/************************************************************************** * * Copyright 2007 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. * **************************************************************************/ /* * Authors: * Keith Whitwell */ #include "main/imports.h" #include "main/image.h" #include "vbo/vbo.h" #include "st_atom.h" #include "st_cache.h" #include "st_context.h" #include "st_cb_bufferobjects.h" #include "st_draw.h" #include "st_program.h" #include "pipe/p_context.h" #include "pipe/p_defines.h" #include "pipe/p_winsys.h" #include "pipe/draw/draw_private.h" #include "pipe/draw/draw_context.h" static GLuint double_types[4] = { PIPE_FORMAT_R64_FLOAT, PIPE_FORMAT_R64G64_FLOAT, PIPE_FORMAT_R64G64B64_FLOAT, PIPE_FORMAT_R64G64B64A64_FLOAT }; static GLuint float_types[4] = { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT }; static GLuint uint_types_norm[4] = { PIPE_FORMAT_R32_UNORM, PIPE_FORMAT_R32G32_UNORM, PIPE_FORMAT_R32G32B32_UNORM, PIPE_FORMAT_R32G32B32A32_UNORM }; static GLuint uint_types_scale[4] = { PIPE_FORMAT_R32_USCALED, PIPE_FORMAT_R32G32_USCALED, PIPE_FORMAT_R32G32B32_USCALED, PIPE_FORMAT_R32G32B32A32_USCALED }; static GLuint int_types_norm[4] = { PIPE_FORMAT_R32_SNORM, PIPE_FORMAT_R32G32_SNORM, PIPE_FORMAT_R32G32B32_SNORM, PIPE_FORMAT_R32G32B32A32_SNORM }; static GLuint int_types_scale[4] = { PIPE_FORMAT_R32_SSCALED, PIPE_FORMAT_R32G32_SSCALED, PIPE_FORMAT_R32G32B32_SSCALED, PIPE_FORMAT_R32G32B32A32_SSCALED }; static GLuint ushort_types_norm[4] = { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM, PIPE_FORMAT_R16G16B16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM }; static GLuint ushort_types_scale[4] = { PIPE_FORMAT_R16_USCALED, PIPE_FORMAT_R16G16_USCALED, PIPE_FORMAT_R16G16B16_USCALED, PIPE_FORMAT_R16G16B16A16_USCALED }; static GLuint short_types_norm[4] = { PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM }; static GLuint short_types_scale[4] = { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16_SSCALED, PIPE_FORMAT_R16G16B16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED }; static GLuint ubyte_types_norm[4] = { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, PIPE_FORMAT_R8G8B8_UNORM, PIPE_FORMAT_R8G8B8A8_UNORM }; static GLuint ubyte_types_scale[4] = { PIPE_FORMAT_R8_USCALED, PIPE_FORMAT_R8G8_USCALED, PIPE_FORMAT_R8G8B8_USCALED, PIPE_FORMAT_R8G8B8A8_USCALED }; static GLuint byte_types_norm[4] = { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM }; static GLuint byte_types_scale[4] = { PIPE_FORMAT_R8_SSCALED, PIPE_FORMAT_R8G8_SSCALED, PIPE_FORMAT_R8G8B8_SSCALED, PIPE_FORMAT_R8G8B8A8_SSCALED }; /** * Return a PIPE_FORMAT_x for the given GL datatype and size. */ static GLuint pipe_vertex_format(GLenum type, GLuint size, GLboolean normalized) { assert(type >= GL_BYTE); assert(type <= GL_DOUBLE); assert(size >= 1); assert(size <= 4); if (normalized) { switch (type) { case GL_DOUBLE: return double_types[size-1]; case GL_FLOAT: return float_types[size-1]; case GL_INT: return int_types_norm[size-1]; case GL_SHORT: return short_types_norm[size-1]; case GL_BYTE: return byte_types_norm[size-1]; case GL_UNSIGNED_INT: return uint_types_norm[size-1]; case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1]; case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1]; default: assert(0); return 0; } } else { switch (type) { case GL_DOUBLE: return double_types[size-1]; case GL_FLOAT: return float_types[size-1]; case GL_INT: return int_types_scale[size-1]; case GL_SHORT: return short_types_scale[size-1]; case GL_BYTE: return byte_types_scale[size-1]; case GL_UNSIGNED_INT: return uint_types_scale[size-1]; case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1]; case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1]; default: assert(0); return 0; } } return 0; /* silence compiler warning */ } /** * The default attribute buffer is basically a copy of the * ctx->Current.Attrib[] array. It's used when the vertex program * references an attribute for which we don't have a VBO/array. */ static void create_default_attribs_buffer(struct st_context *st) { struct pipe_context *pipe = st->pipe; st->default_attrib_buffer = pipe->winsys->buffer_create( pipe->winsys, 32, 0, 0 ); } static void destroy_default_attribs_buffer(struct st_context *st) { struct pipe_context *pipe = st->pipe; pipe->winsys->buffer_reference(pipe->winsys, &st->default_attrib_buffer, NULL); } /** * 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 pipe. */ void st_draw_vbo(GLcontext *ctx, const struct gl_client_array **arrays, const struct _mesa_prim *prims, GLuint nr_prims, const struct _mesa_index_buffer *ib, GLuint min_index, GLuint max_index) { struct pipe_context *pipe = ctx->st->pipe; struct pipe_winsys *winsys = pipe->winsys; const struct st_vertex_program *vp; const struct pipe_shader_state *vs; struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS]; GLuint attr; /* sanity check for pointer arithmetic below */ assert(sizeof(arrays[0]->Ptr[0]) == 1); st_validate_state(ctx->st); /* must get these after state validation! */ vp = ctx->st->vp; vs = &ctx->st->state.vs->state; /* loop over TGSI shader inputs to determine vertex buffer * and attribute info */ for (attr = 0; attr < vs->num_inputs; attr++) { const GLuint mesaAttr = vp->index_to_input[attr]; struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; struct pipe_vertex_element velement; if (bufobj && bufobj->Name) { /* Attribute data is in a VBO. * Recall that for VBOs, the gl_client_array->Ptr field is * really an offset from the start of the VBO, not a pointer. */ struct st_buffer_object *stobj = st_buffer_object(bufobj); assert(stobj->buffer); vbuffer[attr].buffer = NULL; winsys->buffer_reference(winsys, &vbuffer[attr].buffer, stobj->buffer); vbuffer[attr].buffer_offset = (unsigned) arrays[0]->Ptr;/* in bytes */ velement.src_offset = arrays[mesaAttr]->Ptr - arrays[0]->Ptr; assert(velement.src_offset <= 2048); /* 11-bit field */ } else { /* attribute data is in user-space memory, not a VBO */ uint bytes = (arrays[mesaAttr]->Size * _mesa_sizeof_type(arrays[mesaAttr]->Type) * (max_index + 1)); /* wrap user data */ vbuffer[attr].buffer = winsys->user_buffer_create(winsys, (void *) arrays[mesaAttr]->Ptr, bytes); vbuffer[attr].buffer_offset = 0; velement.src_offset = 0; } /* common-case setup */ vbuffer[attr].pitch = arrays[mesaAttr]->StrideB; /* in bytes */ vbuffer[attr].max_index = 0; /* need this? */ velement.vertex_buffer_index = attr; velement.dst_offset = 0; /* need this? */ velement.src_format = pipe_vertex_format(arrays[mesaAttr]->Type, arrays[mesaAttr]->Size, arrays[mesaAttr]->Normalized); assert(velement.src_format); /* tell pipe about this attribute */ pipe->set_vertex_buffer(pipe, attr, &vbuffer[attr]); pipe->set_vertex_element(pipe, attr, &velement); } /* do actual drawing */ if (ib) { /* indexed primitive */ struct gl_buffer_object *bufobj = ib->obj; struct pipe_buffer_handle *indexBuf = NULL; unsigned indexSize, indexOffset, i; switch (ib->type) { case GL_UNSIGNED_INT: indexSize = 4; break; case GL_UNSIGNED_SHORT: indexSize = 2; break; case GL_UNSIGNED_BYTE: indexSize = 1; break; default: assert(0); } /* get/create the index buffer object */ if (bufobj && bufobj->Name) { /* elements/indexes are in a real VBO */ struct st_buffer_object *stobj = st_buffer_object(bufobj); winsys->buffer_reference(winsys, &indexBuf, stobj->buffer); indexOffset = (unsigned) ib->ptr / indexSize; } else { /* element/indicies are in user space memory */ indexBuf = winsys->user_buffer_create(winsys, (void *) ib->ptr, ib->count * indexSize); indexOffset = 0; } /* draw */ for (i = 0; i < nr_prims; i++) { pipe->draw_elements(pipe, indexBuf, indexSize, prims[i].mode, prims[i].start + indexOffset, prims[i].count); } winsys->buffer_reference(winsys, &indexBuf, NULL); } else { /* non-indexed */ GLuint i; for (i = 0; i < nr_prims; i++) { pipe->draw_arrays(pipe, prims[i].mode, prims[i].start, prims[i].count); } } /* unreference buffers (frees wrapped user-space buffer objects) */ for (attr = 0; attr < vs->num_inputs; attr++) { winsys->buffer_reference(winsys, &vbuffer[attr].buffer, NULL); assert(!vbuffer[attr].buffer); pipe->set_vertex_buffer(pipe, attr, &vbuffer[attr]); } } /** * Utility function for drawing simple primitives (such as quads for * glClear and glDrawPixels). Coordinates are in screen space. * \param mode one of PIPE_PRIM_x * \param numVertex number of vertices * \param verts vertex data (all attributes are float[4]) * \param numAttribs number of attributes per vertex */ void st_draw_vertices(GLcontext *ctx, unsigned prim, unsigned numVertex, float *verts, unsigned numAttribs) { const float width = ctx->DrawBuffer->Width; const float height = ctx->DrawBuffer->Height; const unsigned vertex_bytes = numVertex * numAttribs * 4 * sizeof(float); struct pipe_context *pipe = ctx->st->pipe; struct pipe_buffer_handle *vbuf; struct pipe_vertex_buffer vbuffer; struct pipe_vertex_element velement; unsigned i; assert(numAttribs > 0); /* convert to clip coords */ for (i = 0; i < numVertex; i++) { float x = verts[i * numAttribs * 4 + 0]; float y = verts[i * numAttribs * 4 + 1]; x = x / width * 2.0 - 1.0; y = y / height * 2.0 - 1.0; verts[i * numAttribs * 4 + 0] = x; verts[i * numAttribs * 4 + 1] = y; } /* XXX create one-time */ vbuf = pipe->winsys->buffer_create(pipe->winsys, 32, 0, 0); pipe->winsys->buffer_data(pipe->winsys, vbuf, vertex_bytes, verts, PIPE_BUFFER_USAGE_VERTEX); /* tell pipe about the vertex buffer */ vbuffer.buffer = vbuf; vbuffer.pitch = numAttribs * 4 * sizeof(float); /* vertex size */ vbuffer.buffer_offset = 0; pipe->set_vertex_buffer(pipe, 0, &vbuffer); /* tell pipe about the vertex attributes */ for (i = 0; i < numAttribs; i++) { velement.src_offset = i * 4 * sizeof(GLfloat); velement.vertex_buffer_index = 0; velement.src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; velement.dst_offset = 0; pipe->set_vertex_element(pipe, i, &velement); } /* draw */ pipe->draw_arrays(pipe, prim, 0, numVertex); /* XXX: do one-time */ pipe->winsys->buffer_reference(pipe->winsys, &vbuf, NULL); } /** * Set the (private) draw module's post-transformed vertex format when in * GL_SELECT or GL_FEEDBACK mode or for glRasterPos. */ static void set_feedback_vertex_format(GLcontext *ctx) { struct st_context *st = ctx->st; struct vertex_info vinfo; GLuint i; if (ctx->RenderMode == GL_SELECT) { assert(ctx->RenderMode == GL_SELECT); vinfo.num_attribs = 1; vinfo.format[0] = FORMAT_4F; vinfo.interp_mode[0] = INTERP_NONE; } else { /* GL_FEEDBACK, or glRasterPos */ /* emit all attribs (pos, color, texcoord) as GLfloat[4] */ vinfo.num_attribs = st->state.vs->state.num_outputs; for (i = 0; i < vinfo.num_attribs; i++) { vinfo.format[i] = FORMAT_4F; vinfo.interp_mode[i] = INTERP_LINEAR; } } draw_set_vertex_info(st->draw, &vinfo); } /** * Called by VBO to draw arrays when in selection or feedback mode and * to implement glRasterPos. * This is very much like the normal draw_vbo() function above. * Look at code refactoring some day. * Might move this into the failover module some day. */ void st_feedback_draw_vbo(GLcontext *ctx, const struct gl_client_array **arrays, const struct _mesa_prim *prims, GLuint nr_prims, const struct _mesa_index_buffer *ib, GLuint min_index, GLuint max_index) { struct st_context *st = ctx->st; struct pipe_context *pipe = st->pipe; struct draw_context *draw = st->draw; struct pipe_winsys *winsys = pipe->winsys; const struct st_vertex_program *vp; const struct pipe_shader_state *vs; struct pipe_buffer_handle *index_buffer_handle = 0; struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS]; GLuint attr, i; ubyte *mapped_constants; assert(draw); st_validate_state(ctx->st); /* must get these after state validation! */ vp = ctx->st->vp; vs = &ctx->st->state.vs->state; /* * Set up the draw module's state. * * We'd like to do this less frequently, but the normal state-update * code sends state updates to the pipe, not to our private draw module. */ assert(draw); draw_set_viewport_state(draw, &st->state.viewport); draw_set_clip_state(draw, &st->state.clip); draw_set_rasterizer_state(draw, &st->state.rasterizer->state); draw_bind_vertex_shader(draw, st->state.vs->data); set_feedback_vertex_format(ctx); /* loop over TGSI shader inputs to determine vertex buffer * and attribute info */ for (attr = 0; attr < vs->num_inputs; attr++) { const GLuint mesaAttr = vp->index_to_input[attr]; struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; struct pipe_vertex_element velement; void *map; if (bufobj && bufobj->Name) { /* Attribute data is in a VBO. * Recall that for VBOs, the gl_client_array->Ptr field is * really an offset from the start of the VBO, not a pointer. */ struct st_buffer_object *stobj = st_buffer_object(bufobj); assert(stobj->buffer); vbuffer[attr].buffer = NULL; winsys->buffer_reference(winsys, &vbuffer[attr].buffer, stobj->buffer); vbuffer[attr].buffer_offset = (unsigned) arrays[0]->Ptr;/* in bytes */ velement.src_offset = arrays[mesaAttr]->Ptr - arrays[0]->Ptr; } else { /* attribute data is in user-space memory, not a VBO */ uint bytes = (arrays[mesaAttr]->Size * _mesa_sizeof_type(arrays[mesaAttr]->Type) * (max_index + 1)); /* wrap user data */ vbuffer[attr].buffer = winsys->user_buffer_create(winsys, (void *) arrays[mesaAttr]->Ptr, bytes); vbuffer[attr].buffer_offset = 0; velement.src_offset = 0; } /* common-case setup */ vbuffer[attr].pitch = arrays[mesaAttr]->StrideB; /* in bytes */ vbuffer[attr].max_index = 0; /* need this? */ velement.vertex_buffer_index = attr; velement.dst_offset = 0; /* need this? */ velement.src_format = pipe_vertex_format(arrays[mesaAttr]->Type, arrays[mesaAttr]->Size, arrays[mesaAttr]->Normalized); assert(velement.src_format); /* tell draw about this attribute */ draw_set_vertex_buffer(draw, attr, &vbuffer[attr]); draw_set_vertex_element(draw, attr, &velement); /* map the attrib buffer */ map = pipe->winsys->buffer_map(pipe->winsys, vbuffer[attr].buffer, PIPE_BUFFER_FLAG_READ); draw_set_mapped_vertex_buffer(draw, attr, map); } if (ib) { unsigned indexSize; struct gl_buffer_object *bufobj = ib->obj; struct st_buffer_object *stobj = st_buffer_object(bufobj); index_buffer_handle = stobj->buffer; void *map; switch (ib->type) { case GL_UNSIGNED_INT: indexSize = 4; break; case GL_UNSIGNED_SHORT: indexSize = 2; break; default: assert(0); } map = pipe->winsys->buffer_map(pipe->winsys, index_buffer_handle, PIPE_BUFFER_FLAG_READ); draw_set_mapped_element_buffer(draw, indexSize, map); } else { /* no index/element buffer */ draw_set_mapped_element_buffer(draw, 0, NULL); } /* map constant buffers */ mapped_constants = winsys->buffer_map(winsys, st->state.constants[PIPE_SHADER_VERTEX].buffer, PIPE_BUFFER_FLAG_READ); draw_set_mapped_constant_buffer(st->draw, mapped_constants); /* draw here */ for (i = 0; i < nr_prims; i++) { draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count); } /* unmap constant buffers */ winsys->buffer_unmap(winsys, st->state.constants[PIPE_SHADER_VERTEX].buffer); /* * unmap vertex/index buffers */ for (i = 0; i < PIPE_ATTRIB_MAX; i++) { if (draw->vertex_buffer[i].buffer) { pipe->winsys->buffer_unmap(pipe->winsys, draw->vertex_buffer[i].buffer); draw_set_mapped_vertex_buffer(draw, i, NULL); } } if (ib) { pipe->winsys->buffer_unmap(pipe->winsys, index_buffer_handle); draw_set_mapped_element_buffer(draw, 0, NULL); } } void st_init_draw( struct st_context *st ) { GLcontext *ctx = st->ctx; /* actually, not used here, but elsewhere */ create_default_attribs_buffer(st); vbo_set_draw_func(ctx, st_draw_vbo); } void st_destroy_draw( struct st_context *st ) { destroy_default_attribs_buffer(st); }