/**
* Allocate space for and store data in a buffer object. Any data that was
* previously stored in the buffer object is lost. If data is NULL,
* memory will be allocated, but no copy will occur.
* Called via glBufferDataARB().
*/
static void
st_bufferobj_data(GLcontext *ctx,
GLenum target,
GLsizeiptrARB size,
const GLvoid * data,
GLenum usage,
struct gl_buffer_object *obj)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_buffer_object *st_obj = st_buffer_object(obj);
unsigned buffer_usage;
st_obj->Base.Size = size;
st_obj->Base.Usage = usage;
switch(target) {
case GL_PIXEL_PACK_BUFFER_ARB:
case GL_PIXEL_UNPACK_BUFFER_ARB:
buffer_usage = PIPE_BUFFER_USAGE_PIXEL;
break;
case GL_ARRAY_BUFFER_ARB:
buffer_usage = PIPE_BUFFER_USAGE_VERTEX;
break;
case GL_ELEMENT_ARRAY_BUFFER_ARB:
buffer_usage = PIPE_BUFFER_USAGE_INDEX;
break;
default:
buffer_usage = 0;
}
pipe_buffer_reference( &st_obj->buffer, NULL );
st_obj->buffer = pipe_buffer_create( pipe->screen, 32, buffer_usage, size );
if (!st_obj->buffer) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB");
return;
}
st_obj->size = size;
if (data)
st_no_flush_pipe_buffer_write(st_context(ctx), st_obj->buffer, 0,
size, data);
}
/**
* Pass the given program parameters to the graphics pipe as a
* constant buffer.
* \param id either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
*/
void st_upload_constants( struct st_context *st,
struct gl_program_parameter_list *params,
unsigned id)
{
struct pipe_context *pipe = st->pipe;
struct pipe_constant_buffer *cbuf = &st->state.constants[id];
assert(id == PIPE_SHADER_VERTEX || id == PIPE_SHADER_FRAGMENT);
/* update constants */
if (params && params->NumParameters) {
const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
_mesa_load_state_parameters(st->ctx, params);
/* We always need to get a new buffer, to keep the drivers simple and
* avoid gratuitous rendering synchronization.
*/
pipe_buffer_reference(&cbuf->buffer, NULL );
cbuf->buffer = pipe_buffer_create(pipe->screen, 16, PIPE_BUFFER_USAGE_CONSTANT,
paramBytes );
if (0)
{
printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
__FUNCTION__, id, params->NumParameters, params->StateFlags);
_mesa_print_parameter_list(params);
}
/* load Mesa constants into the constant buffer */
if (cbuf->buffer)
st_no_flush_pipe_buffer_write(st, cbuf->buffer,
0, paramBytes,
params->ParameterValues);
st->pipe->set_constant_buffer(st->pipe, id, 0, cbuf);
}
else {
st->constants.tracked_state[id].dirty.mesa = 0;
// st->pipe->set_constant_buffer(st->pipe, id, 0, NULL);
}
}
void vg_validate_state(struct vg_context *ctx)
{
vg_manager_validate_framebuffer(ctx);
if ((ctx->state.dirty & BLEND_DIRTY)) {
struct pipe_blend_state *blend = &ctx->state.g3d.blend;
memset(blend, 0, sizeof(struct pipe_blend_state));
blend->rt[0].blend_enable = 1;
blend->rt[0].colormask = PIPE_MASK_RGBA;
switch (ctx->state.vg.blend_mode) {
case VG_BLEND_SRC:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].blend_enable = 0;
break;
case VG_BLEND_SRC_OVER:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_INV_SRC_ALPHA;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_INV_SRC_ALPHA;
break;
case VG_BLEND_DST_OVER:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_INV_DST_ALPHA;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_INV_DST_ALPHA;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_DST_ALPHA;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_DST_ALPHA;
break;
case VG_BLEND_SRC_IN:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_DST_ALPHA;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_DST_ALPHA;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
break;
case VG_BLEND_DST_IN:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_SRC_ALPHA;
break;
case VG_BLEND_MULTIPLY:
case VG_BLEND_SCREEN:
case VG_BLEND_DARKEN:
case VG_BLEND_LIGHTEN:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
blend->rt[0].blend_enable = 0;
break;
case VG_BLEND_ADDITIVE:
blend->rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
blend->rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
break;
default:
assert(!"not implemented blend mode");
}
cso_set_blend(ctx->cso_context, &ctx->state.g3d.blend);
}
if ((ctx->state.dirty & RASTERIZER_DIRTY)) {
struct pipe_rasterizer_state *raster = &ctx->state.g3d.rasterizer;
memset(raster, 0, sizeof(struct pipe_rasterizer_state));
raster->gl_rasterization_rules = 1;
cso_set_rasterizer(ctx->cso_context, &ctx->state.g3d.rasterizer);
}
if ((ctx->state.dirty & VIEWPORT_DIRTY)) {
struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
const VGint param_bytes = 8 * sizeof(VGfloat);
VGfloat vs_consts[8] = {
2.f/fb->width, 2.f/fb->height, 1, 1,
-1, -1, 0, 0
};
struct pipe_resource **cbuf = &ctx->vs_const_buffer;
vg_set_viewport(ctx, VEGA_Y0_BOTTOM);
pipe_resource_reference(cbuf, NULL);
*cbuf = pipe_buffer_create(ctx->pipe->screen,
PIPE_BIND_CONSTANT_BUFFER,
param_bytes);
if (*cbuf) {
st_no_flush_pipe_buffer_write(ctx, *cbuf,
0, param_bytes, vs_consts);
}
ctx->pipe->set_constant_buffer(ctx->pipe, PIPE_SHADER_VERTEX, 0, *cbuf);
}
if ((ctx->state.dirty & VS_DIRTY)) {
cso_set_vertex_shader_handle(ctx->cso_context,
vg_plain_vs(ctx));
}
/* must be last because it renders to the depth buffer*/
if ((ctx->state.dirty & DEPTH_STENCIL_DIRTY)) {
update_clip_state(ctx);
cso_set_depth_stencil_alpha(ctx->cso_context, &ctx->state.g3d.dsa);
}
shader_set_masking(ctx->shader, ctx->state.vg.masking);
shader_set_image_mode(ctx->shader, ctx->state.vg.image_mode);
ctx->state.dirty = NONE_DIRTY;
}
/**
* Draw quad with texcoords and optional color.
* Coords are window coords with y=0=bottom.
* \param color may be null
* \param invertTex if true, flip texcoords vertically
*/
static void
draw_quad(GLcontext *ctx, GLfloat x0, GLfloat y0, GLfloat z,
GLfloat x1, GLfloat y1, const GLfloat *color,
GLboolean invertTex)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = ctx->st->pipe;
GLfloat verts[4][3][4]; /* four verts, three attribs, XYZW */
/* setup vertex data */
{
const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
const GLfloat fb_width = (GLfloat) fb->Width;
const GLfloat fb_height = (GLfloat) fb->Height;
const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f;
const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f;
const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f;
const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f;
const GLfloat sLeft = 0.0f, sRight = 1.0f;
const GLfloat tTop = invertTex, tBot = 1.0f - tTop;
GLuint tex, i;
/* upper-left */
verts[0][0][0] = clip_x0; /* v[0].attr[0].x */
verts[0][0][1] = clip_y0; /* v[0].attr[0].y */
/* upper-right */
verts[1][0][0] = clip_x1;
verts[1][0][1] = clip_y0;
/* lower-right */
verts[2][0][0] = clip_x1;
verts[2][0][1] = clip_y1;
/* lower-left */
verts[3][0][0] = clip_x0;
verts[3][0][1] = clip_y1;
tex = color ? 2 : 1;
verts[0][tex][0] = sLeft; /* v[0].attr[tex].s */
verts[0][tex][1] = tTop; /* v[0].attr[tex].t */
verts[1][tex][0] = sRight;
verts[1][tex][1] = tTop;
verts[2][tex][0] = sRight;
verts[2][tex][1] = tBot;
verts[3][tex][0] = sLeft;
verts[3][tex][1] = tBot;
/* same for all verts: */
if (color) {
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0f; /*W*/
verts[i][1][0] = color[0];
verts[i][1][1] = color[1];
verts[i][1][2] = color[2];
verts[i][1][3] = color[3];
verts[i][2][2] = 0.0f; /*R*/
verts[i][2][3] = 1.0f; /*Q*/
}
}
else {
for (i = 0; i < 4; i++) {
verts[i][0][2] = z; /*Z*/
verts[i][0][3] = 1.0f; /*W*/
verts[i][1][2] = 0.0f; /*R*/
verts[i][1][3] = 1.0f; /*Q*/
}
}
}
{
struct pipe_buffer *buf;
/* allocate/load buffer object with vertex data */
buf = pipe_buffer_create(pipe->screen, 32, PIPE_BUFFER_USAGE_VERTEX,
sizeof(verts));
st_no_flush_pipe_buffer_write(st, buf, 0, sizeof(verts), verts);
util_draw_vertex_buffer(pipe, buf, 0,
PIPE_PRIM_QUADS,
4, /* verts */
3); /* attribs/vert */
pipe_buffer_reference(&buf, NULL);
}
}
