/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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 "i830_context.h"
#include "i830_reg.h"
#include "intel_batchbuffer.h"
#include "intel_mipmap_tree.h"
#include "intel_regions.h"
#include "intel_tris.h"
#include "intel_fbo.h"
#include "intel_buffers.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_vertex.h"
#include "swrast_setup/swrast_setup.h"
#include "main/renderbuffer.h"
#include "main/framebuffer.h"
#include "main/fbobject.h"
#define FILE_DEBUG_FLAG DEBUG_STATE
static bool i830_check_vertex_size(struct intel_context *intel,
GLuint expected);
#define SZ_TO_HW(sz) ((sz-2)&0x3)
#define EMIT_SZ(sz) (EMIT_1F + (sz) - 1)
#define EMIT_ATTR( ATTR, STYLE, V0 ) \
do { \
intel->vertex_attrs[intel->vertex_attr_count].attrib = (ATTR); \
intel->vertex_attrs[intel->vertex_attr_count].format = (STYLE); \
intel->vertex_attr_count++; \
v0 |= V0; \
} while (0)
#define EMIT_PAD( N ) \
do { \
intel->vertex_attrs[intel->vertex_attr_count].attrib = 0; \
intel->vertex_attrs[intel->vertex_attr_count].format = EMIT_PAD; \
intel->vertex_attrs[intel->vertex_attr_count].offset = (N); \
intel->vertex_attr_count++; \
} while (0)
#define VRTX_TEX_SET_FMT(n, x) ((x)<<((n)*2))
#define TEXBIND_SET(n, x) ((x)<<((n)*4))
static void
i830_render_prevalidate(struct intel_context *intel)
{
}
static void
i830_render_start(struct intel_context *intel)
{
struct gl_context *ctx = &intel->ctx;
struct i830_context *i830 = i830_context(ctx);
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
GLbitfield64 index_bitset = tnl->render_inputs_bitset;
GLuint v0 = _3DSTATE_VFT0_CMD;
GLuint v2 = _3DSTATE_VFT1_CMD;
GLuint mcsb1 = 0;
/* Important:
*/
VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
intel->vertex_attr_count = 0;
/* EMIT_ATTR's must be in order as they tell t_vertex.c how to
* build up a hardware vertex.
*/
if (index_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)) {
EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, VFT0_XYZW);
intel->coloroffset = 4;
}
else {
EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, VFT0_XYZ);
intel->coloroffset = 3;
}
if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_POINTSIZE)) {
EMIT_ATTR(_TNL_ATTRIB_POINTSIZE, EMIT_1F, VFT0_POINT_WIDTH);
}
EMIT_ATTR(_TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, VFT0_DIFFUSE);
intel->specoffset = 0;
if (index_bitset & (BITFIELD64_BIT(_TNL_ATTRIB_COLOR1) |
BITFIELD64_BIT(_TNL_ATTRIB_FOG))) {
if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_COLOR1)) {
intel->specoffset = intel->coloroffset + 1;
EMIT_ATTR(_TNL_ATTRIB_COLOR1, EMIT_3UB_3F_BGR, VFT0_SPEC);
}
else
EMIT_PAD(3);
if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_FOG))
EMIT_ATTR(_TNL_ATTRIB_FOG, EMIT_1UB_1F, VFT0_SPEC);
else
EMIT_PAD(1);
}
if (index_bitset & BITFIELD64_RANGE(_TNL_ATTRIB_TEX0, _TNL_NUM_TEX)) {
int i, count = 0;
for (i = 0; i < I830_TEX_UNITS; i++) {
if (index_bitset & BITFIELD64_BIT(_TNL_ATTRIB_TEX(i))) {
GLuint sz = VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]->size;
GLuint emit;
GLuint mcs = (i830->state.Tex[i][I830_TEXREG_MCS] &
~TEXCOORDTYPE_MASK);
switch (sz) {
case 1:
case 2:
emit = EMIT_2F;
sz = 2;
mcs |= TEXCOORDTYPE_CARTESIAN;
break;
case 3:
emit = EMIT_3F;
sz = 3;
mcs |= TEXCOORDTYPE_VECTOR;
break;
case 4:
emit = EMIT_3F_XYW;
sz = 3;
mcs |= TEXCOORDTYPE_HOMOGENEOUS;
break;
default:
continue;
};
EMIT_ATTR(_TNL_ATTRIB_TEX0 + i, emit, 0);
v2 |= VRTX_TEX_SET_FMT(count, SZ_TO_HW(sz));
mcsb1 |= (count + 8) << (i * 4);
if (mcs != i830->state.Tex[i][I830_TEXREG_MCS]) {
I830_STATECHANGE(i830, I830_UPLOAD_TEX(i));
i830->state.Tex[i][I830_TEXREG_MCS] = mcs;
}
count++;
}
}
v0 |= VFT0_TEX_COUNT(count);
}
/* Only need to change the vertex emit code if there has been a
* statechange to a new hardware vertex format:
*/
if (v0 != i830->state.Ctx[I830_CTXREG_VF] ||
v2 != i830->state.Ctx[I830_CTXREG_VF2] ||
mcsb1 != i830->state.Ctx[I830_CTXREG_MCSB1] ||
index_bitset != i830->last_index_bitset) {
int k;
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
/* Must do this *after* statechange, so as not to affect
* buffered vertices reliant on the old state:
*/
intel->vertex_size =
_tnl_install_attrs(ctx,
intel->vertex_attrs,
intel->vertex_attr_count,
intel->ViewportMatrix.m, 0);
intel->vertex_size >>= 2;
i830->state.Ctx[I830_CTXREG_VF] = v0;
i830->state.Ctx[I830_CTXREG_VF2] = v2;
i830->state.Ctx[I830_CTXREG_MCSB1] = mcsb1;
i830->last_index_bitset = index_bitset;
k = i830_check_vertex_size(intel, intel->vertex_size);
assert(k);
}
}
static void
i830_reduced_primitive_state(struct intel_context *intel, GLenum rprim)
{
struct i830_context *i830 = i830_context(&intel->ctx);
GLuint st1 = i830->state.Stipple[I830_STPREG_ST1];
st1 &= ~ST1_ENABLE;
switch (rprim) {
case GL_TRIANGLES:
if (intel->ctx.Polygon.StippleFlag && intel->hw_stipple)
st1 |= ST1_ENABLE;
break;
case GL_LINES:
case GL_POINTS:
default:
break;
}
i830->intel.reduced_primitive = rprim;
if (st1 != i830->state.Stipple[I830_STPREG_ST1]) {
INTEL_FIREVERTICES(intel);
I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
i830->state.Stipple[I830_STPREG_ST1] = st1;
}
}
/* Pull apart the vertex format registers and figure out how large a
* vertex is supposed to be.
*/
static bool
i830_check_vertex_size(struct intel_context *intel, GLuint expected)
{
struct i830_context *i830 = i830_context(&intel->ctx);
int vft0 = i830->state.Ctx[I830_CTXREG_VF];
int vft1 = i830->state.Ctx[I830_CTXREG_VF2];
int nrtex = (vft0 & VFT0_TEX_COUNT_MASK) >> VFT0_TEX_COUNT_SHIFT;
int i, sz = 0;
switch (vft0 & VFT0_XYZW_MASK) {
case VFT0_XY:
sz = 2;
break;
case VFT0_XYZ:
sz = 3;
break;
case VFT0_XYW:
sz = 3;
break;
case VFT0_XYZW:
sz = 4;
break;
default:
fprintf(stderr, "no xyzw specified\n");
return 0;
}
if (vft0 & VFT0_SPEC)
sz++;
if (vft0 & VFT0_DIFFUSE)
sz++;
if (vft0 & VFT0_DEPTH_OFFSET)
sz++;
if (vft0 & VFT0_POINT_WIDTH)
sz++;
for (i = 0; i < nrtex; i++) {
switch (vft1 & VFT1_TEX0_MASK) {
case TEXCOORDFMT_2D:
sz += 2;
break;
case TEXCOORDFMT_3D:
sz += 3;
break;
case TEXCOORDFMT_4D:
sz += 4;
break;
case TEXCOORDFMT_1D:
sz += 1;
break;
}
vft1 >>= VFT1_TEX1_SHIFT;
}
if (sz != expected)
fprintf(stderr, "vertex size mismatch %d/%d\n", sz, expected);
return sz == expected;
}
static void
i830_emit_invarient_state(struct intel_context *intel)
{
BATCH_LOCALS;
BEGIN_BATCH(29);
OUT_BATCH(_3DSTATE_DFLT_DIFFUSE_CMD);
OUT_BATCH(0);
OUT_BATCH(_3DSTATE_DFLT_SPEC_CMD);
OUT_BATCH(0);
OUT_BATCH(_3DSTATE_DFLT_Z_CMD);
OUT_BATCH(0);
OUT_BATCH(_3DSTATE_FOG_MODE_CMD);
OUT_BATCH(FOGFUNC_ENABLE |
FOG_LINEAR_CONST | FOGSRC_INDEX_Z | ENABLE_FOG_DENSITY);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(_3DSTATE_MAP_TEX_STREAM_CMD |
MAP_UNIT(0) |
DISABLE_TEX_STREAM_BUMP |
ENABLE_TEX_STREAM_COORD_SET |
TEX_STREAM_COORD_SET(0) |
ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(0));
OUT_BATCH(_3DSTATE_MAP_TEX_STREAM_CMD |
MAP_UNIT(1) |
DISABLE_TEX_STREAM_BUMP |
ENABLE_TEX_STREAM_COORD_SET |
TEX_STREAM_COORD_SET(1) |
ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(1));
OUT_BATCH(_3DSTATE_MAP_TEX_STREAM_CMD |
MAP_UNIT(2) |
DISABLE_TEX_STREAM_BUMP |
ENABLE_TEX_STREAM_COORD_SET |
TEX_STREAM_COORD_SET(2) |
ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(2));
OUT_BATCH(_3DSTATE_MAP_TEX_STREAM_CMD |
MAP_UNIT(3) |
DISABLE_TEX_STREAM_BUMP |
ENABLE_TEX_STREAM_COORD_SET |
TEX_STREAM_COORD_SET(3) |
ENABLE_TEX_STREAM_MAP_IDX | TEX_STREAM_MAP_IDX(3));
OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(0));
OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(1));
OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(2));
OUT_BATCH(_3DSTATE_MAP_COORD_TRANSFORM);
OUT_BATCH(DISABLE_TEX_TRANSFORM | TEXTURE_SET(3));
OUT_BATCH(_3DSTATE_VERTEX_TRANSFORM);
OUT_BATCH(DISABLE_VIEWPORT_TRANSFORM | DISABLE_PERSPECTIVE_DIVIDE);
OUT_BATCH(_3DSTATE_W_STATE_CMD);
OUT_BATCH(MAGIC_W_STATE_DWORD1);
OUT_BATCH(0x3f800000 /* 1.0 in IEEE float */ );
OUT_BATCH(_3DSTATE_COLOR_FACTOR_CMD);
OUT_BATCH(0x80808080); /* .5 required in alpha for GL_DOT3_RGBA_EXT */
ADVANCE_BATCH();
}
#define emit( intel, state, size ) \
intel_batchbuffer_data(intel, state, size, false)
static GLuint
get_dirty(struct i830_hw_state *state)
{
return state->active & ~state->emitted;
}
static GLuint
get_state_size(struct i830_hw_state *state)
{
GLuint dirty = get_dirty(state);
GLuint sz = 0;
GLuint i;
if (dirty & I830_UPLOAD_INVARIENT)
sz += 40 * sizeof(int);
if (dirty & I830_UPLOAD_RASTER_RULES)
sz += sizeof(state->RasterRules);
if (dirty & I830_UPLOAD_CTX)
sz += sizeof(state->Ctx);
if (dirty & I830_UPLOAD_BUFFERS)
sz += sizeof(state->Buffer);
if (dirty & I830_UPLOAD_STIPPLE)
sz += sizeof(state->Stipple);
for (i = 0; i < I830_TEX_UNITS; i++) {
if ((dirty & I830_UPLOAD_TEX(i)))
sz += sizeof(state->Tex[i]);
if (dirty & I830_UPLOAD_TEXBLEND(i))
sz += state->TexBlendWordsUsed[i] * 4;
}
return sz;
}
/* Push the state into the sarea and/or texture memory.
*/
static void
i830_emit_state(struct intel_context *intel)
{
struct i830_context *i830 = i830_context(&intel->ctx);
struct i830_hw_state *state = &i830->state;
int i, count;
GLuint dirty;
drm_intel_bo *aper_array[3 + I830_TEX_UNITS];
int aper_count;
GET_CURRENT_CONTEXT(ctx);
BATCH_LOCALS;
/* We don't hold the lock at this point, so want to make sure that
* there won't be a buffer wrap between the state emits and the primitive
* emit header.
*
* It might be better to talk about explicit places where
* scheduling is allowed, rather than assume that it is whenever a
* batchbuffer fills up.
*/
intel_batchbuffer_require_space(intel,
get_state_size(state) + INTEL_PRIM_EMIT_SIZE,
false);
count = 0;
again:
aper_count = 0;
dirty = get_dirty(state);
aper_array[aper_count++] = intel->batch.bo;
if (dirty & I830_UPLOAD_BUFFERS) {
aper_array[aper_count++] = state->draw_region->bo;
if (state->depth_region)
aper_array[aper_count++] = state->depth_region->bo;
}
for (i = 0; i < I830_TEX_UNITS; i++)
if (dirty & I830_UPLOAD_TEX(i)) {
if (state->tex_buffer[i]) {
aper_array[aper_count++] = state->tex_buffer[i];
}
}
if (dri_bufmgr_check_aperture_space(aper_array, aper_count)) {
if (count == 0) {
count++;
intel_batchbuffer_flush(intel);
goto again;
} else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "i830 emit state");
assert(0);
}
}
/* Do this here as we may have flushed the batchbuffer above,
* causing more state to be dirty!
*/
dirty = get_dirty(state);
state->emitted |= dirty;
assert(get_dirty(state) == 0);
if (dirty & I830_UPLOAD_INVARIENT) {
DBG("I830_UPLOAD_INVARIENT:\n");
i830_emit_invarient_state(intel);
}
if (dirty & I830_UPLOAD_RASTER_RULES) {
DBG("I830_UPLOAD_RASTER_RULES:\n");
emit(intel, state->RasterRules, sizeof(state->RasterRules));
}
if (dirty & I830_UPLOAD_CTX) {
DBG("I830_UPLOAD_CTX:\n");
emit(intel, state->Ctx, sizeof(state->Ctx));
}
if (dirty & I830_UPLOAD_BUFFERS) {
GLuint count = 15;
DBG("I830_UPLOAD_BUFFERS:\n");
if (state->depth_region)
count += 3;
BEGIN_BATCH(count);
OUT_BATCH(state->Buffer[I830_DESTREG_CBUFADDR0]);
OUT_BATCH(state->Buffer[I830_DESTREG_CBUFADDR1]);
OUT_RELOC(state->draw_region->bo,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
if (state->depth_region) {
OUT_BATCH(state->Buffer[I830_DESTREG_DBUFADDR0]);
OUT_BATCH(state->Buffer[I830_DESTREG_DBUFADDR1]);
OUT_RELOC(state->depth_region->bo,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
}
OUT_BATCH(state->Buffer[I830_DESTREG_DV0]);
OUT_BATCH(state->Buffer[I830_DESTREG_DV1]);
OUT_BATCH(state->Buffer[I830_DESTREG_SENABLE]);
OUT_BATCH(state->Buffer[I830_DESTREG_SR0]);
OUT_BATCH(state->Buffer[I830_DESTREG_SR1]);
OUT_BATCH(state->Buffer[I830_DESTREG_SR2]);
assert(state->Buffer[I830_DESTREG_DRAWRECT0] != MI_NOOP);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT0]);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT1]);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT2]);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT3]);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT4]);
OUT_BATCH(state->Buffer[I830_DESTREG_DRAWRECT5]);
ADVANCE_BATCH();
}
if (dirty & I830_UPLOAD_STIPPLE) {
DBG("I830_UPLOAD_STIPPLE:\n");
emit(intel, state->Stipple, sizeof(state->Stipple));
}
for (i = 0; i < I830_TEX_UNITS; i++) {
if ((dirty & I830_UPLOAD_TEX(i))) {
DBG("I830_UPLOAD_TEX(%d):\n", i);
BEGIN_BATCH(I830_TEX_SETUP_SIZE + 1);
OUT_BATCH(state->Tex[i][I830_TEXREG_TM0LI]);
OUT_RELOC(state->tex_buffer[i],
I915_GEM_DOMAIN_SAMPLER, 0,
state->tex_offset[i]);
OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S1]);
OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S2]);
OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S3]);
OUT_BATCH(state->Tex[i][I830_TEXREG_TM0S4]);
OUT_BATCH(state->Tex[i][I830_TEXREG_MCS]);
OUT_BATCH(state->Tex[i][I830_TEXREG_CUBE]);
ADVANCE_BATCH();
}
if (dirty & I830_UPLOAD_TEXBLEND(i)) {
DBG("I830_UPLOAD_TEXBLEND(%d): %d words\n", i,
state->TexBlendWordsUsed[i]);
emit(intel, state->TexBlend[i], state->TexBlendWordsUsed[i] * 4);
}
}
assert(get_dirty(state) == 0);
}
static void
i830_destroy_context(struct intel_context *intel)
{
GLuint i;
struct i830_context *i830 = i830_context(&intel->ctx);
intel_region_release(&i830->state.draw_region);
intel_region_release(&i830->state.depth_region);
for (i = 0; i < I830_TEX_UNITS; i++) {
if (i830->state.tex_buffer[i] != NULL) {
drm_intel_bo_unreference(i830->state.tex_buffer[i]);
i830->state.tex_buffer[i] = NULL;
}
}
_tnl_free_vertices(&intel->ctx);
}
static uint32_t i830_render_target_format_for_mesa_format[MESA_FORMAT_COUNT] =
{
[MESA_FORMAT_ARGB8888] = DV_PF_8888,
[MESA_FORMAT_XRGB8888] = DV_PF_8888,
[MESA_FORMAT_RGB565] = DV_PF_565,
[MESA_FORMAT_ARGB1555] = DV_PF_1555,
[MESA_FORMAT_ARGB4444] = DV_PF_4444,
};
static bool
i830_render_target_supported(struct intel_context *intel,
struct gl_renderbuffer *rb)
{
gl_format format = rb->Format;
if (format == MESA_FORMAT_S8_Z24 ||
format == MESA_FORMAT_X8_Z24 ||
format == MESA_FORMAT_Z16) {
return true;
}
return i830_render_target_format_for_mesa_format[format] != 0;
}
static void
i830_set_draw_region(struct intel_context *intel,
struct intel_region *color_regions[],
struct intel_region *depth_region,
GLuint num_regions)
{
struct i830_context *i830 = i830_context(&intel->ctx);
struct gl_context *ctx = &intel->ctx;
struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
struct gl_renderbuffer *drb;
struct intel_renderbuffer *idrb = NULL;
GLuint value;
struct i830_hw_state *state = &i830->state;
uint32_t draw_x, draw_y;
if (state->draw_region != color_regions[0]) {
intel_region_reference(&state->draw_region, color_regions[0]);
}
if (state->depth_region != depth_region) {
intel_region_reference(&state->depth_region, depth_region);
}
/*
* Set stride/cpp values
*/
i915_set_buf_info_for_region(&state->Buffer[I830_DESTREG_CBUFADDR0],
color_regions[0], BUF_3D_ID_COLOR_BACK);
i915_set_buf_info_for_region(&state->Buffer[I830_DESTREG_DBUFADDR0],
depth_region, BUF_3D_ID_DEPTH);
/*
* Compute/set I830_DESTREG_DV1 value
*/
value = (DSTORG_HORT_BIAS(0x8) | /* .5 */
DSTORG_VERT_BIAS(0x8) | DEPTH_IS_Z); /* .5 */
if (irb != NULL) {
value |= i830_render_target_format_for_mesa_format[intel_rb_format(irb)];
}
if (depth_region && depth_region->cpp == 4) {
value |= DEPTH_FRMT_24_FIXED_8_OTHER;
}
else {
value |= DEPTH_FRMT_16_FIXED;
}
state->Buffer[I830_DESTREG_DV1] = value;
drb = ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
if (!drb)
drb = ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
if (drb)
idrb = intel_renderbuffer(drb);
/* We set up the drawing rectangle to be offset into the color
* region's location in the miptree. If it doesn't match with
* depth's offsets, we can't render to it.
*
* (Well, not actually true -- the hw grew a bit to let depth's
* offset get forced to 0,0. We may want to use that if people are
* hitting that case. Also, some configurations may be supportable
* by tweaking the start offset of the buffers around, which we
* can't do in general due to tiling)
*/
FALLBACK(intel, I830_FALLBACK_DRAW_OFFSET,
idrb && irb && (idrb->draw_x != irb->draw_x ||
idrb->draw_y != irb->draw_y));
if (irb) {
draw_x = irb->draw_x;
draw_y = irb->draw_y;
} else if (idrb) {
draw_x = idrb->draw_x;
draw_y = idrb->draw_y;
} else {
draw_x = 0;
draw_y = 0;
}
state->Buffer[I830_DESTREG_DRAWRECT0] = _3DSTATE_DRAWRECT_INFO;
state->Buffer[I830_DESTREG_DRAWRECT1] = 0;
state->Buffer[I830_DESTREG_DRAWRECT2] = (draw_y << 16) | draw_x;
state->Buffer[I830_DESTREG_DRAWRECT3] =
((ctx->DrawBuffer->Width + draw_x - 1) & 0xffff) |
((ctx->DrawBuffer->Height + draw_y - 1) << 16);
state->Buffer[I830_DESTREG_DRAWRECT4] = (draw_y << 16) | draw_x;
state->Buffer[I830_DESTREG_DRAWRECT5] = MI_NOOP;
I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
}
/**
* Update the hardware state for drawing into a window or framebuffer object.
*
* Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other
* places within the driver.
*
* Basically, this needs to be called any time the current framebuffer
* changes, the renderbuffers change, or we need to draw into different
* color buffers.
*/
static void
i830_update_draw_buffer(struct intel_context *intel)
{
struct gl_context *ctx = &intel->ctx;
struct gl_framebuffer *fb = ctx->DrawBuffer;
struct intel_region *colorRegions[MAX_DRAW_BUFFERS], *depthRegion = NULL;
struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL;
if (!fb) {
/* this can happen during the initial context initialization */
return;
}
irbDepth = intel_get_renderbuffer(fb, BUFFER_DEPTH);
irbStencil = intel_get_renderbuffer(fb, BUFFER_STENCIL);
/* Do this here, not core Mesa, since this function is called from
* many places within the driver.
*/
if (ctx->NewState & _NEW_BUFFERS) {
/* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */
_mesa_update_framebuffer(ctx);
/* this updates the DrawBuffer's Width/Height if it's a FBO */
_mesa_update_draw_buffer_bounds(ctx);
}
if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
/* this may occur when we're called by glBindFrameBuffer() during
* the process of someone setting up renderbuffers, etc.
*/
/*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
return;
}
/* How many color buffers are we drawing into?
*
* If there are zero buffers or the buffer is too big, don't configure any
* regions for hardware drawing. We'll fallback to software below. Not
* having regions set makes some of the software fallback paths faster.
*/
if ((fb->Width > ctx->Const.MaxRenderbufferSize)
|| (fb->Height > ctx->Const.MaxRenderbufferSize)
|| (fb->_NumColorDrawBuffers == 0)) {
/* writing to 0 */
colorRegions[0] = NULL;
}
else if (fb->_NumColorDrawBuffers > 1) {
int i;
struct intel_renderbuffer *irb;
for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
colorRegions[i] = (irb && irb->mt) ? irb->mt->region : NULL;
}
}
else {
/* Get the intel_renderbuffer for the single colorbuffer we're drawing
* into.
*/
if (_mesa_is_winsys_fbo(fb)) {
/* drawing to window system buffer */
if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)
colorRegions[0] = intel_get_rb_region(fb, BUFFER_FRONT_LEFT);
else
colorRegions[0] = intel_get_rb_region(fb, BUFFER_BACK_LEFT);
}
else {
/* drawing to user-created FBO */
struct intel_renderbuffer *irb;
irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
colorRegions[0] = (irb && irb->mt->region) ? irb->mt->region : NULL;
}
}
if (!colorRegions[0]) {
FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, true);
}
else {
FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, false);
}
/* Check for depth fallback. */
if (irbDepth && irbDepth->mt) {
FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, false);
depthRegion = irbDepth->mt->region;
} else if (irbDepth && !irbDepth->mt) {
FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, true);
depthRegion = NULL;
} else { /* !irbDepth */
/* No fallback is needed because there is no depth buffer. */
FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, false);
depthRegion = NULL;
}
/* Check for stencil fallback. */
if (irbStencil && irbStencil->mt) {
assert(intel_rb_format(irbStencil) == MESA_FORMAT_S8_Z24);
FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, false);
} else if (irbStencil && !irbStencil->mt) {
FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, true);
} else { /* !irbStencil */
/* No fallback is needed because there is no stencil buffer. */
FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, false);
}
/* If we have a (packed) stencil buffer attached but no depth buffer,
* we still need to set up the shared depth/stencil state so we can use it.
*/
if (depthRegion == NULL && irbStencil && irbStencil->mt
&& intel_rb_format(irbStencil) == MESA_FORMAT_S8_Z24) {
depthRegion = irbStencil->mt->region;
}
/*
* Update depth and stencil test state
*/
ctx->Driver.Enable(ctx, GL_DEPTH_TEST, ctx->Depth.Test);
ctx->Driver.Enable(ctx, GL_STENCIL_TEST,
(ctx->Stencil.Enabled && fb->Visual.stencilBits > 0));
intel->vtbl.set_draw_region(intel, colorRegions, depthRegion,
fb->_NumColorDrawBuffers);
intel->NewGLState |= _NEW_BUFFERS;
/* update viewport since it depends on window size */
intelCalcViewport(ctx);
/* Set state we know depends on drawable parameters:
*/
ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
ctx->Scissor.Width, ctx->Scissor.Height);
ctx->Driver.DepthRange(ctx, ctx->Viewport.Near, ctx->Viewport.Far);
/* Update culling direction which changes depending on the
* orientation of the buffer:
*/
ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace);
}
/* This isn't really handled at the moment.
*/
static void
i830_new_batch(struct intel_context *intel)
{
struct i830_context *i830 = i830_context(&intel->ctx);
i830->state.emitted = 0;
}
static void
i830_assert_not_dirty( struct intel_context *intel )
{
struct i830_context *i830 = i830_context(&intel->ctx);
assert(!get_dirty(&i830->state));
(void) i830;
}
static void
i830_invalidate_state(struct intel_context *intel, GLuint new_state)
{
struct gl_context *ctx = &intel->ctx;
_swsetup_InvalidateState(ctx, new_state);
_tnl_InvalidateState(ctx, new_state);
_tnl_invalidate_vertex_state(ctx, new_state);
if (new_state & _NEW_LIGHT)
i830_update_provoking_vertex(&intel->ctx);
}
static bool
i830_is_hiz_depth_format(struct intel_context *intel, gl_format format)
{
return false;
}
void
i830InitVtbl(struct i830_context *i830)
{
i830->intel.vtbl.check_vertex_size = i830_check_vertex_size;
i830->intel.vtbl.destroy = i830_destroy_context;
i830->intel.vtbl.emit_state = i830_emit_state;
i830->intel.vtbl.new_batch = i830_new_batch;
i830->intel.vtbl.reduced_primitive_state = i830_reduced_primitive_state;
i830->intel.vtbl.set_draw_region = i830_set_draw_region;
i830->intel.vtbl.update_draw_buffer = i830_update_draw_buffer;
i830->intel.vtbl.update_texture_state = i830UpdateTextureState;
i830->intel.vtbl.render_start = i830_render_start;
i830->intel.vtbl.render_prevalidate = i830_render_prevalidate;
i830->intel.vtbl.assert_not_dirty = i830_assert_not_dirty;
i830->intel.vtbl.finish_batch = intel_finish_vb;
i830->intel.vtbl.invalidate_state = i830_invalidate_state;
i830->intel.vtbl.render_target_supported = i830_render_target_supported;
i830->intel.vtbl.is_hiz_depth_format = i830_is_hiz_depth_format;
}