3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 #include "api_validate.h"
35 _mesa_validate_DrawElements(GLcontext
*ctx
,
36 GLenum mode
, GLsizei count
, GLenum type
,
37 const GLvoid
*indices
)
39 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
43 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDrawElements(count)" );
47 if (mode
> GL_POLYGON
) {
48 _mesa_error(ctx
, GL_INVALID_ENUM
, "glDrawElements(mode)" );
52 if (type
!= GL_UNSIGNED_INT
&&
53 type
!= GL_UNSIGNED_BYTE
&&
54 type
!= GL_UNSIGNED_SHORT
)
56 _mesa_error(ctx
, GL_INVALID_ENUM
, "glDrawElements(type)" );
61 _mesa_update_state(ctx
);
63 /* Always need vertex positions */
64 if (!ctx
->Array
.Vertex
.Enabled
65 && !(ctx
->VertexProgram
.Enabled
&& ctx
->Array
.VertexAttrib
[0].Enabled
))
68 if (ctx
->Const
.CheckArrayBounds
) {
69 /* find max array index */
72 if (type
== GL_UNSIGNED_INT
) {
73 for (i
= 0; i
< count
; i
++)
74 if (((GLuint
*) indices
)[i
] > max
)
75 max
= ((GLuint
*) indices
)[i
];
77 else if (type
== GL_UNSIGNED_SHORT
) {
78 for (i
= 0; i
< count
; i
++)
79 if (((GLushort
*) indices
)[i
] > max
)
80 max
= ((GLushort
*) indices
)[i
];
83 ASSERT(type
== GL_UNSIGNED_BYTE
);
84 for (i
= 0; i
< count
; i
++)
85 if (((GLubyte
*) indices
)[i
] > max
)
86 max
= ((GLubyte
*) indices
)[i
];
88 if (max
>= ctx
->Array
._MaxElement
) {
89 /* the max element is out of bounds of one or more enabled arrays */
99 _mesa_validate_DrawRangeElements(GLcontext
*ctx
, GLenum mode
,
100 GLuint start
, GLuint end
,
101 GLsizei count
, GLenum type
,
102 const GLvoid
*indices
)
104 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
108 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDrawRangeElements(count)" );
112 if (mode
> GL_POLYGON
) {
113 _mesa_error(ctx
, GL_INVALID_ENUM
, "glDrawRangeElements(mode)" );
118 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDrawRangeElements(end<start)");
122 if (type
!= GL_UNSIGNED_INT
&&
123 type
!= GL_UNSIGNED_BYTE
&&
124 type
!= GL_UNSIGNED_SHORT
) {
125 _mesa_error(ctx
, GL_INVALID_ENUM
, "glDrawRangeElements(type)" );
130 _mesa_update_state(ctx
);
132 /* Always need vertex positions */
133 if (!ctx
->Array
.Vertex
.Enabled
134 && !(ctx
->VertexProgram
.Enabled
&& ctx
->Array
.VertexAttrib
[0].Enabled
))
137 if (ctx
->Const
.CheckArrayBounds
) {
138 /* Find max array index.
139 * We don't trust the user's start and end values.
143 if (type
== GL_UNSIGNED_INT
) {
144 for (i
= 0; i
< count
; i
++)
145 if (((GLuint
*) indices
)[i
] > max
)
146 max
= ((GLuint
*) indices
)[i
];
148 else if (type
== GL_UNSIGNED_SHORT
) {
149 for (i
= 0; i
< count
; i
++)
150 if (((GLushort
*) indices
)[i
] > max
)
151 max
= ((GLushort
*) indices
)[i
];
154 ASSERT(type
== GL_UNSIGNED_BYTE
);
155 for (i
= 0; i
< count
; i
++)
156 if (((GLubyte
*) indices
)[i
] > max
)
157 max
= ((GLubyte
*) indices
)[i
];
159 if (max
>= ctx
->Array
._MaxElement
) {
160 /* the max element is out of bounds of one or more enabled arrays */
170 * Called from the tnl module to error check the function parameters and
171 * verify that we really can draw something.
174 _mesa_validate_DrawArrays(GLcontext
*ctx
,
175 GLenum mode
, GLint start
, GLsizei count
)
177 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
180 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDrawArrays(count)" );
184 if (mode
> GL_POLYGON
) {
185 _mesa_error(ctx
, GL_INVALID_ENUM
, "glDrawArrays(mode)" );
190 _mesa_update_state(ctx
);
192 /* Always need vertex positions */
193 if (!ctx
->Array
.Vertex
.Enabled
194 && !(ctx
->VertexProgram
.Enabled
&& ctx
->Array
.VertexAttrib
[0].Enabled
))
197 if (ctx
->Const
.CheckArrayBounds
) {
198 if (start
+ count
> (GLint
) ctx
->Array
._MaxElement
)