src/glx/indirect_vertex_program.c

   1 /*
   2  * (C) Copyright IBM Corporation 2005
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * IBM,
  20  * AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  22  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include <inttypes.h>
  27 #include <GL/gl.h>
  28 #include "indirect.h"
  29 #include "glxclient.h"
  30 #include "indirect_vertex_array.h"
  31 #include <GL/glxproto.h>
  32
  33 #if !defined(__GNUC__)
  34 #  define __builtin_expect(x, y) x
  35 #endif
  36
  37 static void
  38 do_vertex_attrib_enable(GLuint index, GLboolean val)
  39 {
  40    struct glx_context *gc = __glXGetCurrentContext();
  41    __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
  42
  43    if (!__glXSetArrayEnable(state, GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB,
  44                             index, val)) {
  45       __glXSetError(gc, GL_INVALID_ENUM);
  46    }
  47 }
  48
  49
  50 void
  51 __indirect_glEnableVertexAttribArray(GLuint index)
  52 {
  53    do_vertex_attrib_enable(index, GL_TRUE);
  54 }
  55
  56
  57 void
  58 __indirect_glDisableVertexAttribArray(GLuint index)
  59 {
  60    do_vertex_attrib_enable(index, GL_FALSE);
  61 }
  62
  63
  64 static void
  65 get_parameter(unsigned opcode, unsigned size, GLenum target, GLuint index,
  66               void *params)
  67 {
  68    struct glx_context *const gc = __glXGetCurrentContext();
  69    Display *const dpy = gc->currentDpy;
  70    const GLuint cmdlen = 12;
  71
  72    if (__builtin_expect(dpy != NULL, 1)) {
  73       GLubyte const *pc = __glXSetupVendorRequest(gc,
  74                                                   X_GLXVendorPrivateWithReply,
  75                                                   opcode, cmdlen);
  76
  77       *((GLenum *) (pc + 0)) = target;
  78       *((GLuint *) (pc + 4)) = index;
  79       *((GLuint *) (pc + 8)) = 0;
  80
  81       (void) __glXReadReply(dpy, size, params, GL_FALSE);
  82       UnlockDisplay(dpy);
  83       SyncHandle();
  84    }
  85    return;
  86 }
  87
  88
  89 void
  90 __indirect_glGetProgramEnvParameterfvARB(GLenum target, GLuint index,
  91                                          GLfloat * params)
  92 {
  93    get_parameter(1296, 4, target, index, params);
  94 }
  95
  96
  97 void
  98 __indirect_glGetProgramEnvParameterdvARB(GLenum target, GLuint index,
  99                                          GLdouble * params)
 100 {
 101    get_parameter(1297, 8, target, index, params);
 102 }
 103
 104
 105 void
 106 __indirect_glGetProgramLocalParameterfvARB(GLenum target, GLuint index,
 107                                            GLfloat * params)
 108 {
 109    get_parameter(1305, 4, target, index, params);
 110 }
 111
 112
 113 void
 114 __indirect_glGetProgramLocalParameterdvARB(GLenum target, GLuint index,
 115                                            GLdouble * params)
 116 {
 117    get_parameter(1306, 8, target, index, params);
 118 }
 119
 120
 121 void
 122 __indirect_glGetVertexAttribPointerv(GLuint index, GLenum pname,
 123                                        GLvoid ** pointer)
 124 {
 125    struct glx_context *const gc = __glXGetCurrentContext();
 126    __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
 127
 128    if (pname != GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB) {
 129       __glXSetError(gc, GL_INVALID_ENUM);
 130    }
 131
 132    if (!__glXGetArrayPointer(state, GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB,
 133                              index, pointer)) {
 134       __glXSetError(gc, GL_INVALID_VALUE);
 135    }
 136 }
 137
 138
 139 /**
 140  * Get the selected attribute from the vertex array state vector.
 141  *
 142  * \returns
 143  * On success \c GL_TRUE is returned.  Otherwise, \c GL_FALSE is returned.
 144  */
 145 static GLboolean
 146 get_attrib_array_data(__GLXattribute * state, GLuint index, GLenum cap,
 147                       GLintptr * data)
 148 {
 149    GLboolean retval = GL_FALSE;
 150    const GLenum attrib = GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB;
 151
 152    switch (cap) {
 153    case GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB:
 154       retval = __glXGetArrayEnable(state, attrib, index, data);
 155       break;
 156
 157    case GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB:
 158       retval = __glXGetArraySize(state, attrib, index, data);
 159       break;
 160
 161    case GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB:
 162       retval = __glXGetArrayStride(state, attrib, index, data);
 163       break;
 164
 165    case GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB:
 166       retval = __glXGetArrayType(state, attrib, index, data);
 167       break;
 168
 169    case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB:
 170       retval = __glXGetArrayNormalized(state, attrib, index, data);
 171       break;
 172    }
 173
 174
 175    return retval;
 176 }
 177
 178
 179 static void
 180 get_vertex_attrib(struct glx_context * gc, unsigned vop,
 181                   GLuint index, GLenum pname, xReply * reply)
 182 {
 183    Display *const dpy = gc->currentDpy;
 184    GLubyte *const pc = __glXSetupVendorRequest(gc,
 185                                                X_GLXVendorPrivateWithReply,
 186                                                vop, 8);
 187
 188    *((uint32_t *) (pc + 0)) = index;
 189    *((uint32_t *) (pc + 4)) = pname;
 190
 191    (void) _XReply(dpy, reply, 0, False);
 192 }
 193
 194
 195 void
 196 __indirect_glGetVertexAttribiv(GLuint index, GLenum pname, GLint * params)
 197 {
 198    struct glx_context *const gc = __glXGetCurrentContext();
 199    Display *const dpy = gc->currentDpy;
 200    __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
 201    xGLXSingleReply reply;
 202
 203
 204    get_vertex_attrib(gc, 1303, index, pname, (xReply *) & reply);
 205
 206    if (reply.size != 0) {
 207       GLintptr data;
 208
 209
 210       if (get_attrib_array_data(state, index, pname, &data)) {
 211          *params = (GLint) data;
 212       }
 213       else {
 214          if (reply.size == 1) {
 215             *params = (GLint) reply.pad3;
 216          }
 217          else {
 218             _XRead(dpy, (void *) params, 4 * reply.size);
 219          }
 220       }
 221    }
 222
 223    UnlockDisplay(dpy);
 224    SyncHandle();
 225 }
 226
 227
 228 void
 229 __indirect_glGetVertexAttribfv(GLuint index, GLenum pname,
 230                                   GLfloat * params)
 231 {
 232    struct glx_context *const gc = __glXGetCurrentContext();
 233    Display *const dpy = gc->currentDpy;
 234    __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
 235    xGLXSingleReply reply;
 236
 237
 238    get_vertex_attrib(gc, 1302, index, pname, (xReply *) & reply);
 239
 240    if (reply.size != 0) {
 241       GLintptr data;
 242
 243
 244       if (get_attrib_array_data(state, index, pname, &data)) {
 245          *params = (GLfloat) data;
 246       }
 247       else {
 248          if (reply.size == 1) {
 249             (void) memcpy(params, &reply.pad3, sizeof(GLfloat));
 250          }
 251          else {
 252             _XRead(dpy, (void *) params, 4 * reply.size);
 253          }
 254       }
 255    }
 256
 257    UnlockDisplay(dpy);
 258    SyncHandle();
 259 }
 260
 261
 262 void
 263 __indirect_glGetVertexAttribdv(GLuint index, GLenum pname,
 264                                   GLdouble * params)
 265 {
 266    struct glx_context *const gc = __glXGetCurrentContext();
 267    Display *const dpy = gc->currentDpy;
 268    __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
 269    xGLXSingleReply reply;
 270
 271
 272    get_vertex_attrib(gc, 1301, index, pname, (xReply *) & reply);
 273
 274    if (reply.size != 0) {
 275       GLintptr data;
 276
 277
 278       if (get_attrib_array_data(state, index, pname, &data)) {
 279          *params = (GLdouble) data;
 280       }
 281       else {
 282          if (reply.size == 1) {
 283             (void) memcpy(params, &reply.pad3, sizeof(GLdouble));
 284          }
 285          else {
 286             _XRead(dpy, (void *) params, 8 * reply.size);
 287          }
 288       }
 289    }
 290
 291    UnlockDisplay(dpy);
 292    SyncHandle();
 293 }