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Diffstat (limited to 'src/glx/vertarr.c')
| -rw-r--r-- | src/glx/vertarr.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/glx/vertarr.c b/src/glx/vertarr.c new file mode 100644 index 00000000000..398cfb1e796 --- /dev/null +++ b/src/glx/vertarr.c @@ -0,0 +1,212 @@ +/* + * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) + * Copyright (C) 1991-2000 Silicon Graphics, 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, sublicense, + * 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 including the dates of first publication and + * either this permission notice or a reference to + * http://oss.sgi.com/projects/FreeB/ + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * SILICON GRAPHICS, INC. 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. + * + * Except as contained in this notice, the name of Silicon Graphics, Inc. + * shall not be used in advertising or otherwise to promote the sale, use or + * other dealings in this Software without prior written authorization from + * Silicon Graphics, Inc. + */ + +#include "glxclient.h" +#include "indirect.h" +#include "indirect_vertex_array.h" + + +/*****************************************************************************/ + +/** + * \name Vertex array pointer bridge functions + * + * When EXT_vertex_array was moved into the core GL spec, the \c count + * parameter was lost. This libGL really only wants to implement the GL 1.1 + * version, but we need to support applications that were written to the old + * interface. These bridge functions are part of the glue that makes this + * happen. + */ +/*@{*/ +void +__indirect_glColorPointerEXT(GLint size, GLenum type, GLsizei stride, + GLsizei count, const GLvoid * pointer) +{ + (void) count; + __indirect_glColorPointer(size, type, stride, pointer); +} + +void +__indirect_glEdgeFlagPointerEXT(GLsizei stride, + GLsizei count, const GLboolean * pointer) +{ + (void) count; + __indirect_glEdgeFlagPointer(stride, pointer); +} + +void +__indirect_glIndexPointerEXT(GLenum type, GLsizei stride, + GLsizei count, const GLvoid * pointer) +{ + (void) count; + __indirect_glIndexPointer(type, stride, pointer); +} + +void +__indirect_glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count, + const GLvoid * pointer) +{ + (void) count; + __indirect_glNormalPointer(type, stride, pointer); +} + +void +__indirect_glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride, + GLsizei count, const GLvoid * pointer) +{ + (void) count; + __indirect_glTexCoordPointer(size, type, stride, pointer); +} + +void +__indirect_glVertexPointerEXT(GLint size, GLenum type, GLsizei stride, + GLsizei count, const GLvoid * pointer) +{ + (void) count; + __indirect_glVertexPointer(size, type, stride, pointer); +} + +/*@}*/ + +/*****************************************************************************/ + +void +__indirect_glInterleavedArrays(GLenum format, GLsizei stride, + const GLvoid * pointer) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + +#define NONE {0, 0, 0} +#define F(x) {GL_FLOAT, x, x * sizeof(GLfloat)} +#define UB4 {GL_UNSIGNED_BYTE, 4, 4 * sizeof(GLubyte)} + + /* Each row in this array describes the elements of a particular + * interleaved array mode. Each column describes, in the order in which + * they appear in the interleaved arrays, one of the four possible types + * of vertex data that can appear in an interleaved array. + */ + struct + { + /** + * The enum describing the GL type, as would be passed to the + * appropriate gl*Pointer function. + */ + GLushort type; + + /** + * Number of elements in the subarray, as would be passed (as the + * \c size parameter) to the appropriate gl*Pointer function. + */ + GLubyte count; + + /** + * True size of a single element in the subarray, as would be passed + * (as the \c stride parameter) to the appropriate gl*Pointer + * function. + */ + GLubyte size; + } + static const modes[14][4] = { + /* texture color normal vertex */ + {NONE, NONE, NONE, F(2)}, /* GL_V2F */ + {NONE, NONE, NONE, F(3)}, /* GL_V3F */ + {NONE, UB4, NONE, F(2)}, /* GL_C4UB_V2F */ + {NONE, UB4, NONE, F(3)}, /* GL_C4UB_V3F */ + {NONE, F(3), NONE, F(3)}, /* GL_C3F_V3F */ + {NONE, NONE, F(3), F(3)}, /* GL_N3F_V3F */ + {NONE, F(4), F(3), F(3)}, /* GL_C4F_N3F_V3F */ + {F(2), NONE, NONE, F(3)}, /* GL_T2F_V3F */ + {F(4), NONE, NONE, F(4)}, /* GL_T4F_V4F */ + {F(2), UB4, NONE, F(3)}, /* GL_T2F_C4UB_V3F */ + {F(2), F(3), NONE, F(3)}, /* GL_T2F_C3F_V3F */ + {F(2), NONE, F(3), F(3)}, /* GL_T2F_N3F_V3F */ + {F(2), F(4), F(3), F(3)}, /* GL_T2F_C4F_N3F_V3F */ + {F(4), F(4), F(3), F(4)}, /* GL_T4F_C4F_N3F_V4F */ + }; +#undef NONE +#undef F +#undef UB4 + + GLint trueStride, size; + int offsets[4]; + unsigned i; + const int idx = format - GL_V2F; + + + /* All valid formats are on the range [GL_V2F, GL_V2F+0x0D]. Since idx + * is just the format biased by -GL_V2F, all valid idx values are on the + * range [0, 0x0D]. + */ + if ((idx < 0) || (idx > 0x0D)) { + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + if (stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + + /* If the 'count' for a subarray is non-zero, then the offset of its + * first element is at the currently accumulated 'size'. + */ + size = 0; + for (i = 0; i < 4; i++) { + offsets[i] = (modes[idx][i].count != 0) ? size : -1; + size += modes[idx][i].size; + } + + trueStride = (stride == 0) ? size : stride; + + __glXArrayDisableAll(state); + + if (offsets[0] >= 0) { + __indirect_glEnableClientState(GL_TEXTURE_COORD_ARRAY); + __indirect_glTexCoordPointer(modes[idx][0].count, GL_FLOAT, + trueStride, (const char *) pointer); + } + if (offsets[1] >= 0) { + __indirect_glEnableClientState(GL_COLOR_ARRAY); + __indirect_glColorPointer(modes[idx][1].count, modes[idx][1].type, + trueStride, + (const char *) pointer + offsets[1]); + } + if (offsets[2] >= 0) { + __indirect_glEnableClientState(GL_NORMAL_ARRAY); + __indirect_glNormalPointer(GL_FLOAT, trueStride, + (const char *) pointer + offsets[2]); + } + __indirect_glEnableClientState(GL_VERTEX_ARRAY); + __indirect_glVertexPointer(modes[idx][3].count, GL_FLOAT, + trueStride, + (const char *) pointer + offsets[3]); +} |