| /************************************************************************** |
| * |
| * Copyright 2007 VMware, Inc. |
| * 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 VMWARE 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. |
| * |
| **************************************************************************/ |
| |
| /* |
| * This file implements the st_draw_vbo() function which is called from |
| * Mesa's VBO module. All point/line/triangle rendering is done through |
| * this function whether the user called glBegin/End, glDrawArrays, |
| * glDrawElements, glEvalMesh, or glCalList, etc. |
| * |
| * Authors: |
| * Keith Whitwell <keithw@vmware.com> |
| */ |
| |
| |
| #include "main/imports.h" |
| #include "main/image.h" |
| #include "main/bufferobj.h" |
| #include "main/macros.h" |
| #include "main/varray.h" |
| |
| #include "compiler/glsl/ir_uniform.h" |
| |
| #include "vbo/vbo.h" |
| |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_cb_bitmap.h" |
| #include "st_cb_bufferobjects.h" |
| #include "st_cb_xformfb.h" |
| #include "st_debug.h" |
| #include "st_draw.h" |
| #include "st_program.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_inlines.h" |
| #include "util/u_format.h" |
| #include "util/u_prim.h" |
| #include "util/u_draw.h" |
| #include "util/u_upload_mgr.h" |
| #include "draw/draw_context.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| /** |
| * This is very similar to vbo_all_varyings_in_vbos() but we are |
| * only interested in per-vertex data. See bug 38626. |
| */ |
| static GLboolean |
| all_varyings_in_vbos(const struct gl_vertex_array *arrays[]) |
| { |
| GLuint i; |
| |
| for (i = 0; i < VERT_ATTRIB_MAX; i++) |
| if (arrays[i]->StrideB && |
| !arrays[i]->InstanceDivisor && |
| !_mesa_is_bufferobj(arrays[i]->BufferObj)) |
| return GL_FALSE; |
| |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Basically, translate Mesa's index buffer information into |
| * a pipe_index_buffer object. |
| * \return TRUE or FALSE for success/failure |
| */ |
| static boolean |
| setup_index_buffer(struct st_context *st, |
| const struct _mesa_index_buffer *ib, |
| struct pipe_index_buffer *ibuffer) |
| { |
| struct gl_buffer_object *bufobj = ib->obj; |
| |
| ibuffer->index_size = vbo_sizeof_ib_type(ib->type); |
| |
| /* get/create the index buffer object */ |
| if (_mesa_is_bufferobj(bufobj)) { |
| /* indices are in a real VBO */ |
| ibuffer->buffer = st_buffer_object(bufobj)->buffer; |
| ibuffer->offset = pointer_to_offset(ib->ptr); |
| } |
| else if (st->indexbuf_uploader) { |
| /* upload indexes from user memory into a real buffer */ |
| u_upload_data(st->indexbuf_uploader, 0, |
| ib->count * ibuffer->index_size, 4, ib->ptr, |
| &ibuffer->offset, &ibuffer->buffer); |
| if (!ibuffer->buffer) { |
| /* out of memory */ |
| return FALSE; |
| } |
| u_upload_unmap(st->indexbuf_uploader); |
| } |
| else { |
| /* indices are in user space memory */ |
| ibuffer->user_buffer = ib->ptr; |
| } |
| |
| cso_set_index_buffer(st->cso_context, ibuffer); |
| return TRUE; |
| } |
| |
| |
| /** |
| * Set the restart index. |
| */ |
| static void |
| setup_primitive_restart(struct gl_context *ctx, |
| const struct _mesa_index_buffer *ib, |
| struct pipe_draw_info *info) |
| { |
| if (ctx->Array._PrimitiveRestart) { |
| info->restart_index = _mesa_primitive_restart_index(ctx, ib->type); |
| |
| /* Enable primitive restart only when the restart index can have an |
| * effect. This is required for correctness in radeonsi VI support. |
| * Other hardware may also benefit from taking a faster, non-restart path |
| * when possible. |
| */ |
| if ((ib->type == GL_UNSIGNED_INT) || |
| (ib->type == GL_UNSIGNED_SHORT && info->restart_index <= 0xffff) || |
| (ib->type == GL_UNSIGNED_BYTE && info->restart_index <= 0xff)) |
| info->primitive_restart = true; |
| } |
| } |
| |
| |
| /** |
| * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to |
| * the corresponding Gallium type. |
| */ |
| static unsigned |
| translate_prim(const struct gl_context *ctx, unsigned prim) |
| { |
| /* GL prims should match Gallium prims, spot-check a few */ |
| STATIC_ASSERT(GL_POINTS == PIPE_PRIM_POINTS); |
| STATIC_ASSERT(GL_QUADS == PIPE_PRIM_QUADS); |
| STATIC_ASSERT(GL_TRIANGLE_STRIP_ADJACENCY == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY); |
| STATIC_ASSERT(GL_PATCHES == PIPE_PRIM_PATCHES); |
| |
| return prim; |
| } |
| |
| |
| /** |
| * This function gets plugged into the VBO module and is called when |
| * we have something to render. |
| * Basically, translate the information into the format expected by gallium. |
| */ |
| void |
| st_draw_vbo(struct gl_context *ctx, |
| const struct _mesa_prim *prims, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, |
| GLuint min_index, |
| GLuint max_index, |
| struct gl_transform_feedback_object *tfb_vertcount, |
| unsigned stream, |
| struct gl_buffer_object *indirect) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_index_buffer ibuffer = {0}; |
| struct pipe_draw_info info; |
| const struct gl_vertex_array **arrays = ctx->Array._DrawArrays; |
| unsigned i; |
| |
| /* Mesa core state should have been validated already */ |
| assert(ctx->NewState == 0x0); |
| |
| st_flush_bitmap_cache(st); |
| st_invalidate_readpix_cache(st); |
| |
| /* Validate state. */ |
| if ((st->dirty | ctx->NewDriverState) & ST_PIPELINE_RENDER_STATE_MASK || |
| st->gfx_shaders_may_be_dirty) { |
| st_validate_state(st, ST_PIPELINE_RENDER); |
| } |
| |
| if (st->vertex_array_out_of_memory) { |
| return; |
| } |
| |
| util_draw_init_info(&info); |
| |
| if (ib) { |
| /* Get index bounds for user buffers. */ |
| if (!index_bounds_valid) |
| if (!all_varyings_in_vbos(arrays)) |
| vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, |
| nr_prims); |
| |
| if (!setup_index_buffer(st, ib, &ibuffer)) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBegin/DrawElements/DrawArray"); |
| return; |
| } |
| |
| info.indexed = TRUE; |
| if (min_index != ~0U && max_index != ~0U) { |
| info.min_index = min_index; |
| info.max_index = max_index; |
| } |
| |
| /* The VBO module handles restart for the non-indexed GLDrawArrays |
| * so we only set these fields for indexed drawing: |
| */ |
| setup_primitive_restart(ctx, ib, &info); |
| } |
| else { |
| /* Transform feedback drawing is always non-indexed. */ |
| /* Set info.count_from_stream_output. */ |
| if (tfb_vertcount) { |
| if (!st_transform_feedback_draw_init(tfb_vertcount, stream, &info)) |
| return; |
| } |
| } |
| |
| assert(!indirect); |
| |
| /* do actual drawing */ |
| for (i = 0; i < nr_prims; i++) { |
| info.mode = translate_prim(ctx, prims[i].mode); |
| info.start = prims[i].start; |
| info.count = prims[i].count; |
| info.start_instance = prims[i].base_instance; |
| info.instance_count = prims[i].num_instances; |
| info.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices; |
| info.index_bias = prims[i].basevertex; |
| info.drawid = prims[i].draw_id; |
| if (!ib) { |
| info.min_index = info.start; |
| info.max_index = info.start + info.count - 1; |
| } |
| |
| if (ST_DEBUG & DEBUG_DRAW) { |
| debug_printf("st/draw: mode %s start %u count %u indexed %d\n", |
| u_prim_name(info.mode), |
| info.start, |
| info.count, |
| info.indexed); |
| } |
| |
| if (info.count_from_stream_output) { |
| cso_draw_vbo(st->cso_context, &info); |
| } |
| else if (info.primitive_restart) { |
| /* don't trim, restarts might be inside index list */ |
| cso_draw_vbo(st->cso_context, &info); |
| } |
| else if (u_trim_pipe_prim(prims[i].mode, &info.count)) { |
| cso_draw_vbo(st->cso_context, &info); |
| } |
| } |
| |
| if (ib && st->indexbuf_uploader && !_mesa_is_bufferobj(ib->obj)) { |
| pipe_resource_reference(&ibuffer.buffer, NULL); |
| } |
| } |
| |
| static void |
| st_indirect_draw_vbo(struct gl_context *ctx, |
| GLuint mode, |
| struct gl_buffer_object *indirect_data, |
| GLsizeiptr indirect_offset, |
| unsigned draw_count, |
| unsigned stride, |
| struct gl_buffer_object *indirect_params, |
| GLsizeiptr indirect_params_offset, |
| const struct _mesa_index_buffer *ib) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_index_buffer ibuffer = {0}; |
| struct pipe_draw_info info; |
| |
| /* Mesa core state should have been validated already */ |
| assert(ctx->NewState == 0x0); |
| assert(stride); |
| |
| /* Validate state. */ |
| if ((st->dirty | ctx->NewDriverState) & ST_PIPELINE_RENDER_STATE_MASK || |
| st->gfx_shaders_may_be_dirty) { |
| st_validate_state(st, ST_PIPELINE_RENDER); |
| } |
| |
| if (st->vertex_array_out_of_memory) { |
| return; |
| } |
| |
| util_draw_init_info(&info); |
| |
| if (ib) { |
| if (!setup_index_buffer(st, ib, &ibuffer)) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "gl%sDrawElementsIndirect%s", |
| (draw_count > 1) ? "Multi" : "", |
| indirect_params ? "CountARB" : ""); |
| return; |
| } |
| |
| info.indexed = TRUE; |
| |
| /* Primitive restart is not handled by the VBO module in this case. */ |
| setup_primitive_restart(ctx, ib, &info); |
| } |
| |
| info.mode = translate_prim(ctx, mode); |
| info.vertices_per_patch = ctx->TessCtrlProgram.patch_vertices; |
| info.indirect = st_buffer_object(indirect_data)->buffer; |
| info.indirect_offset = indirect_offset; |
| |
| if (ST_DEBUG & DEBUG_DRAW) { |
| debug_printf("st/draw indirect: mode %s drawcount %d indexed %d\n", |
| u_prim_name(info.mode), |
| draw_count, |
| info.indexed); |
| } |
| |
| if (!st->has_multi_draw_indirect) { |
| int i; |
| |
| assert(!indirect_params); |
| info.indirect_count = 1; |
| for (i = 0; i < draw_count; i++) { |
| info.drawid = i; |
| cso_draw_vbo(st->cso_context, &info); |
| info.indirect_offset += stride; |
| } |
| } else { |
| info.indirect_count = draw_count; |
| info.indirect_stride = stride; |
| if (indirect_params) { |
| info.indirect_params = st_buffer_object(indirect_params)->buffer; |
| info.indirect_params_offset = indirect_params_offset; |
| } |
| cso_draw_vbo(st->cso_context, &info); |
| } |
| } |
| |
| |
| void |
| st_init_draw(struct st_context *st) |
| { |
| struct gl_context *ctx = st->ctx; |
| |
| vbo_set_draw_func(ctx, st_draw_vbo); |
| vbo_set_indirect_draw_func(ctx, st_indirect_draw_vbo); |
| } |
| |
| |
| void |
| st_destroy_draw(struct st_context *st) |
| { |
| draw_destroy(st->draw); |
| } |
| |
| /** |
| * Getter for the draw_context, so that initialization of it can happen only |
| * when needed (the TGSI exec machines take up quite a bit of memory). |
| */ |
| struct draw_context * |
| st_get_draw_context(struct st_context *st) |
| { |
| if (!st->draw) { |
| st->draw = draw_create(st->pipe); |
| if (!st->draw) { |
| _mesa_error(st->ctx, GL_OUT_OF_MEMORY, "feedback fallback allocation"); |
| return NULL; |
| } |
| } |
| |
| /* Disable draw options that might convert points/lines to tris, etc. |
| * as that would foul-up feedback/selection mode. |
| */ |
| draw_wide_line_threshold(st->draw, 1000.0f); |
| draw_wide_point_threshold(st->draw, 1000.0f); |
| draw_enable_line_stipple(st->draw, FALSE); |
| draw_enable_point_sprites(st->draw, FALSE); |
| |
| return st->draw; |
| } |
| |
| /** |
| * Draw a quad with given position, texcoords and color. |
| */ |
| bool |
| st_draw_quad(struct st_context *st, |
| float x0, float y0, float x1, float y1, float z, |
| float s0, float t0, float s1, float t1, |
| const float *color, |
| unsigned num_instances) |
| { |
| struct pipe_vertex_buffer vb = {0}; |
| struct st_util_vertex *verts; |
| |
| vb.stride = sizeof(struct st_util_vertex); |
| |
| u_upload_alloc(st->uploader, 0, 4 * sizeof(struct st_util_vertex), 4, |
| &vb.buffer_offset, &vb.buffer, (void **) &verts); |
| if (!vb.buffer) { |
| return false; |
| } |
| |
| /* lower-left */ |
| verts[0].x = x0; |
| verts[0].y = y1; |
| verts[0].z = z; |
| verts[0].r = color[0]; |
| verts[0].g = color[1]; |
| verts[0].b = color[2]; |
| verts[0].a = color[3]; |
| verts[0].s = s0; |
| verts[0].t = t0; |
| |
| /* lower-right */ |
| verts[1].x = x1; |
| verts[1].y = y1; |
| verts[1].z = z; |
| verts[1].r = color[0]; |
| verts[1].g = color[1]; |
| verts[1].b = color[2]; |
| verts[1].a = color[3]; |
| verts[1].s = s1; |
| verts[1].t = t0; |
| |
| /* upper-right */ |
| verts[2].x = x1; |
| verts[2].y = y0; |
| verts[2].z = z; |
| verts[2].r = color[0]; |
| verts[2].g = color[1]; |
| verts[2].b = color[2]; |
| verts[2].a = color[3]; |
| verts[2].s = s1; |
| verts[2].t = t1; |
| |
| /* upper-left */ |
| verts[3].x = x0; |
| verts[3].y = y0; |
| verts[3].z = z; |
| verts[3].r = color[0]; |
| verts[3].g = color[1]; |
| verts[3].b = color[2]; |
| verts[3].a = color[3]; |
| verts[3].s = s0; |
| verts[3].t = t1; |
| |
| u_upload_unmap(st->uploader); |
| |
| /* At the time of writing, cso_get_aux_vertex_buffer_slot() always returns |
| * zero. If that ever changes we need to audit the calls to that function |
| * and make sure the slot number is used consistently everywhere. |
| */ |
| assert(cso_get_aux_vertex_buffer_slot(st->cso_context) == 0); |
| |
| cso_set_vertex_buffers(st->cso_context, |
| cso_get_aux_vertex_buffer_slot(st->cso_context), |
| 1, &vb); |
| |
| if (num_instances > 1) { |
| cso_draw_arrays_instanced(st->cso_context, PIPE_PRIM_TRIANGLE_FAN, 0, 4, |
| 0, num_instances); |
| } else { |
| cso_draw_arrays(st->cso_context, PIPE_PRIM_TRIANGLE_FAN, 0, 4); |
| } |
| |
| pipe_resource_reference(&vb.buffer, NULL); |
| |
| return true; |
| } |
