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struct nouveau_render_state *render = to_render_state(ctx);
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const struct gl_vertex_array *array = arrays[attr];
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struct nouveau_array *a = &render->attrs[attr];
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RENDER_LOCALS(ctx);
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if (!array->StrideB) {
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if (attr >= VERT_ATTRIB_GENERIC0)
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/* nouveau_update_state takes care of materials. */
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return;
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/* Constant attribute. */
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nouveau_init_array(a, attr, array->StrideB, array->Size,
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array->Type, array->BufferObj, array->Ptr,
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GL_TRUE, ctx);
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EMIT_IMM(ctx, a, 0);
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nouveau_deinit_array(a);
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} else {
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/* Varying attribute. */
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struct nouveau_attr_info *info = &TAG(vertex_attrs)[attr];
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if (render->mode == VBO) {
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render->map[info->vbo_index] = attr;
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render->vertex_size += array->_ElementSize;
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render->attr_count = MAX2(render->attr_count,
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info->vbo_index + 1);
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} else {
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render->map[render->attr_count++] = attr;
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render->vertex_size += 4 * info->imm_fields;
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}
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}
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}
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#define MAT(a) (VERT_ATTRIB_GENERIC0 + MAT_ATTRIB_##a)
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static void
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vbo_choose_attrs(struct gl_context *ctx, const struct gl_vertex_array **arrays)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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int i;
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/* Reset the vertex size. */
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render->vertex_size = 0;
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render->attr_count = 0;
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_COLOR0);
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if (ctx->Fog.ColorSumEnabled && !ctx->Light.Enabled)
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_COLOR1);
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for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
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if (ctx->Texture._EnabledCoordUnits & (1 << i))
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_TEX0 + i);
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}
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if (ctx->Fog.Enabled && ctx->Fog.FogCoordinateSource == GL_FOG_COORD)
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_FOG);
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if (ctx->Light.Enabled ||
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(ctx->Texture._GenFlags & TEXGEN_NEED_NORMALS))
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_NORMAL);
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if (ctx->Light.Enabled && render->mode == IMM) {
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vbo_emit_attr(ctx, arrays, MAT(FRONT_AMBIENT));
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vbo_emit_attr(ctx, arrays, MAT(FRONT_DIFFUSE));
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vbo_emit_attr(ctx, arrays, MAT(FRONT_SPECULAR));
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vbo_emit_attr(ctx, arrays, MAT(FRONT_SHININESS));
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if (ctx->Light.Model.TwoSide) {
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vbo_emit_attr(ctx, arrays, MAT(BACK_AMBIENT));
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vbo_emit_attr(ctx, arrays, MAT(BACK_DIFFUSE));
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vbo_emit_attr(ctx, arrays, MAT(BACK_SPECULAR));
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vbo_emit_attr(ctx, arrays, MAT(BACK_SHININESS));
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}
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}
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vbo_emit_attr(ctx, arrays, VERT_ATTRIB_POS);
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}
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static int
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get_max_client_stride(struct gl_context *ctx, const struct gl_vertex_array **arrays)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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int i, attr, s = 0;
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FOR_EACH_BOUND_ATTR(render, i, attr) {
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const struct gl_vertex_array *a = arrays[attr];
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if (!_mesa_is_bufferobj(a->BufferObj))
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s = MAX2(s, get_array_stride(ctx, a));
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}
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return s;
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}
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static void
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TAG(vbo_render_prims)(struct gl_context *ctx,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLboolean index_bounds_valid,
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GLuint min_index, GLuint max_index,
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struct gl_transform_feedback_object *tfb_vertcount,
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unsigned stream,
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struct gl_buffer_object *indirect);
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static GLboolean
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vbo_maybe_split(struct gl_context *ctx, const struct gl_vertex_array **arrays,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLuint min_index, GLuint max_index)
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{
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struct nouveau_context *nctx = to_nouveau_context(ctx);
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struct nouveau_render_state *render = to_render_state(ctx);
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struct nouveau_bufctx *bufctx = nctx->hw.bufctx;
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unsigned pushbuf_avail = PUSHBUF_DWORDS - 2 * (bufctx->relocs +
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render->attr_count),
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vert_avail = get_max_vertices(ctx, NULL, pushbuf_avail),
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idx_avail = get_max_vertices(ctx, ib, pushbuf_avail);
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int stride;
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/* Try to keep client buffers smaller than the scratch BOs. */
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if (render->mode == VBO &&
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(stride = get_max_client_stride(ctx, arrays)))
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vert_avail = MIN2(vert_avail,
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NOUVEAU_SCRATCH_SIZE / stride);
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if (max_index - min_index > vert_avail ||
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(ib && ib->count > idx_avail)) {
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struct split_limits limits = {
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.max_verts = vert_avail,
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.max_indices = idx_avail,
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.max_vb_size = ~0,
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};
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vbo_split_prims(ctx, arrays, prims, nr_prims, ib, min_index,
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max_index, TAG(vbo_render_prims), &limits);
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return GL_TRUE;
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}
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return GL_FALSE;
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}
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/* VBO rendering path. */
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static GLboolean
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check_update_array(struct nouveau_array *a, unsigned offset,
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struct nouveau_bo *bo, int *pdelta)
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{
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int delta = *pdelta;
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GLboolean dirty;
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if (a->bo == bo) {
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if (delta < 0)
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delta = ((int)offset - (int)a->offset) / a->stride;
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dirty = (delta < 0 ||
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offset != (a->offset + delta * a->stride));
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} else {
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dirty = GL_TRUE;
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}
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*pdelta = (dirty ? 0 : delta);
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return dirty;
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}
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static void
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vbo_bind_vertices(struct gl_context *ctx, const struct gl_vertex_array **arrays,
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int base, unsigned min_index, unsigned max_index, int *pdelta)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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struct nouveau_pushbuf *push = context_push(ctx);
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struct nouveau_bo *bo[NUM_VERTEX_ATTRS];
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unsigned offset[NUM_VERTEX_ATTRS];
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GLboolean dirty = GL_FALSE;
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int i, j, attr;
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RENDER_LOCALS(ctx);
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*pdelta = -1;
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FOR_EACH_BOUND_ATTR(render, i, attr) {
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const struct gl_vertex_array *array = arrays[attr];
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struct gl_buffer_object *obj = array->BufferObj;
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struct nouveau_array *a = &render->attrs[attr];
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unsigned delta = (base + min_index) * array->StrideB;
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bo[i] = NULL;
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if (nouveau_bufferobj_hw(obj)) {
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/* Array in a buffer obj. */
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nouveau_bo_ref(to_nouveau_bufferobj(obj)->bo, &bo[i]);
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offset[i] = delta + (intptr_t)array->Ptr;
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} else {
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int n = max_index - min_index + 1;
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char *sp = (char *)ADD_POINTERS(
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nouveau_bufferobj_sys(obj), array->Ptr) + delta;
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char *dp = nouveau_get_scratch(ctx, n * a->stride,
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&bo[i], &offset[i]);
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/* Array in client memory, move it to a
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* scratch buffer obj. */
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for (j = 0; j < n; j++)
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memcpy(dp + j * a->stride,
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sp + j * array->StrideB,
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a->stride);
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}
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dirty |= check_update_array(a, offset[i], bo[i], pdelta);
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}
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*pdelta -= min_index;
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if (dirty) {
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/* Buffers changed, update the attribute binding. */
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FOR_EACH_BOUND_ATTR(render, i, attr) {
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struct nouveau_array *a = &render->attrs[attr];
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nouveau_bo_ref(NULL, &a->bo);
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a->offset = offset[i];
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a->bo = bo[i];
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}
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TAG(render_release_vertices)(ctx);
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TAG(render_bind_vertices)(ctx);
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} else {
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/* Just cleanup. */
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FOR_EACH_BOUND_ATTR(render, i, attr)
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nouveau_bo_ref(NULL, &bo[i]);
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}
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BATCH_VALIDATE();
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}
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static void
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vbo_draw_vbo(struct gl_context *ctx, const struct gl_vertex_array **arrays,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib, GLuint min_index,
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GLuint max_index)
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{
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struct nouveau_context *nctx = to_nouveau_context(ctx);
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struct nouveau_pushbuf *push = context_push(ctx);
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dispatch_t dispatch = get_array_dispatch(&to_render_state(ctx)->ib);
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int i, delta = 0, basevertex = 0;
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RENDER_LOCALS(ctx);
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TAG(render_set_format)(ctx);
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for (i = 0; i < nr_prims; i++) {
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unsigned start = prims[i].start,
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count = prims[i].count;
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if (i == 0 || basevertex != prims[i].basevertex) {
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basevertex = prims[i].basevertex;
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vbo_bind_vertices(ctx, arrays, basevertex, min_index,
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max_index, &delta);
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nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
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if (nouveau_pushbuf_validate(push)) {
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nouveau_pushbuf_bufctx(push, NULL);
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return;
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}
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}
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if (count > get_max_vertices(ctx, ib, PUSH_AVAIL(push)))
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PUSH_SPACE(push, PUSHBUF_DWORDS);
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BATCH_BEGIN(nvgl_primitive(prims[i].mode));
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dispatch(ctx, start, delta, count);
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BATCH_END();
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}
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nouveau_pushbuf_bufctx(push, NULL);
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TAG(render_release_vertices)(ctx);
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}
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/* Immediate rendering path. */
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static unsigned
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extract_id(struct nouveau_array *a, int i, int j)
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{
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return j;
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}
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static void
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vbo_draw_imm(struct gl_context *ctx, const struct gl_vertex_array **arrays,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib, GLuint min_index,
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GLuint max_index)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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struct nouveau_context *nctx = to_nouveau_context(ctx);
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struct nouveau_pushbuf *push = context_push(ctx);
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extract_u_t extract = ib ? render->ib.extract_u : extract_id;
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int i, j, k, attr;
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RENDER_LOCALS(ctx);
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nouveau_pushbuf_bufctx(push, nctx->hw.bufctx);
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if (nouveau_pushbuf_validate(push)) {
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nouveau_pushbuf_bufctx(push, NULL);
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return;
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}
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for (i = 0; i < nr_prims; i++) {
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unsigned start = prims[i].start,
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end = start + prims[i].count;
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if (prims[i].count > get_max_vertices(ctx, ib,
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PUSH_AVAIL(push)))
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PUSH_SPACE(push, PUSHBUF_DWORDS);
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BATCH_BEGIN(nvgl_primitive(prims[i].mode));
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for (; start < end; start++) {
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j = prims[i].basevertex +
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extract(&render->ib, 0, start);
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FOR_EACH_BOUND_ATTR(render, k, attr)
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EMIT_IMM(ctx, &render->attrs[attr], j);
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}
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BATCH_END();
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}
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nouveau_pushbuf_bufctx(push, NULL);
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}
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/* draw_prims entry point when we're doing hw-tnl. */
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static void
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TAG(vbo_render_prims)(struct gl_context *ctx,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLboolean index_bounds_valid,
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GLuint min_index, GLuint max_index,
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struct gl_transform_feedback_object *tfb_vertcount,
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unsigned stream,
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struct gl_buffer_object *indirect)
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{
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struct nouveau_render_state *render = to_render_state(ctx);
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const struct gl_vertex_array **arrays = ctx->Array._DrawArrays;
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if (!index_bounds_valid)
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vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index,
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nr_prims);
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vbo_choose_render_mode(ctx, arrays);
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vbo_choose_attrs(ctx, arrays);
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if (vbo_maybe_split(ctx, arrays, prims, nr_prims, ib, min_index,
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max_index))
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return;
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vbo_init_arrays(ctx, ib, arrays);
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if (render->mode == VBO)
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vbo_draw_vbo(ctx, arrays, prims, nr_prims, ib, min_index,
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max_index);
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else
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vbo_draw_imm(ctx, arrays, prims, nr_prims, ib, min_index,
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max_index);
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vbo_deinit_arrays(ctx, ib, arrays);
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}
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/* VBO rendering entry points. */
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static void
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TAG(vbo_check_render_prims)(struct gl_context *ctx,
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const struct _mesa_prim *prims, GLuint nr_prims,
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const struct _mesa_index_buffer *ib,
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GLboolean index_bounds_valid,
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GLuint min_index, GLuint max_index,
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struct gl_transform_feedback_object *tfb_vertcount,
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unsigned stream,
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struct gl_buffer_object *indirect)
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{
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struct nouveau_context *nctx = to_nouveau_context(ctx);
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nouveau_validate_framebuffer(ctx);
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if (nctx->fallback == HWTNL)
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TAG(vbo_render_prims)(ctx, prims, nr_prims, ib,
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index_bounds_valid, min_index, max_index,
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tfb_vertcount, stream, indirect);
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if (nctx->fallback == SWTNL)
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_tnl_draw_prims(ctx, prims, nr_prims, ib,
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index_bounds_valid, min_index, max_index,
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tfb_vertcount, stream, indirect);
|
}
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void
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TAG(vbo_init)(struct gl_context *ctx)
|
{
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struct nouveau_render_state *render = to_render_state(ctx);
|
int i;
|
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for (i = 0; i < VERT_ATTRIB_MAX; i++)
|
render->map[i] = -1;
|
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vbo_set_draw_func(ctx, TAG(vbo_check_render_prims));
|
vbo_use_buffer_objects(ctx);
|
}
|
|
void
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TAG(vbo_destroy)(struct gl_context *ctx)
|
{
|
}
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