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mesa: make max_buffer_index() a non-static function

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This commit is contained in:
Brian Paul 2009-09-21 14:07:35 -06:00
parent 4916a5a2e7
commit e5d29ebb5e
2 changed files with 51 additions and 0 deletions
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45
src/mesa/main/api_validate.c
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@ -51,6 +51,51 @@ index_bytes(GLenum type, GLsizei count)
}
/**
* Find the max index in the given element/index buffer
*/
GLuint
_mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
const void *indices,
struct gl_buffer_object *elementBuf)
{
const GLubyte *map = NULL;
GLuint max = 0;
GLuint i;
if (_mesa_is_bufferobj(elementBuf)) {
/* elements are in a user-defined buffer object. need to map it */
map = ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER,
GL_READ_ONLY, elementBuf);
/* Actual address is the sum of pointers */
indices = (const GLvoid *) ADD_POINTERS(map, (const GLubyte *) indices);
}
if (type == GL_UNSIGNED_INT) {
for (i = 0; i < count; i++)
if (((GLuint *) indices)[i] > max)
max = ((GLuint *) indices)[i];
}
else if (type == GL_UNSIGNED_SHORT) {
for (i = 0; i < count; i++)
if (((GLushort *) indices)[i] > max)
max = ((GLushort *) indices)[i];
}
else {
ASSERT(type == GL_UNSIGNED_BYTE);
for (i = 0; i < count; i++)
if (((GLubyte *) indices)[i] > max)
max = ((GLubyte *) indices)[i];
}
if (map) {
ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, elementBuf);
}
return max;
}
/**
* Check if OK to draw arrays/elements.
*/

6
src/mesa/main/api_validate.h
View file

@ -30,6 +30,12 @@
#include "mtypes.h"
extern GLuint
_mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
const void *indices,
struct gl_buffer_object *elementBuf);
extern GLboolean
_mesa_validate_DrawArrays(GLcontext *ctx,
GLenum mode, GLint start, GLsizei count);