/**************************************************************************
*
* 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 "main/mtypes.h"
#include "main/enums.h"
#include "main/colormac.h"
#include "main/macros.h"
#include "main/samplerobj.h"
#include "intel_mipmap_tree.h"
#include "intel_tex.h"
#include "i830_context.h"
#include "i830_reg.h"
#include "intel_chipset.h"
static GLuint
translate_texture_format(GLuint mesa_format)
{
switch (mesa_format) {
case MESA_FORMAT_L8:
return MAPSURF_8BIT | MT_8BIT_L8;
case MESA_FORMAT_I8:
return MAPSURF_8BIT | MT_8BIT_I8;
case MESA_FORMAT_A8:
return MAPSURF_8BIT | MT_8BIT_I8; /* Kludge! */
case MESA_FORMAT_AL88:
return MAPSURF_16BIT | MT_16BIT_AY88;
case MESA_FORMAT_RGB565:
return MAPSURF_16BIT | MT_16BIT_RGB565;
case MESA_FORMAT_ARGB1555:
return MAPSURF_16BIT | MT_16BIT_ARGB1555;
case MESA_FORMAT_ARGB4444:
return MAPSURF_16BIT | MT_16BIT_ARGB4444;
case MESA_FORMAT_ARGB8888:
return MAPSURF_32BIT | MT_32BIT_ARGB8888;
case MESA_FORMAT_XRGB8888:
return MAPSURF_32BIT | MT_32BIT_XRGB8888;
case MESA_FORMAT_YCBCR_REV:
return (MAPSURF_422 | MT_422_YCRCB_NORMAL);
case MESA_FORMAT_YCBCR:
return (MAPSURF_422 | MT_422_YCRCB_SWAPY);
case MESA_FORMAT_RGB_FXT1:
case MESA_FORMAT_RGBA_FXT1:
return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1);
case MESA_FORMAT_RGBA_DXT1:
case MESA_FORMAT_RGB_DXT1:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1);
case MESA_FORMAT_RGBA_DXT3:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3);
case MESA_FORMAT_RGBA_DXT5:
return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5);
default:
fprintf(stderr, "%s: bad image format %s\n", __FUNCTION__,
_mesa_get_format_name(mesa_format));
abort();
return 0;
}
}
/* The i915 (and related graphics cores) do not support GL_CLAMP. The
* Intel drivers for "other operating systems" implement GL_CLAMP as
* GL_CLAMP_TO_EDGE, so the same is done here.
*/
static GLuint
translate_wrap_mode(GLenum wrap)
{
switch (wrap) {
case GL_REPEAT:
return TEXCOORDMODE_WRAP;
case GL_CLAMP:
case GL_CLAMP_TO_EDGE:
return TEXCOORDMODE_CLAMP; /* not really correct */
case GL_CLAMP_TO_BORDER:
return TEXCOORDMODE_CLAMP_BORDER;
case GL_MIRRORED_REPEAT:
return TEXCOORDMODE_MIRROR;
default:
return TEXCOORDMODE_WRAP;
}
}
/* Recalculate all state from scratch. Perhaps not the most
* efficient, but this has gotten complex enough that we need
* something which is understandable and reliable.
*/
static bool
i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
{
struct gl_context *ctx = &intel->ctx;
struct i830_context *i830 = i830_context(ctx);
struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
struct gl_texture_object *tObj = tUnit->_Current;
struct intel_texture_object *intelObj = intel_texture_object(tObj);
struct gl_texture_image *firstImage;
struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
GLuint *state = i830->state.Tex[unit], format, pitch;
GLint lodbias;
GLubyte border[4];
GLuint dst_x, dst_y;
memset(state, 0, sizeof(*state));
/*We need to refcount these. */
if (i830->state.tex_buffer[unit] != NULL) {
drm_intel_bo_unreference(i830->state.tex_buffer[unit]);
i830->state.tex_buffer[unit] = NULL;
}
if (!intel_finalize_mipmap_tree(intel, unit))
return false;
/* Get first image here, since intelObj->firstLevel will get set in
* the intel_finalize_mipmap_tree() call above.
*/
firstImage = tObj->Image[0][tObj->BaseLevel];
intel_miptree_get_image_offset(intelObj->mt, tObj->BaseLevel, 0, 0,
&dst_x, &dst_y);
drm_intel_bo_reference(intelObj->mt->region->bo);
i830->state.tex_buffer[unit] = intelObj->mt->region->bo;
pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;
/* XXX: This calculation is probably broken for tiled images with
* a non-page-aligned offset.
*/
i830->state.tex_offset[unit] = dst_x * intelObj->mt->cpp + dst_y * pitch;
format = translate_texture_format(firstImage->TexFormat);
state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
(LOAD_TEXTURE_MAP0 << unit) | 4);
state[I830_TEXREG_TM0S1] =
(((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
if (intelObj->mt->region->tiling != I915_TILING_NONE) {
state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
if (intelObj->mt->region->tiling == I915_TILING_Y)
state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
}
state[I830_TEXREG_TM0S2] =
((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
{
if (tObj->Target == GL_TEXTURE_CUBE_MAP)
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
CUBE_NEGX_ENABLE |
CUBE_POSX_ENABLE |
CUBE_NEGY_ENABLE |
CUBE_POSY_ENABLE |
CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
else
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
}
{
GLuint minFilt, mipFilt, magFilt;
float maxlod;
uint32_t minlod_fixed, maxlod_fixed;
switch (sampler->MinFilter) {
case GL_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NONE;
break;
case GL_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NONE;
break;
case GL_NEAREST_MIPMAP_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_LINEAR_MIPMAP_NEAREST:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_NEAREST_MIPMAP_LINEAR:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_LINEAR;
break;
case GL_LINEAR_MIPMAP_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_LINEAR;
break;
default:
return false;
}
if (sampler->MaxAnisotropy > 1.0) {
minFilt = FILTER_ANISOTROPIC;
magFilt = FILTER_ANISOTROPIC;
}
else {
switch (sampler->MagFilter) {
case GL_NEAREST:
magFilt = FILTER_NEAREST;
break;
case GL_LINEAR:
magFilt = FILTER_LINEAR;
break;
default:
return false;
}
}
lodbias = (int) ((tUnit->LodBias + sampler->LodBias) * 16.0);
if (lodbias < -64)
lodbias = -64;
if (lodbias > 63)
lodbias = 63;
state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
TM0S3_LOD_BIAS_MASK);
#if 0
/* YUV conversion:
*/
if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
#endif
/* We get one field with fraction bits for the maximum
* addressable (smallest resolution) LOD. Use it to cover both
* MAX_LEVEL and MAX_LOD.
*/
minlod_fixed = U_FIXED(CLAMP(sampler->MinLod, 0.0, 11), 4);
maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
if (intel->intelScreen->deviceID == PCI_CHIP_I855_GM ||
intel->intelScreen->deviceID == PCI_CHIP_I865_G) {
maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11.75), 2);
maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 3) >> 2);
state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT;
state[I830_TEXREG_TM0S2] |= TM0S2_LOD_PRECLAMP;
} else {
maxlod_fixed = U_FIXED(CLAMP(maxlod, 0.0, 11), 0);
maxlod_fixed = MAX2(maxlod_fixed, (minlod_fixed + 15) >> 4);
state[I830_TEXREG_TM0S3] |= maxlod_fixed << TM0S3_MIN_MIP_SHIFT_830;
}
state[I830_TEXREG_TM0S3] |= minlod_fixed << TM0S3_MAX_MIP_SHIFT;
state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
(mipFilt << TM0S3_MIP_FILTER_SHIFT) |
(magFilt << TM0S3_MAG_FILTER_SHIFT));
}
{
GLenum ws = sampler->WrapS;
GLenum wt = sampler->WrapT;
/* 3D textures not available on i830
*/
if (tObj->Target == GL_TEXTURE_3D)
return false;
state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
MAP_UNIT(unit) |
ENABLE_TEXCOORD_PARAMS |
ss3 |
ENABLE_ADDR_V_CNTL |
TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
| ENABLE_ADDR_U_CNTL |
TEXCOORD_ADDR_U_MODE(translate_wrap_mode
(ws)));
}
/* convert border color from float to ubyte */
CLAMPED_FLOAT_TO_UBYTE(border[0], sampler->BorderColor.f[0]);
CLAMPED_FLOAT_TO_UBYTE(border[1], sampler->BorderColor.f[1]);
CLAMPED_FLOAT_TO_UBYTE(border[2], sampler->BorderColor.f[2]);
CLAMPED_FLOAT_TO_UBYTE(border[3], sampler->BorderColor.f[3]);
state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
border[0],
border[1],
border[2]);
I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), true);
/* memcmp was already disabled, but definitely won't work as the
* region might now change and that wouldn't be detected:
*/
I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
return true;
}
void
i830UpdateTextureState(struct intel_context *intel)
{
struct i830_context *i830 = i830_context(&intel->ctx);
bool ok = true;
GLuint i;
for (i = 0; i < I830_TEX_UNITS && ok; i++) {
switch (intel->ctx.Texture.Unit[i]._ReallyEnabled) {
case TEXTURE_1D_BIT:
case TEXTURE_2D_BIT:
case TEXTURE_CUBE_BIT:
ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_NORMAL);
break;
case TEXTURE_RECT_BIT:
ok = i830_update_tex_unit(intel, i, TEXCOORDS_ARE_IN_TEXELUNITS);
break;
case 0:{
struct i830_context *i830 = i830_context(&intel->ctx);
if (i830->state.active & I830_UPLOAD_TEX(i))
I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(i), false);
if (i830->state.tex_buffer[i] != NULL) {
drm_intel_bo_unreference(i830->state.tex_buffer[i]);
i830->state.tex_buffer[i] = NULL;
}
break;
}
case TEXTURE_3D_BIT:
default:
ok = false;
break;
}
}
FALLBACK(intel, I830_FALLBACK_TEXTURE, !ok);
if (ok)
i830EmitTextureBlend(i830);
}