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| |
| /************************************************************************** |
| * |
| * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * Copyright 2012 Marek Olšák <maraeo@gmail.com> |
| * 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 AUTHORS 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 converts the VBO's vertex attribute/array information into |
| * Gallium vertex state and binds it. |
| * |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| * Marek Olšák <maraeo@gmail.com> |
| */ |
| |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_cb_bufferobjects.h" |
| #include "st_draw.h" |
| #include "st_program.h" |
| |
| #include "cso_cache/cso_context.h" |
| #include "util/u_math.h" |
| |
| #include "main/bufferobj.h" |
| #include "main/glformats.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 half_float_types[4] = { |
| PIPE_FORMAT_R16_FLOAT, |
| PIPE_FORMAT_R16G16_FLOAT, |
| PIPE_FORMAT_R16G16B16_FLOAT, |
| PIPE_FORMAT_R16G16B16A16_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 uint_types_int[4] = { |
| PIPE_FORMAT_R32_UINT, |
| PIPE_FORMAT_R32G32_UINT, |
| PIPE_FORMAT_R32G32B32_UINT, |
| PIPE_FORMAT_R32G32B32A32_UINT |
| }; |
| |
| 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 int_types_int[4] = { |
| PIPE_FORMAT_R32_SINT, |
| PIPE_FORMAT_R32G32_SINT, |
| PIPE_FORMAT_R32G32B32_SINT, |
| PIPE_FORMAT_R32G32B32A32_SINT |
| }; |
| |
| 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 ushort_types_int[4] = { |
| PIPE_FORMAT_R16_UINT, |
| PIPE_FORMAT_R16G16_UINT, |
| PIPE_FORMAT_R16G16B16_UINT, |
| PIPE_FORMAT_R16G16B16A16_UINT |
| }; |
| |
| 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 short_types_int[4] = { |
| PIPE_FORMAT_R16_SINT, |
| PIPE_FORMAT_R16G16_SINT, |
| PIPE_FORMAT_R16G16B16_SINT, |
| PIPE_FORMAT_R16G16B16A16_SINT |
| }; |
| |
| 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 ubyte_types_int[4] = { |
| PIPE_FORMAT_R8_UINT, |
| PIPE_FORMAT_R8G8_UINT, |
| PIPE_FORMAT_R8G8B8_UINT, |
| PIPE_FORMAT_R8G8B8A8_UINT |
| }; |
| |
| 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 |
| }; |
| |
| static GLuint byte_types_int[4] = { |
| PIPE_FORMAT_R8_SINT, |
| PIPE_FORMAT_R8G8_SINT, |
| PIPE_FORMAT_R8G8B8_SINT, |
| PIPE_FORMAT_R8G8B8A8_SINT |
| }; |
| |
| static GLuint fixed_types[4] = { |
| PIPE_FORMAT_R32_FIXED, |
| PIPE_FORMAT_R32G32_FIXED, |
| PIPE_FORMAT_R32G32B32_FIXED, |
| PIPE_FORMAT_R32G32B32A32_FIXED |
| }; |
| |
| |
| /** |
| * Return a PIPE_FORMAT_x for the given GL datatype and size. |
| */ |
| enum pipe_format |
| st_pipe_vertex_format(GLenum type, GLuint size, GLenum format, |
| GLboolean normalized, GLboolean integer) |
| { |
| assert((type >= GL_BYTE && type <= GL_DOUBLE) || |
| type == GL_FIXED || type == GL_HALF_FLOAT || |
| type == GL_INT_2_10_10_10_REV || |
| type == GL_UNSIGNED_INT_2_10_10_10_REV); |
| assert(size >= 1); |
| assert(size <= 4); |
| assert(format == GL_RGBA || format == GL_BGRA); |
| |
| if (type == GL_INT_2_10_10_10_REV || |
| type == GL_UNSIGNED_INT_2_10_10_10_REV) { |
| assert(size == 4); |
| assert(!integer); |
| |
| if (format == GL_BGRA) { |
| if (type == GL_INT_2_10_10_10_REV) { |
| if (normalized) |
| return PIPE_FORMAT_B10G10R10A2_SNORM; |
| else |
| return PIPE_FORMAT_B10G10R10A2_SSCALED; |
| } else { |
| if (normalized) |
| return PIPE_FORMAT_B10G10R10A2_UNORM; |
| else |
| return PIPE_FORMAT_B10G10R10A2_USCALED; |
| } |
| } else { |
| if (type == GL_INT_2_10_10_10_REV) { |
| if (normalized) |
| return PIPE_FORMAT_R10G10B10A2_SNORM; |
| else |
| return PIPE_FORMAT_R10G10B10A2_SSCALED; |
| } else { |
| if (normalized) |
| return PIPE_FORMAT_R10G10B10A2_UNORM; |
| else |
| return PIPE_FORMAT_R10G10B10A2_USCALED; |
| } |
| } |
| } |
| |
| if (format == GL_BGRA) { |
| /* this is an odd-ball case */ |
| assert(type == GL_UNSIGNED_BYTE); |
| assert(normalized); |
| return PIPE_FORMAT_B8G8R8A8_UNORM; |
| } |
| |
| if (integer) { |
| switch (type) { |
| case GL_INT: return int_types_int[size-1]; |
| case GL_SHORT: return short_types_int[size-1]; |
| case GL_BYTE: return byte_types_int[size-1]; |
| case GL_UNSIGNED_INT: return uint_types_int[size-1]; |
| case GL_UNSIGNED_SHORT: return ushort_types_int[size-1]; |
| case GL_UNSIGNED_BYTE: return ubyte_types_int[size-1]; |
| default: assert(0); return 0; |
| } |
| } |
| else if (normalized) { |
| switch (type) { |
| case GL_DOUBLE: return double_types[size-1]; |
| case GL_FLOAT: return float_types[size-1]; |
| case GL_HALF_FLOAT: return half_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]; |
| case GL_FIXED: return fixed_types[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_HALF_FLOAT: return half_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]; |
| case GL_FIXED: return fixed_types[size-1]; |
| default: assert(0); return 0; |
| } |
| } |
| return PIPE_FORMAT_NONE; /* silence compiler warning */ |
| } |
| |
| /** |
| * Examine the active arrays to determine if we have interleaved |
| * vertex arrays all living in one VBO, or all living in user space. |
| */ |
| static GLboolean |
| is_interleaved_arrays(const struct st_vertex_program *vp, |
| const struct st_vp_variant *vpv, |
| const struct gl_client_array **arrays) |
| { |
| GLuint attr; |
| const struct gl_buffer_object *firstBufObj = NULL; |
| GLint firstStride = -1; |
| const GLubyte *firstPtr = NULL; |
| GLboolean userSpaceBuffer = GL_FALSE; |
| |
| for (attr = 0; attr < vpv->num_inputs; attr++) { |
| const GLuint mesaAttr = vp->index_to_input[attr]; |
| const struct gl_client_array *array = arrays[mesaAttr]; |
| const struct gl_buffer_object *bufObj = array->BufferObj; |
| const GLsizei stride = array->StrideB; /* in bytes */ |
| |
| if (attr == 0) { |
| /* save info about the first array */ |
| firstStride = stride; |
| firstPtr = array->Ptr; |
| firstBufObj = bufObj; |
| userSpaceBuffer = !bufObj || !bufObj->Name; |
| } |
| else { |
| /* check if other arrays interleave with the first, in same buffer */ |
| if (stride != firstStride) |
| return GL_FALSE; /* strides don't match */ |
| |
| if (bufObj != firstBufObj) |
| return GL_FALSE; /* arrays in different VBOs */ |
| |
| if (abs(array->Ptr - firstPtr) > firstStride) |
| return GL_FALSE; /* arrays start too far apart */ |
| |
| if ((!_mesa_is_bufferobj(bufObj)) != userSpaceBuffer) |
| return GL_FALSE; /* mix of VBO and user-space arrays */ |
| } |
| } |
| |
| return GL_TRUE; |
| } |
| |
| /** |
| * Set up for drawing interleaved arrays that all live in one VBO |
| * or all live in user space. |
| * \param vbuffer returns vertex buffer info |
| * \param velements returns vertex element info |
| */ |
| static boolean |
| setup_interleaved_attribs(const struct st_vertex_program *vp, |
| const struct st_vp_variant *vpv, |
| const struct gl_client_array **arrays, |
| struct pipe_vertex_buffer *vbuffer, |
| struct pipe_vertex_element velements[]) |
| { |
| GLuint attr; |
| const GLubyte *low_addr = NULL; |
| GLboolean usingVBO; /* all arrays in a VBO? */ |
| struct gl_buffer_object *bufobj; |
| GLsizei stride; |
| |
| /* Find the lowest address of the arrays we're drawing, |
| * Init bufobj and stride. |
| */ |
| if (vpv->num_inputs) { |
| const GLuint mesaAttr0 = vp->index_to_input[0]; |
| const struct gl_client_array *array = arrays[mesaAttr0]; |
| |
| /* Since we're doing interleaved arrays, we know there'll be at most |
| * one buffer object and the stride will be the same for all arrays. |
| * Grab them now. |
| */ |
| bufobj = array->BufferObj; |
| stride = array->StrideB; |
| |
| low_addr = arrays[vp->index_to_input[0]]->Ptr; |
| |
| for (attr = 1; attr < vpv->num_inputs; attr++) { |
| const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr; |
| low_addr = MIN2(low_addr, start); |
| } |
| } |
| else { |
| /* not sure we'll ever have zero inputs, but play it safe */ |
| bufobj = NULL; |
| stride = 0; |
| low_addr = 0; |
| } |
| |
| /* are the arrays in user space? */ |
| usingVBO = _mesa_is_bufferobj(bufobj); |
| |
| for (attr = 0; attr < vpv->num_inputs; attr++) { |
| const GLuint mesaAttr = vp->index_to_input[attr]; |
| const struct gl_client_array *array = arrays[mesaAttr]; |
| unsigned src_offset = (unsigned) (array->Ptr - low_addr); |
| |
| assert(array->_ElementSize == |
| _mesa_bytes_per_vertex_attrib(array->Size, array->Type)); |
| |
| velements[attr].src_offset = src_offset; |
| velements[attr].instance_divisor = array->InstanceDivisor; |
| velements[attr].vertex_buffer_index = 0; |
| velements[attr].src_format = st_pipe_vertex_format(array->Type, |
| array->Size, |
| array->Format, |
| array->Normalized, |
| array->Integer); |
| assert(velements[attr].src_format); |
| } |
| |
| /* |
| * Return the vbuffer info and setup user-space attrib info, if needed. |
| */ |
| if (vpv->num_inputs == 0) { |
| /* just defensive coding here */ |
| vbuffer->buffer = NULL; |
| vbuffer->user_buffer = NULL; |
| vbuffer->buffer_offset = 0; |
| vbuffer->stride = 0; |
| } |
| else if (usingVBO) { |
| /* all interleaved arrays in a VBO */ |
| struct st_buffer_object *stobj = st_buffer_object(bufobj); |
| |
| if (!stobj || !stobj->buffer) { |
| return FALSE; /* out-of-memory error probably */ |
| } |
| |
| vbuffer->buffer = stobj->buffer; |
| vbuffer->user_buffer = NULL; |
| vbuffer->buffer_offset = pointer_to_offset(low_addr); |
| vbuffer->stride = stride; |
| } |
| else { |
| /* all interleaved arrays in user memory */ |
| vbuffer->buffer = NULL; |
| vbuffer->user_buffer = low_addr; |
| vbuffer->buffer_offset = 0; |
| vbuffer->stride = stride; |
| } |
| return TRUE; |
| } |
| |
| /** |
| * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each |
| * vertex attribute. |
| * \param vbuffer returns vertex buffer info |
| * \param velements returns vertex element info |
| */ |
| static boolean |
| setup_non_interleaved_attribs(struct st_context *st, |
| const struct st_vertex_program *vp, |
| const struct st_vp_variant *vpv, |
| const struct gl_client_array **arrays, |
| struct pipe_vertex_buffer vbuffer[], |
| struct pipe_vertex_element velements[]) |
| { |
| struct gl_context *ctx = st->ctx; |
| GLuint attr; |
| |
| for (attr = 0; attr < vpv->num_inputs; attr++) { |
| const GLuint mesaAttr = vp->index_to_input[attr]; |
| const struct gl_client_array *array = arrays[mesaAttr]; |
| struct gl_buffer_object *bufobj = array->BufferObj; |
| GLsizei stride = array->StrideB; |
| |
| assert(array->_ElementSize == |
| _mesa_bytes_per_vertex_attrib(array->Size, array->Type)); |
| |
| if (_mesa_is_bufferobj(bufobj)) { |
| /* 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); |
| |
| if (!stobj || !stobj->buffer) { |
| return FALSE; /* out-of-memory error probably */ |
| } |
| |
| vbuffer[attr].buffer = stobj->buffer; |
| vbuffer[attr].user_buffer = NULL; |
| vbuffer[attr].buffer_offset = pointer_to_offset(array->Ptr); |
| } |
| else { |
| /* wrap user data */ |
| void *ptr; |
| |
| if (array->Ptr) { |
| ptr = (void *) array->Ptr; |
| } |
| else { |
| /* no array, use ctx->Current.Attrib[] value */ |
| ptr = (void *) ctx->Current.Attrib[mesaAttr]; |
| stride = 0; |
| } |
| |
| assert(ptr); |
| |
| vbuffer[attr].buffer = NULL; |
| vbuffer[attr].user_buffer = ptr; |
| vbuffer[attr].buffer_offset = 0; |
| } |
| |
| /* common-case setup */ |
| vbuffer[attr].stride = stride; /* in bytes */ |
| |
| velements[attr].src_offset = 0; |
| velements[attr].instance_divisor = array->InstanceDivisor; |
| velements[attr].vertex_buffer_index = attr; |
| velements[attr].src_format = st_pipe_vertex_format(array->Type, |
| array->Size, |
| array->Format, |
| array->Normalized, |
| array->Integer); |
| assert(velements[attr].src_format); |
| } |
| return TRUE; |
| } |
| |
| static void update_array(struct st_context *st) |
| { |
| struct gl_context *ctx = st->ctx; |
| const struct gl_client_array **arrays = ctx->Array._DrawArrays; |
| const struct st_vertex_program *vp; |
| const struct st_vp_variant *vpv; |
| struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS]; |
| struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS]; |
| unsigned num_vbuffers, num_velements; |
| |
| st->vertex_array_out_of_memory = FALSE; |
| |
| /* No drawing has been done yet, so do nothing. */ |
| if (!arrays) |
| return; |
| |
| /* vertex program validation must be done before this */ |
| vp = st->vp; |
| vpv = st->vp_variant; |
| |
| memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs); |
| |
| /* |
| * Setup the vbuffer[] and velements[] arrays. |
| */ |
| if (is_interleaved_arrays(vp, vpv, arrays)) { |
| if (!setup_interleaved_attribs(vp, vpv, arrays, vbuffer, velements)) { |
| st->vertex_array_out_of_memory = TRUE; |
| return; |
| } |
| |
| num_vbuffers = 1; |
| num_velements = vpv->num_inputs; |
| if (num_velements == 0) |
| num_vbuffers = 0; |
| } |
| else { |
| if (!setup_non_interleaved_attribs(st, vp, vpv, arrays, vbuffer, |
| velements)) { |
| st->vertex_array_out_of_memory = TRUE; |
| return; |
| } |
| |
| num_vbuffers = vpv->num_inputs; |
| num_velements = vpv->num_inputs; |
| } |
| |
| cso_set_vertex_buffers(st->cso_context, 0, num_vbuffers, vbuffer); |
| if (st->last_num_vbuffers > num_vbuffers) { |
| /* Unbind remaining buffers, if any. */ |
| cso_set_vertex_buffers(st->cso_context, num_vbuffers, |
| st->last_num_vbuffers - num_vbuffers, NULL); |
| } |
| st->last_num_vbuffers = num_vbuffers; |
| cso_set_vertex_elements(st->cso_context, num_velements, velements); |
| } |
| |
| |
| const struct st_tracked_state st_update_array = { |
| "st_update_array", /* name */ |
| { /* dirty */ |
| 0, /* mesa */ |
| ST_NEW_VERTEX_ARRAYS | ST_NEW_VERTEX_PROGRAM, /* st */ |
| }, |
| update_array /* update */ |
| }; |