GLboolean
_mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
GLenum mode, GLsizei count, GLenum type,
const GLvoid *indices, GLsizei numInstances,
GLint basevertex)
{
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (count <= 0) {
if (count < 0)
_mesa_error(ctx, GL_INVALID_VALUE,
"glDrawElementsInstanced(count=%d)", count);
return GL_FALSE;
}
if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glDrawElementsInstanced(mode = 0x%x)", mode);
return GL_FALSE;
}
if (type != GL_UNSIGNED_INT &&
type != GL_UNSIGNED_BYTE &&
type != GL_UNSIGNED_SHORT) {
_mesa_error(ctx, GL_INVALID_ENUM,
"glDrawElementsInstanced(type=0x%x)", type);
return GL_FALSE;
}
if (numInstances <= 0) {
if (numInstances < 0)
_mesa_error(ctx, GL_INVALID_VALUE,
"glDrawElementsInstanced(numInstances=%d)", numInstances);
return GL_FALSE;
}
if (!check_valid_to_render(ctx, "glDrawElementsInstanced"))
return GL_FALSE;
/* Vertex buffer object tests */
if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
/* use indices in the buffer object */
/* make sure count doesn't go outside buffer bounds */
if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) {
_mesa_warning(ctx,
"glDrawElementsInstanced index out of buffer bounds");
return GL_FALSE;
}
}
else {
/* not using a VBO */
if (!indices)
return GL_FALSE;
}
if (!check_index_bounds(ctx, count, type, indices, basevertex))
return GL_FALSE;
return GL_TRUE;
}
/**
* Error checking for glMultiDrawElements(). Includes parameter checking
* and VBO bounds checking.
* \return GL_TRUE if OK to render, GL_FALSE if error found
*/
GLboolean
_mesa_validate_MultiDrawElements(struct gl_context *ctx,
GLenum mode, const GLsizei *count,
GLenum type, const GLvoid * const *indices,
GLuint primcount, const GLint *basevertex)
{
unsigned i;
FLUSH_CURRENT(ctx, 0);
for (i = 0; i < primcount; i++) {
if (count[i] <= 0) {
if (count[i] < 0)
_mesa_error(ctx, GL_INVALID_VALUE,
"glMultiDrawElements(count)" );
return GL_FALSE;
}
}
if (!_mesa_valid_prim_mode(ctx, mode, "glMultiDrawElements")) {
return GL_FALSE;
}
if (!valid_elements_type(ctx, type, "glMultiDrawElements"))
return GL_FALSE;
if (!check_valid_to_render(ctx, "glMultiDrawElements"))
return GL_FALSE;
/* Vertex buffer object tests */
if (_mesa_is_bufferobj(ctx->Array.ArrayObj->ElementArrayBufferObj)) {
/* use indices in the buffer object */
/* make sure count doesn't go outside buffer bounds */
for (i = 0; i < primcount; i++) {
if (index_bytes(type, count[i]) >
ctx->Array.ArrayObj->ElementArrayBufferObj->Size) {
_mesa_warning(ctx,
"glMultiDrawElements index out of buffer bounds");
return GL_FALSE;
}
}
}
else {
/* not using a VBO */
for (i = 0; i < primcount; i++) {
if (!indices[i])
return GL_FALSE;
}
}
for (i = 0; i < primcount; i++) {
if (!check_index_bounds(ctx, count[i], type, indices[i],
basevertex ? basevertex[i] : 0))
return GL_FALSE;
}
return GL_TRUE;
}
/**
* Error checking for glDrawElements(). Includes parameter checking
* and VBO bounds checking.
* \return GL_TRUE if OK to render, GL_FALSE if error found
*/
GLboolean
_mesa_validate_DrawElements(struct gl_context *ctx,
GLenum mode, GLsizei count, GLenum type,
const GLvoid *indices, GLint basevertex)
{
FLUSH_CURRENT(ctx, 0);
/* From the GLES3 specification, section 2.14.2 (Transform Feedback
* Primitive Capture):
*
* The error INVALID_OPERATION is also generated by DrawElements,
* DrawElementsInstanced, and DrawRangeElements while transform feedback
* is active and not paused, regardless of mode.
*/
if (_mesa_is_gles3(ctx) && _mesa_is_xfb_active_and_unpaused(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawElements(transform feedback active)");
return GL_FALSE;
}
if (count <= 0) {
if (count < 0)
_mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" );
return GL_FALSE;
}
if (!_mesa_valid_prim_mode(ctx, mode, "glDrawElements")) {
return GL_FALSE;
}
if (!valid_elements_type(ctx, type, "glDrawElements"))
return GL_FALSE;
if (!check_valid_to_render(ctx, "glDrawElements"))
return GL_FALSE;
/* Vertex buffer object tests */
if (_mesa_is_bufferobj(ctx->Array.ArrayObj->ElementArrayBufferObj)) {
/* use indices in the buffer object */
/* make sure count doesn't go outside buffer bounds */
if (index_bytes(type, count) > ctx->Array.ArrayObj->ElementArrayBufferObj->Size) {
_mesa_warning(ctx, "glDrawElements index out of buffer bounds");
return GL_FALSE;
}
}
else {
/* not using a VBO */
if (!indices)
return GL_FALSE;
}
if (!check_index_bounds(ctx, count, type, indices, basevertex))
return GL_FALSE;
return GL_TRUE;
}
size_t r_index(SEXP x, size_t len) {
int tmp;
if (TYPEOF(x) == INTSXP) {
tmp = (int)INTEGER(x)[0];
} else if (TYPEOF(x) == REALSXP) {
tmp = (int)REAL(x)[0];
} else {
Rf_error("Invalid type for index");
}
return check_index_bounds(tmp, len);
}
/**
* Error checking for glDrawRangeElements(). Includes parameter checking
* and VBO bounds checking.
* \return GL_TRUE if OK to render, GL_FALSE if error found
*/
GLboolean
_mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
GLuint start, GLuint end,
GLsizei count, GLenum type,
const GLvoid *indices, GLint basevertex)
{
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (count <= 0) {
if (count < 0)
_mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(count)" );
return GL_FALSE;
}
if (mode > GL_POLYGON) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)" );
return GL_FALSE;
}
if (end < start) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(end<start)");
return GL_FALSE;
}
if (type != GL_UNSIGNED_INT &&
type != GL_UNSIGNED_BYTE &&
type != GL_UNSIGNED_SHORT) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)" );
return GL_FALSE;
}
if (!check_valid_to_render(ctx, "glDrawRangeElements"))
return GL_FALSE;
/* Vertex buffer object tests */
if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
/* use indices in the buffer object */
/* make sure count doesn't go outside buffer bounds */
if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) {
_mesa_warning(ctx, "glDrawRangeElements index out of buffer bounds");
return GL_FALSE;
}
}
else {
/* not using a VBO */
if (!indices)
return GL_FALSE;
}
if (!check_index_bounds(ctx, count, type, indices, basevertex))
return GL_FALSE;
return GL_TRUE;
}
size_t * r_indices(SEXP x, size_t len) {
const size_t ni = length(x);
size_t *idx = (size_t*) R_alloc(ni, sizeof(size_t));
for (size_t i = 0; i < ni; ++i) {
int tmp;
if (TYPEOF(x) == INTSXP) {
tmp = (int)INTEGER(x)[i];
} else if (TYPEOF(x) == REALSXP) {
tmp = (int)(REAL(x)[i]);
} else {
Rf_error("Invalid type for index");
}
idx[i] = check_index_bounds(tmp, len);
}
return idx;
}
