/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2009 Marek Olšák <maraeo@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "draw/draw_context.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_pack_color.h"
#include "tgsi/tgsi_parse.h"
#include "pipe/p_config.h"
#include "r300_context.h"
#include "r300_reg.h"
#include "r300_screen.h"
#include "r300_state_inlines.h"
#include "r300_fs.h"
#include "r300_vs.h"
#include "radeon_winsys.h"
/* r300_state: Functions used to intialize state context by translating
* Gallium state objects into semi-native r300 state objects. */
static boolean blend_discard_if_src_alpha_0(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_ALPHA == 0, and the following state is set, the colorbuffer
* will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ONE);
}
static boolean blend_discard_if_src_alpha_1(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_ALPHA == 1, and the following state is set, the colorbuffer
* will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ONE);
}
static boolean blend_discard_if_src_color_0(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_COLOR == (0,0,0), and the following state is set, the colorbuffer
* will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_ONE);
}
static boolean blend_discard_if_src_color_1(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_COLOR == (1,1,1), and the following state is set, the colorbuffer
* will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_ONE);
}
static boolean blend_discard_if_src_alpha_color_0(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_ALPHA_COLOR == (0,0,0,0), and the following state is set,
* the colorbuffer will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ONE);
}
static boolean blend_discard_if_src_alpha_color_1(unsigned srcRGB, unsigned srcA,
unsigned dstRGB, unsigned dstA)
{
/* If the blend equation is ADD or REVERSE_SUBTRACT,
* SRC_ALPHA_COLOR == (1,1,1,1), and the following state is set,
* the colorbuffer will not be changed.
* Notice that the dst factors are the src factors inverted. */
return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_ZERO) &&
(srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
srcA == PIPE_BLENDFACTOR_ZERO) &&
(dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ONE) &&
(dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ONE);
}
static unsigned bgra_cmask(unsigned mask)
{
/* Gallium uses RGBA color ordering while R300 expects BGRA. */
return ((mask & PIPE_MASK_R) << 2) |
((mask & PIPE_MASK_B) >> 2) |
(mask & (PIPE_MASK_G | PIPE_MASK_A));
}
/* Create a new blend state based on the CSO blend state.
*
* This encompasses alpha blending, logic/raster ops, and blend dithering. */
static void* r300_create_blend_state(struct pipe_context* pipe,
const struct pipe_blend_state* state)
{
struct r300_screen* r300screen = r300_screen(pipe->screen);
struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
if (state->rt[0].blend_enable)
{
unsigned eqRGB = state->rt[0].rgb_func;
unsigned srcRGB = state->rt[0].rgb_src_factor;
unsigned dstRGB = state->rt[0].rgb_dst_factor;
unsigned eqA = state->rt[0].alpha_func;
unsigned srcA = state->rt[0].alpha_src_factor;
unsigned dstA = state->rt[0].alpha_dst_factor;
/* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
* this is just the crappy D3D naming */
blend->blend_control = R300_ALPHA_BLEND_ENABLE |
r300_translate_blend_function(eqRGB) |
( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
/* Optimization: some operations do not require the destination color.
*
* When SRC_ALPHA_SATURATE is used, colorbuffer reads must be enabled,
* otherwise blending gives incorrect results. It seems to be
* a hardware bug. */
if (eqRGB == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MIN ||
eqRGB == PIPE_BLEND_MAX || eqA == PIPE_BLEND_MAX ||
dstRGB != PIPE_BLENDFACTOR_ZERO ||
dstA != PIPE_BLENDFACTOR_ZERO ||
srcRGB == PIPE_BLENDFACTOR_DST_COLOR ||
srcRGB == PIPE_BLENDFACTOR_DST_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_INV_DST_COLOR ||
srcRGB == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
srcA == PIPE_BLENDFACTOR_DST_COLOR ||
srcA == PIPE_BLENDFACTOR_DST_ALPHA ||
srcA == PIPE_BLENDFACTOR_INV_DST_COLOR ||
srcA == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE) {
/* Enable reading from the colorbuffer. */
blend->blend_control |= R300_READ_ENABLE;
if (r300_screen(r300_context(pipe)->context.screen)->caps->is_r500) {
/* Optimization: Depending on incoming pixels, we can
* conditionally disable the reading in hardware... */
if (eqRGB != PIPE_BLEND_MIN && eqA != PIPE_BLEND_MIN &&
eqRGB != PIPE_BLEND_MAX && eqA != PIPE_BLEND_MAX) {
/* Disable reading if SRC_ALPHA == 0. */
if ((dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ZERO) &&
(dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ZERO)) {
blend->blend_control |= R500_SRC_ALPHA_0_NO_READ;
}
/* Disable reading if SRC_ALPHA == 1. */
if ((dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstRGB == PIPE_BLENDFACTOR_ZERO) &&
(dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
dstA == PIPE_BLENDFACTOR_ZERO)) {
blend->blend_control |= R500_SRC_ALPHA_1_NO_READ;
}
}
}
}
/* Optimization: discard pixels which don't change the colorbuffer.
*
* The code below is non-trivial and some math is involved.
*
* Discarding pixels must be disabled when FP16 AA is enabled.
* This is a hardware bug. Also, this implementation wouldn't work
* with FP blending enabled and equation clamping disabled.
*
* Equations other than ADD are rarely used and therefore won't be
* optimized. */
if ((eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
(eqA == PIPE_BLEND_ADD || eqA == PIPE_BLEND_REVERSE_SUBTRACT)) {
/* ADD: X+Y
* REVERSE_SUBTRACT: Y-X
*
* The idea is:
* If X = src*srcFactor = 0 and Y = dst*dstFactor = 1,
* then CB will not be changed.
*
* Given the srcFactor and dstFactor variables, we can derive
* what src and dst should be equal to and discard appropriate
* pixels.
*/
if (blend_discard_if_src_alpha_0(srcRGB, srcA, dstRGB, dstA)) {
blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_0;
} else if (blend_discard_if_src_alpha_1(srcRGB, srcA,
dstRGB, dstA)) {
blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_1;
} else if (blend_discard_if_src_color_0(srcRGB, srcA,
dstRGB, dstA)) {
blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_0;
} else if (blend_discard_if_src_color_1(srcRGB, srcA,
dstRGB, dstA)) {
blend->blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_1;
} else if (blend_discard_if_src_alpha_color_0(srcRGB, srcA,
dstRGB, dstA)) {
blend->blend_control |=
R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_0;
} else if (blend_discard_if_src_alpha_color_1(srcRGB, srcA,
dstRGB, dstA)) {
blend->blend_control |=
R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_1;
}
}
/* separate alpha */
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
blend->blend_control |= R300_SEPARATE_ALPHA_ENABLE;
blend->alpha_blend_control =
r300_translate_blend_function(eqA) |
(r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
(r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
}
}
/* PIPE_LOGICOP_* don't need to be translated, fortunately. */
if (state->logicop_enable) {
blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
(state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
}
/* Color channel masks for all MRTs. */
blend->color_channel_mask = bgra_cmask(state->rt[0].colormask);
if (r300screen->caps->is_r500 && state->independent_blend_enable) {
if (state->rt[1].blend_enable) {
blend->color_channel_mask |= bgra_cmask(state->rt[1].colormask) << 4;
}
if (state->rt[2].blend_enable) {
blend->color_channel_mask |= bgra_cmask(state->rt[2].colormask) << 8;
}
if (state->rt[3].blend_enable) {
blend->color_channel_mask |= bgra_cmask(state->rt[3].colormask) << 12;
}
}
if (state->dither) {
blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
}
return (void*)blend;
}
/* Bind blend state. */
static void r300_bind_blend_state(struct pipe_context* pipe,
void* state)
{
struct r300_context* r300 = r300_context(pipe);
r300->blend_state.state = state;
r300->blend_state.dirty = TRUE;
}
/* Free blend state. */
static void r300_delete_blend_state(struct pipe_context* pipe,
void* state)
{
FREE(state);
}
/* Convert float to 10bit integer */
static unsigned float_to_fixed10(float f)
{
return CLAMP((unsigned)(f * 1023.9f), 0, 1023);
}
/* Set blend color.
* Setup both R300 and R500 registers, figure out later which one to write. */
static void r300_set_blend_color(struct pipe_context* pipe,
const struct pipe_blend_color* color)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_screen* r300screen = r300_screen(pipe->screen);
struct r300_blend_color_state* state =
(struct r300_blend_color_state*)r300->blend_color_state.state;
union util_color uc;
util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
state->blend_color = uc.ui;
/* XXX if FP16 blending is enabled, we should use the FP16 format */
state->blend_color_red_alpha =
float_to_fixed10(color->color[0]) |
(float_to_fixed10(color->color[3]) << 16);
state->blend_color_green_blue =
float_to_fixed10(color->color[2]) |
(float_to_fixed10(color->color[1]) << 16);
r300->blend_color_state.size = r300screen->caps->is_r500 ? 3 : 2;
r300->blend_color_state.dirty = TRUE;
}
static void r300_set_clip_state(struct pipe_context* pipe,
const struct pipe_clip_state* state)
{
struct r300_context* r300 = r300_context(pipe);
if (r300_screen(pipe->screen)->caps->has_tcl) {
memcpy(r300->clip_state.state, state, sizeof(struct pipe_clip_state));
r300->clip_state.size = 29;
} else {
draw_flush(r300->draw);
draw_set_clip_state(r300->draw, state);
r300->clip_state.size = 2;
}
r300->clip_state.dirty = TRUE;
}
/* Create a new depth, stencil, and alpha state based on the CSO dsa state.
*
* This contains the depth buffer, stencil buffer, alpha test, and such.
* On the Radeon, depth and stencil buffer setup are intertwined, which is
* the reason for some of the strange-looking assignments across registers. */
static void*
r300_create_dsa_state(struct pipe_context* pipe,
const struct pipe_depth_stencil_alpha_state* state)
{
struct r300_capabilities *caps =
r300_screen(r300_context(pipe)->context.screen)->caps;
struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
/* Depth test setup. */
if (state->depth.enabled) {
dsa->z_buffer_control |= R300_Z_ENABLE;
if (state->depth.writemask) {
dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
}
dsa->z_stencil_control |=
(r300_translate_depth_stencil_function(state->depth.func) <<
R300_Z_FUNC_SHIFT);
}
/* Stencil buffer setup. */
if (state->stencil[0].enabled) {
dsa->z_buffer_control |= R300_STENCIL_ENABLE;
dsa->z_stencil_control |=
(r300_translate_depth_stencil_function(state->stencil[0].func) <<
R300_S_FRONT_FUNC_SHIFT) |
(r300_translate_stencil_op(state->stencil[0].fail_op) <<
R300_S_FRONT_SFAIL_OP_SHIFT) |
(r300_translate_stencil_op(state->stencil[0].zpass_op) <<
R300_S_FRONT_ZPASS_OP_SHIFT) |
(r300_translate_stencil_op(state->stencil[0].zfail_op) <<
R300_S_FRONT_ZFAIL_OP_SHIFT);
dsa->stencil_ref_mask =
(state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
(state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
if (state->stencil[1].enabled) {
dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
dsa->z_stencil_control |=
(r300_translate_depth_stencil_function(state->stencil[1].func) <<
R300_S_BACK_FUNC_SHIFT) |
(r300_translate_stencil_op(state->stencil[1].fail_op) <<
R300_S_BACK_SFAIL_OP_SHIFT) |
(r300_translate_stencil_op(state->stencil[1].zpass_op) <<
R300_S_BACK_ZPASS_OP_SHIFT) |
(r300_translate_stencil_op(state->stencil[1].zfail_op) <<
R300_S_BACK_ZFAIL_OP_SHIFT);
if (caps->is_r500)
{
dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
dsa->stencil_ref_bf =
(state->stencil[1].valuemask <<
R300_STENCILMASK_SHIFT) |
(state->stencil[1].writemask <<
R300_STENCILWRITEMASK_SHIFT);
}
}
}
/* Alpha test setup. */
if (state->alpha.enabled) {
dsa->alpha_function =
r300_translate_alpha_function(state->alpha.func) |
R300_FG_ALPHA_FUNC_ENABLE;
/* We could use 10bit alpha ref but who needs that? */
dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
if (caps->is_r500)
dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
}
return (void*)dsa;
}
/* Bind DSA state. */
static void r300_bind_dsa_state(struct pipe_context* pipe,
void* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_screen* r300screen = r300_screen(pipe->screen);
r300->dsa_state.state = state;
r300->dsa_state.size = r300screen->caps->is_r500 ? 8 : 6;
r300->dsa_state.dirty = TRUE;
}
/* Free DSA state. */
static void r300_delete_dsa_state(struct pipe_context* pipe,
void* state)
{
FREE(state);
}
static void r300_set_stencil_ref(struct pipe_context* pipe,
const struct pipe_stencil_ref* sr)
{
struct r300_context* r300 = r300_context(pipe);
r300->stencil_ref = *sr;
r300->dsa_state.dirty = TRUE;
}
/* This switcheroo is needed just because of goddamned MACRO_SWITCH. */
static void r300_fb_update_tiling_flags(struct r300_context *r300,
const struct pipe_framebuffer_state *old_state,
const struct pipe_framebuffer_state *new_state)
{
struct r300_texture *tex;
unsigned i, j, level;
/* Reset tiling flags for old surfaces to default values. */
for (i = 0; i < old_state->nr_cbufs; i++) {
for (j = 0; j < new_state->nr_cbufs; j++) {
if (old_state->cbufs[i]->texture == new_state->cbufs[j]->texture) {
break;
}
}
/* If not binding the surface again... */
if (j != new_state->nr_cbufs) {
continue;
}
tex = (struct r300_texture*)old_state->cbufs[i]->texture;
if (tex) {
r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
tex->pitch[0],
tex->microtile != 0,
tex->macrotile != 0);
}
}
if (old_state->zsbuf &&
(!new_state->zsbuf ||
old_state->zsbuf->texture != new_state->zsbuf->texture)) {
tex = (struct r300_texture*)old_state->zsbuf->texture;
if (tex) {
r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
tex->pitch[0],
tex->microtile != 0,
tex->macrotile != 0);
}
}
/* Set tiling flags for new surfaces. */
for (i = 0; i < new_state->nr_cbufs; i++) {
tex = (struct r300_texture*)new_state->cbufs[i]->texture;
level = new_state->cbufs[i]->level;
r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
tex->pitch[level],
tex->microtile != 0,
tex->mip_macrotile[level] != 0);
}
if (new_state->zsbuf) {
tex = (struct r300_texture*)new_state->zsbuf->texture;
level = new_state->zsbuf->level;
r300->winsys->buffer_set_tiling(r300->winsys, tex->buffer,
tex->pitch[level],
tex->microtile != 0,
tex->mip_macrotile[level] != 0);
}
}
static void
r300_set_framebuffer_state(struct pipe_context* pipe,
const struct pipe_framebuffer_state* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_screen* r300screen = r300_screen(pipe->screen);
unsigned max_width, max_height;
uint32_t zbuffer_bpp = 0;
if (state->nr_cbufs > 4) {
debug_printf("r300: Implementation error: Too many MRTs in %s, "
"refusing to bind framebuffer state!\n", __FUNCTION__);
return;
}
if (r300screen->caps->is_r500) {
max_width = max_height = 4096;
} else if (r300screen->caps->is_r400) {
max_width = max_height = 4021;
} else {
max_width = max_height = 2560;
}
if (state->width > max_width || state->height > max_height) {
debug_printf("r300: Implementation error: Render targets are too "
"big in %s, refusing to bind framebuffer state!\n", __FUNCTION__);
return;
}
if (r300->draw) {
draw_flush(r300->draw);
}
memcpy(r300->fb_state.state, state, sizeof(struct pipe_framebuffer_state));
r300->fb_state.size = (10 * state->nr_cbufs) + (state->zsbuf ? 10 : 0) + 6;
r300_fb_update_tiling_flags(r300, r300->fb_state.state, state);
/* XXX wait what */
r300->blend_state.dirty = TRUE;
r300->dsa_state.dirty = TRUE;
r300->fb_state.dirty = TRUE;
r300->scissor_state.dirty = TRUE;
/* Polygon offset depends on the zbuffer bit depth. */
if (state->zsbuf && r300->polygon_offset_enabled) {
switch (util_format_get_blocksize(state->zsbuf->texture->format)) {
case 2:
zbuffer_bpp = 16;
break;
case 4:
zbuffer_bpp = 24;
break;
}
if (r300->zbuffer_bpp != zbuffer_bpp) {
r300->zbuffer_bpp = zbuffer_bpp;
r300->rs_state.dirty = TRUE;
}
}
}
/* Create fragment shader state. */
static void* r300_create_fs_state(struct pipe_context* pipe,
const struct pipe_shader_state* shader)
{
struct r300_fragment_shader* fs = NULL;
fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
/* Copy state directly into shader. */
fs->state = *shader;
fs->state.tokens = tgsi_dup_tokens(shader->tokens);
tgsi_scan_shader(shader->tokens, &fs->info);
r300_shader_read_fs_inputs(&fs->info, &fs->inputs);
return (void*)fs;
}
/* Bind fragment shader state. */
static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
if (fs == NULL) {
r300->fs = NULL;
return;
}
r300->fs = fs;
r300_pick_fragment_shader(r300);
if (r300->vs && r300_vertex_shader_setup_wpos(r300)) {
r300->vertex_format_state.dirty = TRUE;
}
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER | R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
/* Delete fragment shader state. */
static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
{
struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
struct r300_fragment_shader_code *tmp, *ptr = fs->first;
while (ptr) {
tmp = ptr;
ptr = ptr->next;
rc_constants_destroy(&tmp->code.constants);
FREE(tmp);
}
FREE((void*)fs->state.tokens);
FREE(shader);
}
static void r300_set_polygon_stipple(struct pipe_context* pipe,
const struct pipe_poly_stipple* state)
{
/* XXX no idea how to set this up, but not terribly important */
}
/* Create a new rasterizer state based on the CSO rasterizer state.
*
* This is a very large chunk of state, and covers most of the graphics
* backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
*
* In a not entirely unironic sidenote, this state has nearly nothing to do
* with the actual block on the Radeon called the rasterizer (RS). */
static void* r300_create_rs_state(struct pipe_context* pipe,
const struct pipe_rasterizer_state* state)
{
struct r300_screen* r300screen = r300_screen(pipe->screen);
struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
/* Copy rasterizer state for Draw. */
rs->rs = *state;
#ifdef PIPE_ARCH_LITTLE_ENDIAN
rs->vap_control_status = R300_VC_NO_SWAP;
#else
rs->vap_control_status = R300_VC_32BIT_SWAP;
#endif
/* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL.
* Else, enable HW TCL and force Draw's TCL off. */
if (state->bypass_vs_clip_and_viewport ||
!r300screen->caps->has_tcl) {
rs->vap_control_status |= R300_VAP_TCL_BYPASS;
}
rs->point_size = pack_float_16_6x(state->point_size) |
(pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
/* Point minimum and maximum sizes. This register has to be emitted,
* and it'd be a step backwards to put it in invariant state. */
if (r300screen->caps->is_r500) {
rs->point_minmax =
((int)(0.0 * 6.0) << R300_GA_POINT_MINMAX_MIN_SHIFT) |
((int)(4096.0 * 6.0) << R300_GA_POINT_MINMAX_MAX_SHIFT);
} else if (r300screen->caps->is_r400) {
rs->point_minmax =
((int)(0.0 * 6.0) << R300_GA_POINT_MINMAX_MIN_SHIFT) |
((int)(4021.0 * 6.0) << R300_GA_POINT_MINMAX_MAX_SHIFT);
} else {
rs->point_minmax =
((int)(0.0 * 6.0) << R300_GA_POINT_MINMAX_MIN_SHIFT) |
((int)(2560.0 * 6.0) << R300_GA_POINT_MINMAX_MAX_SHIFT);
}
rs->line_control = pack_float_16_6x(state->line_width) |
R300_GA_LINE_CNTL_END_TYPE_COMP;
/* Enable polygon mode */
if (state->fill_cw != PIPE_POLYGON_MODE_FILL ||
state->fill_ccw != PIPE_POLYGON_MODE_FILL) {
rs->polygon_mode = R300_GA_POLY_MODE_DUAL;
}
/* Radeons don't think in "CW/CCW", they think in "front/back". */
if (state->front_winding == PIPE_WINDING_CW) {
rs->cull_mode = R300_FRONT_FACE_CW;
/* Polygon offset */
if (state->offset_cw) {
rs->polygon_offset_enable |= R300_FRONT_ENABLE;
}
if (state->offset_ccw) {
rs->polygon_offset_enable |= R300_BACK_ENABLE;
}
/* Polygon mode */
if (rs->polygon_mode) {
rs->polygon_mode |=
r300_translate_polygon_mode_front(state->fill_cw);
rs->polygon_mode |=
r300_translate_polygon_mode_back(state->fill_ccw);
}
} else {
rs->cull_mode = R300_FRONT_FACE_CCW;
/* Polygon offset */
if (state->offset_ccw) {
rs->polygon_offset_enable |= R300_FRONT_ENABLE;
}
if (state->offset_cw) {
rs->polygon_offset_enable |= R300_BACK_ENABLE;
}
/* Polygon mode */
if (rs->polygon_mode) {
rs->polygon_mode |=
r300_translate_polygon_mode_front(state->fill_ccw);
rs->polygon_mode |=
r300_translate_polygon_mode_back(state->fill_cw);
}
}
if (state->front_winding & state->cull_mode) {
rs->cull_mode |= R300_CULL_FRONT;
}
if (~(state->front_winding) & state->cull_mode) {
rs->cull_mode |= R300_CULL_BACK;
}
if (rs->polygon_offset_enable) {
rs->depth_offset = state->offset_units;
rs->depth_scale = state->offset_scale;
}
if (state->line_stipple_enable) {
rs->line_stipple_config =
R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
(fui((float)state->line_stipple_factor) &
R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
/* XXX this might need to be scaled up */
rs->line_stipple_value = state->line_stipple_pattern;
}
if (state->flatshade) {
rs->color_control = R300_SHADE_MODEL_FLAT;
} else {
rs->color_control = R300_SHADE_MODEL_SMOOTH;
}
return (void*)rs;
}
/* Bind rasterizer state. */
static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_rs_state* rs = (struct r300_rs_state*)state;
if (r300->draw) {
draw_flush(r300->draw);
draw_set_rasterizer_state(r300->draw, &rs->rs);
}
if (rs) {
r300->tcl_bypass = rs->rs.bypass_vs_clip_and_viewport;
r300->polygon_offset_enabled = rs->rs.offset_cw || rs->rs.offset_ccw;
} else {
r300->tcl_bypass = FALSE;
r300->polygon_offset_enabled = FALSE;
}
r300->rs_state.state = rs;
r300->rs_state.dirty = TRUE;
/* XXX Why is this still needed, dammit!? */
r300->scissor_state.dirty = TRUE;
r300->viewport_state.dirty = TRUE;
/* XXX Clean these up when we move to atom emits */
if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
}
/* Free rasterizer state. */
static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
{
FREE(state);
}
static void*
r300_create_sampler_state(struct pipe_context* pipe,
const struct pipe_sampler_state* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
int lod_bias;
union util_color uc;
sampler->state = *state;
sampler->filter0 |=
(r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
(r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
(r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
state->mag_img_filter,
state->min_mip_filter,
state->max_anisotropy > 0);
/* Unfortunately, r300-r500 don't support floating-point mipmap lods. */
/* We must pass these to the emit function to clamp them properly. */
sampler->min_lod = MAX2((unsigned)state->min_lod, 0);
sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0);
lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM, &uc);
sampler->border_color = uc.ui;
/* R500-specific fixups and optimizations */
if (r300_screen(r300->context.screen)->caps->is_r500) {
sampler->filter1 |= R500_BORDER_FIX;
}
return (void*)sampler;
}
static void r300_bind_sampler_states(struct pipe_context* pipe,
unsigned count,
void** states)
{
struct r300_context* r300 = r300_context(pipe);
int i;
if (count > 8) {
return;
}
for (i = 0; i < count; i++) {
if (r300->sampler_states[i] != states[i]) {
r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
r300->dirty_state |= (R300_NEW_SAMPLER << i);
}
}
r300->sampler_count = count;
/* Pick a fragment shader based on the texture compare state. */
if (r300->fs && (r300->dirty_state & R300_ANY_NEW_SAMPLERS)) {
if (r300_pick_fragment_shader(r300)) {
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER |
R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
}
}
static void r300_lacks_vertex_textures(struct pipe_context* pipe,
unsigned count,
void** states)
{
}
static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
{
FREE(state);
}
static void r300_set_sampler_textures(struct pipe_context* pipe,
unsigned count,
struct pipe_texture** texture)
{
struct r300_context* r300 = r300_context(pipe);
boolean is_r500 = r300_screen(r300->context.screen)->caps->is_r500;
int i;
/* XXX magic num */
if (count > 8) {
return;
}
for (i = 0; i < count; i++) {
if (r300->textures[i] != (struct r300_texture*)texture[i]) {
pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
texture[i]);
r300->dirty_state |= (R300_NEW_TEXTURE << i);
/* R300-specific - set the texrect factor in a fragment shader */
if (!is_r500 && r300->textures[i]->is_npot) {
/* XXX It would be nice to re-emit just 1 constant,
* XXX not all of them */
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
}
}
for (i = count; i < 8; i++) {
if (r300->textures[i]) {
pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
NULL);
r300->dirty_state |= (R300_NEW_TEXTURE << i);
}
}
r300->texture_count = count;
}
static void r300_set_scissor_state(struct pipe_context* pipe,
const struct pipe_scissor_state* state)
{
struct r300_context* r300 = r300_context(pipe);
memcpy(r300->scissor_state.state, state,
sizeof(struct pipe_scissor_state));
r300->scissor_state.dirty = TRUE;
}
static void r300_set_viewport_state(struct pipe_context* pipe,
const struct pipe_viewport_state* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_viewport_state* viewport =
(struct r300_viewport_state*)r300->viewport_state.state;
/* Do the transform in HW. */
viewport->vte_control = R300_VTX_W0_FMT;
if (state->scale[0] != 1.0f) {
viewport->xscale = state->scale[0];
viewport->vte_control |= R300_VPORT_X_SCALE_ENA;
}
if (state->scale[1] != 1.0f) {
viewport->yscale = state->scale[1];
viewport->vte_control |= R300_VPORT_Y_SCALE_ENA;
}
if (state->scale[2] != 1.0f) {
viewport->zscale = state->scale[2];
viewport->vte_control |= R300_VPORT_Z_SCALE_ENA;
}
if (state->translate[0] != 0.0f) {
viewport->xoffset = state->translate[0];
viewport->vte_control |= R300_VPORT_X_OFFSET_ENA;
}
if (state->translate[1] != 0.0f) {
viewport->yoffset = state->translate[1];
viewport->vte_control |= R300_VPORT_Y_OFFSET_ENA;
}
if (state->translate[2] != 0.0f) {
viewport->zoffset = state->translate[2];
viewport->vte_control |= R300_VPORT_Z_OFFSET_ENA;
}
r300->viewport_state.dirty = TRUE;
if (r300->fs && r300->fs->inputs.wpos != ATTR_UNUSED) {
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
}
static void r300_set_vertex_buffers(struct pipe_context* pipe,
unsigned count,
const struct pipe_vertex_buffer* buffers)
{
struct r300_context* r300 = r300_context(pipe);
memcpy(r300->vertex_buffer, buffers,
sizeof(struct pipe_vertex_buffer) * count);
r300->vertex_buffer_count = count;
if (r300->draw) {
draw_flush(r300->draw);
draw_set_vertex_buffers(r300->draw, count, buffers);
}
r300->vertex_format_state.dirty = TRUE;
}
static boolean r300_validate_aos(struct r300_context *r300)
{
struct pipe_vertex_buffer *vbuf = r300->vertex_buffer;
struct pipe_vertex_element *velem = r300->velems->velem;
int i;
/* Check if formats and strides are aligned to the size of DWORD. */
for (i = 0; i < r300->velems->count; i++) {
if (vbuf[velem[i].vertex_buffer_index].stride % 4 != 0 ||
util_format_get_blocksize(velem[i].src_format) % 4 != 0) {
return FALSE;
}
}
return TRUE;
}
static void* r300_create_vertex_elements_state(struct pipe_context* pipe,
unsigned count,
const struct pipe_vertex_element* attribs)
{
struct r300_velems_state *velems;
/*XXX should precalculate state here instead of later */
assert(count <= PIPE_MAX_ATTRIBS);
velems = CALLOC_STRUCT(r300_velems_state);
if (velems) {
velems->count = count;
memcpy(velems->velem, attribs, sizeof(struct pipe_vertex_element) * count);
}
return velems;
}
static void r300_bind_vertex_elements_state(struct pipe_context *pipe,
void *velems)
{
struct r300_context *r300 = r300_context(pipe);
struct r300_velems_state *r300_velems = (struct r300_velems_state *) velems;
if (velems == NULL) {
return;
}
r300->velems = r300_velems;
if (r300->draw) {
draw_flush(r300->draw);
draw_set_vertex_elements(r300->draw, r300_velems->count, r300_velems->velem);
}
if (!r300_validate_aos(r300)) {
/* XXX We should fallback using draw. */
assert(0);
abort();
}
}
static void r300_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
{
FREE(velems);
}
static void* r300_create_vs_state(struct pipe_context* pipe,
const struct pipe_shader_state* shader)
{
struct r300_context* r300 = r300_context(pipe);
if (r300_screen(pipe->screen)->caps->has_tcl) {
struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
/* Copy state directly into shader. */
vs->state = *shader;
vs->state.tokens = tgsi_dup_tokens(shader->tokens);
tgsi_scan_shader(shader->tokens, &vs->info);
return (void*)vs;
} else {
return draw_create_vertex_shader(r300->draw, shader);
}
}
static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
{
struct r300_context* r300 = r300_context(pipe);
if (r300_screen(pipe->screen)->caps->has_tcl) {
struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
if (vs == NULL) {
r300->vs = NULL;
return;
} else if (!vs->translated) {
r300_translate_vertex_shader(r300, vs);
}
r300->vs = vs;
if (r300->fs) {
r300_vertex_shader_setup_wpos(r300);
}
r300->vertex_format_state.dirty = TRUE;
r300->dirty_state |=
R300_NEW_VERTEX_SHADER | R300_NEW_VERTEX_SHADER_CONSTANTS;
} else {
draw_flush(r300->draw);
draw_bind_vertex_shader(r300->draw,
(struct draw_vertex_shader*)shader);
}
}
static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
{
struct r300_context* r300 = r300_context(pipe);
if (r300_screen(pipe->screen)->caps->has_tcl) {
struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
rc_constants_destroy(&vs->code.constants);
FREE((void*)vs->state.tokens);
FREE(shader);
} else {
draw_delete_vertex_shader(r300->draw,
(struct draw_vertex_shader*)shader);
}
}
static void r300_set_constant_buffer(struct pipe_context *pipe,
uint shader, uint index,
struct pipe_buffer *buf)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_screen *r300screen = r300_screen(pipe->screen);
void *mapped;
int max_size = 0;
if (buf == NULL || buf->size == 0 ||
(mapped = pipe_buffer_map(pipe->screen, buf, PIPE_BUFFER_USAGE_CPU_READ)) == NULL)
{
r300->shader_constants[shader].count = 0;
return;
}
assert((buf->size % 4 * sizeof(float)) == 0);
/* Check the size of the constant buffer. */
switch (shader) {
case PIPE_SHADER_VERTEX:
max_size = 256;
break;
case PIPE_SHADER_FRAGMENT:
if (r300screen->caps->is_r500) {
max_size = 256;
/* XXX Implement emission of r400's extended constant buffer. */
/*} else if (r300screen->caps->is_r400) {
max_size = 64;*/
} else {
max_size = 32;
}
break;
default:
assert(0);
}
/* XXX Subtract immediates and RC_STATE_* variables. */
if (buf->size > (sizeof(float) * 4 * max_size)) {
debug_printf("r300: Max size of the constant buffer is "
"%i*4 floats.\n", max_size);
abort();
}
memcpy(r300->shader_constants[shader].constants, mapped, buf->size);
r300->shader_constants[shader].count = buf->size / (4 * sizeof(float));
pipe_buffer_unmap(pipe->screen, buf);
if (shader == PIPE_SHADER_VERTEX)
r300->dirty_state |= R300_NEW_VERTEX_SHADER_CONSTANTS;
else if (shader == PIPE_SHADER_FRAGMENT)
r300->dirty_state |= R300_NEW_FRAGMENT_SHADER_CONSTANTS;
}
void r300_init_state_functions(struct r300_context* r300)
{
r300->context.create_blend_state = r300_create_blend_state;
r300->context.bind_blend_state = r300_bind_blend_state;
r300->context.delete_blend_state = r300_delete_blend_state;
r300->context.set_blend_color = r300_set_blend_color;
r300->context.set_clip_state = r300_set_clip_state;
r300->context.set_constant_buffer = r300_set_constant_buffer;
r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
r300->context.set_stencil_ref = r300_set_stencil_ref;
r300->context.set_framebuffer_state = r300_set_framebuffer_state;
r300->context.create_fs_state = r300_create_fs_state;
r300->context.bind_fs_state = r300_bind_fs_state;
r300->context.delete_fs_state = r300_delete_fs_state;
r300->context.set_polygon_stipple = r300_set_polygon_stipple;
r300->context.create_rasterizer_state = r300_create_rs_state;
r300->context.bind_rasterizer_state = r300_bind_rs_state;
r300->context.delete_rasterizer_state = r300_delete_rs_state;
r300->context.create_sampler_state = r300_create_sampler_state;
r300->context.bind_fragment_sampler_states = r300_bind_sampler_states;
r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures;
r300->context.delete_sampler_state = r300_delete_sampler_state;
r300->context.set_fragment_sampler_textures = r300_set_sampler_textures;
r300->context.set_scissor_state = r300_set_scissor_state;
r300->context.set_viewport_state = r300_set_viewport_state;
r300->context.set_vertex_buffers = r300_set_vertex_buffers;
r300->context.create_vertex_elements_state = r300_create_vertex_elements_state;
r300->context.bind_vertex_elements_state = r300_bind_vertex_elements_state;
r300->context.delete_vertex_elements_state = r300_delete_vertex_elements_state;
r300->context.create_vs_state = r300_create_vs_state;
r300->context.bind_vs_state = r300_bind_vs_state;
r300->context.delete_vs_state = r300_delete_vs_state;
}