/**
* Called by glDepthRange
*
* \param nearval specifies the Z buffer value which should correspond to
* the near clip plane
* \param farval specifies the Z buffer value which should correspond to
* the far clip plane
*/
void GLAPIENTRY
_mesa_DepthRange(GLclampd nearval, GLclampd farval)
{
unsigned i;
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE&VERBOSE_API)
_mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
/* The GL_ARB_viewport_array spec says:
*
* "DepthRange sets the depth range for all viewports to the same
* values and is equivalent (assuming no errors are generated) to:
*
* for (uint i = 0; i < MAX_VIEWPORTS; i++)
* DepthRangeIndexed(i, n, f);"
*
* Set the depth range for all of the viewports supported by the
* implementation, but only signal the driver once at the end.
*/
for (i = 0; i < ctx->Const.MaxViewports; i++)
set_depth_range_no_notify(ctx, i, nearval, farval);
if (ctx->Driver.DepthRange) {
ctx->Driver.DepthRange(ctx);
}
}
void
_mesa_set_depth_range(struct gl_context *ctx, unsigned idx,
GLclampd nearval, GLclampd farval)
{
set_depth_range_no_notify(ctx, idx, nearval, farval);
if (ctx->Driver.DepthRange)
ctx->Driver.DepthRange(ctx);
}
/**
* Update a range DepthRange values
*
* \param first starting array index
* \param count count of DepthRange items to update
* \param v pointer to memory containing
* GLclampd near and far clip-plane values
*/
static ALWAYS_INLINE void
depth_range_arrayv(struct gl_context *ctx, GLuint first, GLsizei count,
const struct gl_depthrange_inputs *const inputs)
{
for (GLsizei i = 0; i < count; i++)
set_depth_range_no_notify(ctx, i + first, inputs[i].Near, inputs[i].Far);
if (ctx->Driver.DepthRange)
ctx->Driver.DepthRange(ctx);
}
void GLAPIENTRY
_mesa_DepthRangeArrayfvOES(GLuint first, GLsizei count, const GLfloat *v)
{
int i;
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glDepthRangeArrayfv %d %d\n", first, count);
if ((first + count) > ctx->Const.MaxViewports) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glDepthRangeArrayfv: first (%d) + count (%d) >= MaxViewports (%d)",
first, count, ctx->Const.MaxViewports);
return;
}
for (i = 0; i < count; i++)
set_depth_range_no_notify(ctx, i + first, v[i * 2], v[i * 2 + 1]);
if (ctx->Driver.DepthRange)
ctx->Driver.DepthRange(ctx);
}
/**
* Update a range DepthRange values
*
* \param first starting array index
* \param count count of DepthRange items to update
* \param v pointer to memory containing
* GLclampd near and far clip-plane values
*/
void GLAPIENTRY
_mesa_DepthRangeArrayv(GLuint first, GLsizei count, const GLclampd *v)
{
int i;
const struct gl_depthrange_inputs *const p =
(struct gl_depthrange_inputs *) v;
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glDepthRangeArrayv %d %d\n", first, count);
if ((first + count) > ctx->Const.MaxViewports) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glDepthRangev: first (%d) + count (%d) >= MaxViewports (%d)",
first, count, ctx->Const.MaxViewports);
return;
}
for (i = 0; i < count; i++)
set_depth_range_no_notify(ctx, i + first, p[i].Near, p[i].Far);
if (ctx->Driver.DepthRange)
ctx->Driver.DepthRange(ctx);
}
