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#include "xorg_composite.h"
#include <cso_cache/cso_context.h>
#include <pipe/p_inlines.h>
struct xorg_composite_blend {
int op:8;
unsigned rgb_src_factor:5; /**< PIPE_BLENDFACTOR_x */
unsigned rgb_dst_factor:5; /**< PIPE_BLENDFACTOR_x */
unsigned alpha_src_factor:5; /**< PIPE_BLENDFACTOR_x */
unsigned alpha_dst_factor:5; /**< PIPE_BLENDFACTOR_x */
};
static const struct xorg_composite_blend xorg_blends[] = {
{ PictOpClear,
PIPE_BLENDFACTOR_CONST_COLOR, PIPE_BLENDFACTOR_CONST_ALPHA,
PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
{ PictOpSrc,
PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE,
PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO },
{ PictOpDst,
PIPE_BLENDFACTOR_ZERO, PIPE_BLENDFACTOR_ZERO,
PIPE_BLENDFACTOR_ONE, PIPE_BLENDFACTOR_ONE },
{ PictOpOver,
PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
{ PictOpOverReverse,
PIPE_BLENDFACTOR_SRC_ALPHA, PIPE_BLENDFACTOR_ONE,
PIPE_BLENDFACTOR_INV_SRC_ALPHA, PIPE_BLENDFACTOR_INV_SRC_ALPHA },
};
struct acceleration_info {
int op : 16;
int with_mask : 1;
int component_alpha : 1;
};
static const struct acceleration_info accelerated_ops[] = {
{PictOpClear, 1, 0},
{PictOpSrc, 1, 0},
{PictOpDst, 1, 0},
{PictOpOver, 1, 0},
{PictOpOverReverse, 1, 0},
{PictOpIn, 1, 0},
{PictOpInReverse, 1, 0},
{PictOpOut, 1, 0},
{PictOpOutReverse, 1, 0},
{PictOpAtop, 1, 0},
{PictOpAtopReverse, 1, 0},
{PictOpXor, 1, 0},
{PictOpAdd, 1, 0},
{PictOpSaturate, 1, 0},
};
static void
draw_texture(struct exa_context *exa)
{
#if 0
if (buf) {
util_draw_vertex_buffer(pipe, buf, 0,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
pipe_buffer_reference(&buf, NULL);
}
#endif
}
boolean xorg_composite_accelerated(int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture)
{
unsigned i;
unsigned accel_ops_count =
sizeof(accelerated_ops)/sizeof(struct acceleration_info);
if (pSrcPicture) {
/* component alpha not supported */
if (pSrcPicture->componentAlpha)
return FALSE;
/* fills not supported */
if (pSrcPicture->pSourcePict)
return FALSE;
}
for (i = 0; i < accel_ops_count; ++i) {
if (op == accelerated_ops[i].op) {
if (pMaskPicture && !accelerated_ops[i].with_mask)
return FALSE;
return TRUE;
}
}
return FALSE;
}
static void
bind_framebuffer_state(struct exa_context *exa, PicturePtr pDstPicture,
struct exa_pixmap_priv *pDst)
{
unsigned i;
struct pipe_framebuffer_state state;
struct pipe_surface *surface = exa_gpu_surface(exa, pDst);
memset(&state, 0, sizeof(struct pipe_framebuffer_state));
state.width = pDstPicture->pDrawable->width;
state.height = pDstPicture->pDrawable->height;
state.nr_cbufs = 1;
state.cbufs[0] = surface;
for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
state.cbufs[i] = 0;
/* currently we don't use depth/stencil */
state.zsbuf = 0;
cso_set_framebuffer(exa->cso, &state);
}
enum AxisOrientation {
Y0_BOTTOM,
Y0_TOP
};
static void
set_viewport(struct exa_context *exa, int width, int height,
enum AxisOrientation orientation)
{
struct pipe_viewport_state viewport;
float y_scale = (orientation == Y0_BOTTOM) ? -2.f : 2.f;
viewport.scale[0] = width / 2.f;
viewport.scale[1] = height / y_scale;
viewport.scale[2] = 1.0;
viewport.scale[3] = 1.0;
viewport.translate[0] = width / 2.f;
viewport.translate[1] = height / 2.f;
viewport.translate[2] = 0.0;
viewport.translate[3] = 0.0;
cso_set_viewport(exa->cso, &viewport);
}
static void
bind_viewport_state(struct exa_context *exa, PicturePtr pDstPicture)
{
const int param_bytes = 8 * sizeof(float);
int width = pDstPicture->pDrawable->width;
int height = pDstPicture->pDrawable->height;
float vs_consts[8] = {
2.f/width, 2.f/height, 1, 1,
-1, -1, 0, 0
};
struct pipe_constant_buffer *cbuf = &exa->vs_const_buffer;
set_viewport(exa, width, height, Y0_BOTTOM);
pipe_buffer_reference(&cbuf->buffer, NULL);
cbuf->buffer = pipe_buffer_create(exa->ctx->screen, 16,
PIPE_BUFFER_USAGE_CONSTANT,
param_bytes);
if (cbuf->buffer) {
pipe_buffer_write(exa->ctx->screen, cbuf->buffer,
0, param_bytes, vs_consts);
}
exa->ctx->set_constant_buffer(exa->ctx, PIPE_SHADER_VERTEX, 0, cbuf);
}
static void
bind_blend_state()
{
}
static void
bind_rasterizer_state()
{
}
static void
bind_shaders()
{
}
boolean xorg_composite_bind_state(struct exa_context *exa,
int op,
PicturePtr pSrcPicture,
PicturePtr pMaskPicture,
PicturePtr pDstPicture,
struct exa_pixmap_priv *pSrc,
struct exa_pixmap_priv *pMask,
struct exa_pixmap_priv *pDst)
{
bind_framebuffer_state(exa, pDstPicture, pDst);
bind_viewport_state(exa, pDstPicture);
bind_blend_state();
bind_rasterizer_state();
bind_shaders();
return FALSE;
}
void xorg_composite(struct exa_context *exa,
struct exa_pixmap_priv *dst,
int srcX, int srcY, int maskX, int maskY,
int dstX, int dstY, int width, int height)
{
}
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