diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/i830/i830_texstate.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/dri/i830/i830_texstate.c | 716 |
1 files changed, 0 insertions, 716 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/i830/i830_texstate.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/i830/i830_texstate.c deleted file mode 100644 index 358c554f3..000000000 --- a/nx-X11/extras/Mesa/src/mesa/drivers/dri/i830/i830_texstate.c +++ /dev/null @@ -1,716 +0,0 @@ -/************************************************************************** - -Copyright 2001 2d3d Inc., Delray Beach, FL - -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 -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 -ATI, VA LINUX SYSTEMS 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. - -**************************************************************************/ - -/* $XFree86: xc/lib/GL/mesa/src/drv/i830/i830_texstate.c,v 1.3 2002/12/10 01:26:53 dawes Exp $ */ - -/** - * \file i830_texstate.c - * - * Heavily based on the I810 driver, which was written by Keith Whitwell. - * - * \author Jeff Hartmann <jhartmann@2d3d.com> - * \author Keith Whitwell <keithw@tungstengraphics.com> - */ - -#include "glheader.h" -#include "macros.h" -#include "mtypes.h" -#include "simple_list.h" -#include "enums.h" -#include "texformat.h" -#include "texstore.h" - -#include "mm.h" - -#include "i830_screen.h" -#include "i830_dri.h" - -#include "i830_context.h" -#include "i830_tex.h" -#include "i830_state.h" -#include "i830_ioctl.h" - -#define I830_TEX_UNIT_ENABLED(unit) (1<<unit) - -static void i830SetTexImages( i830ContextPtr imesa, - struct gl_texture_object *tObj ) -{ - GLuint total_height, pitch, i, textureFormat; - i830TextureObjectPtr t = (i830TextureObjectPtr) tObj->DriverData; - const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel]; - GLint numLevels; - - switch( baseImage->TexFormat->MesaFormat ) { - case MESA_FORMAT_L8: - t->texelBytes = 1; - textureFormat = MAPSURF_8BIT | MT_8BIT_L8; - break; - - case MESA_FORMAT_I8: - t->texelBytes = 1; - textureFormat = MAPSURF_8BIT | MT_8BIT_I8; - break; - - case MESA_FORMAT_AL88: - t->texelBytes = 2; - textureFormat = MAPSURF_16BIT | MT_16BIT_AY88; - break; - - case MESA_FORMAT_RGB565: - t->texelBytes = 2; - textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565; - break; - - case MESA_FORMAT_ARGB1555: - t->texelBytes = 2; - textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555; - break; - - case MESA_FORMAT_ARGB4444: - t->texelBytes = 2; - textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB4444; - break; - - case MESA_FORMAT_ARGB8888: - t->texelBytes = 4; - textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888; - break; - - case MESA_FORMAT_YCBCR_REV: - t->texelBytes = 2; - textureFormat = (MAPSURF_422 | MT_422_YCRCB_NORMAL | - TM0S1_COLORSPACE_CONVERSION); - break; - - case MESA_FORMAT_YCBCR: - t->texelBytes = 2; - textureFormat = (MAPSURF_422 | MT_422_YCRCB_SWAPY | /* ??? */ - TM0S1_COLORSPACE_CONVERSION); - break; - - case MESA_FORMAT_RGB_FXT1: - case MESA_FORMAT_RGBA_FXT1: - t->texelBytes = 2; - textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1); - break; - case MESA_FORMAT_RGBA_DXT1: - case MESA_FORMAT_RGB_DXT1: - /* - * DXTn pitches are Width/4 * blocksize in bytes - * for DXT1: blocksize=8 so Width/4*8 = Width * 2 - * for DXT3/5: blocksize=16 so Width/4*16 = Width * 4 - */ - t->texelBytes = 2; - textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1); - break; - case MESA_FORMAT_RGBA_DXT3: - t->texelBytes = 4; - textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3); - break; - case MESA_FORMAT_RGBA_DXT5: - t->texelBytes = 4; - textureFormat = (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5); - break; - default: - fprintf(stderr, "%s: bad image format\n", __FUNCTION__); - free( t ); - return; - } - - /* Compute which mipmap levels we really want to send to the hardware. - */ - - driCalculateTextureFirstLastLevel( (driTextureObject *) t ); - - - /* Figure out the amount of memory required to hold all the mipmap - * levels. Choose the smallest pitch to accomodate the largest - * mipmap: - */ - numLevels = t->base.lastLevel - t->base.firstLevel + 1; - - /* Pitch would be subject to additional rules if texture memory were - * tiled. Currently it isn't. - */ - if (0) { - pitch = 128; - while (pitch < tObj->Image[0][t->base.firstLevel]->Width * t->texelBytes) - pitch *= 2; - } - else { - pitch = tObj->Image[0][t->base.firstLevel]->Width * t->texelBytes; - pitch = (pitch + 3) & ~3; - } - - - /* All images must be loaded at this pitch. Count the number of - * lines required: - */ - for ( total_height = i = 0 ; i < numLevels ; i++ ) { - t->image[0][i].image = tObj->Image[0][t->base.firstLevel + i]; - if (!t->image[0][i].image) - break; - - t->image[0][i].offset = total_height * pitch; - if (t->image[0][i].image->IsCompressed) - { - if (t->image[0][i].image->Height > 4) - total_height += t->image[0][i].image->Height/4; - else - total_height += 1; - } - else - total_height += t->image[0][i].image->Height; - t->image[0][i].internalFormat = baseImage->Format; - } - - t->Pitch = pitch; - t->base.totalSize = total_height*pitch; - t->Setup[I830_TEXREG_TM0S1] = - (((tObj->Image[0][t->base.firstLevel]->Height - 1) << TM0S1_HEIGHT_SHIFT) | - ((tObj->Image[0][t->base.firstLevel]->Width - 1) << TM0S1_WIDTH_SHIFT) | - textureFormat); - t->Setup[I830_TEXREG_TM0S2] = - ((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT)); - t->Setup[I830_TEXREG_TM0S3] &= ~TM0S3_MAX_MIP_MASK; - t->Setup[I830_TEXREG_TM0S3] &= ~TM0S3_MIN_MIP_MASK; - t->Setup[I830_TEXREG_TM0S3] |= ((numLevels - 1)*4) << TM0S3_MIN_MIP_SHIFT; - t->dirty = I830_UPLOAD_TEX0 | I830_UPLOAD_TEX1 - | I830_UPLOAD_TEX2 | I830_UPLOAD_TEX3; - - LOCK_HARDWARE( imesa ); - i830UploadTexImagesLocked( imesa, t ); - UNLOCK_HARDWARE( imesa ); -} - -/* ================================================================ - * Texture combine functions - */ - - -/** - * Calculate the hardware instuctions to setup the current texture enviromnemt - * settings. Since \c gl_texture_unit::_CurrentCombine is used, both - * "classic" texture enviroments and GL_ARB_texture_env_combine type texture - * environments are treated identically. - * - * \todo - * This function should return \c GLboolean. When \c GL_FALSE is returned, - * it means that an environment is selected that the hardware cannot do. This - * is the way the Radeon and R200 drivers work. - * - * \todo - * Looking at i830_3d_regs.h, it seems the i830 can do part of - * GL_ATI_texture_env_combine3. It can handle using \c GL_ONE and - * \c GL_ZERO as combine inputs (which the code already supports). It can - * also handle the \c GL_MODULATE_ADD_ATI mode. Is it worth investigating - * partial support for the extension? - * - * \todo - * Some thought needs to be put into the way combiners work. The driver - * treats the hardware as if there's a specific combine unit tied to each - * texture unit. That's why there's the special case for a disabled texture - * unit. That's not the way the hardware works. In reality, there are 4 - * texture units and four general instruction slots. Each instruction slot - * can use any texture as an input. There's no need for this wierd "no-op" - * stuff. If texture units 0 and 3 are enabled, the instructions to combine - * them should be in slots 0 and 1, not 0 and 3 with two no-ops inbetween. - */ - -static void i830UpdateTexEnv( GLcontext *ctx, GLuint unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - const GLuint numColorArgs = texUnit->_CurrentCombine->_NumArgsRGB; - const GLuint numAlphaArgs = texUnit->_CurrentCombine->_NumArgsA; - - GLboolean need_constant_color = GL_FALSE; - GLuint blendop; - GLuint ablendop; - GLuint args_RGB[3]; - GLuint args_A[3]; - GLuint rgb_shift = texUnit->Combine.ScaleShiftRGB; - GLuint alpha_shift = texUnit->Combine.ScaleShiftA; - int i; - unsigned used; - static const GLuint tex_blend_rgb[3] = { - TEXPIPE_COLOR | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS, - TEXPIPE_COLOR | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS, - TEXPIPE_COLOR | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS, - }; - static const GLuint tex_blend_a[3] = { - TEXPIPE_ALPHA | TEXBLEND_ARG1 | TEXBLENDARG_MODIFY_PARMS, - TEXPIPE_ALPHA | TEXBLEND_ARG2 | TEXBLENDARG_MODIFY_PARMS, - TEXPIPE_ALPHA | TEXBLEND_ARG0 | TEXBLENDARG_MODIFY_PARMS, - }; - static const GLuint op_rgb[4] = { - 0, - TEXBLENDARG_INV_ARG, - TEXBLENDARG_REPLICATE_ALPHA, - TEXBLENDARG_REPLICATE_ALPHA | TEXBLENDARG_INV_ARG, - }; - - - - imesa->TexBlendWordsUsed[unit] = 0; - - if(I830_DEBUG&DEBUG_TEXTURE) - fprintf(stderr, "[%s:%u] env. mode = %s\n", __FUNCTION__, __LINE__, - _mesa_lookup_enum_by_nr(texUnit->EnvMode)); - - - if ( !texUnit->_ReallyEnabled ) { - imesa->TexBlend[unit][0] = (STATE3D_MAP_BLEND_OP_CMD(unit) | - TEXPIPE_COLOR | - ENABLE_TEXOUTPUT_WRT_SEL | - TEXOP_OUTPUT_CURRENT | - DISABLE_TEX_CNTRL_STAGE | - TEXOP_SCALE_1X | - TEXOP_MODIFY_PARMS | - TEXBLENDOP_ARG1); - imesa->TexBlend[unit][1] = (STATE3D_MAP_BLEND_OP_CMD(unit) | - TEXPIPE_ALPHA | - ENABLE_TEXOUTPUT_WRT_SEL | - TEXOP_OUTPUT_CURRENT | - TEXOP_SCALE_1X | - TEXOP_MODIFY_PARMS | - TEXBLENDOP_ARG1); - imesa->TexBlend[unit][2] = (STATE3D_MAP_BLEND_ARG_CMD(unit) | - TEXPIPE_COLOR | - TEXBLEND_ARG1 | - TEXBLENDARG_MODIFY_PARMS | - TEXBLENDARG_CURRENT); - imesa->TexBlend[unit][3] = (STATE3D_MAP_BLEND_ARG_CMD(unit) | - TEXPIPE_ALPHA | - TEXBLEND_ARG1 | - TEXBLENDARG_MODIFY_PARMS | - TEXBLENDARG_CURRENT); - imesa->TexBlendWordsUsed[unit] = 4; - } - else { - switch(texUnit->_CurrentCombine->ModeRGB) { - case GL_REPLACE: - blendop = TEXBLENDOP_ARG1; - break; - case GL_MODULATE: - blendop = TEXBLENDOP_MODULATE; - break; - case GL_ADD: - blendop = TEXBLENDOP_ADD; - break; - case GL_ADD_SIGNED: - blendop = TEXBLENDOP_ADDSIGNED; - break; - case GL_INTERPOLATE: - blendop = TEXBLENDOP_BLEND; - break; - case GL_SUBTRACT: - blendop = TEXBLENDOP_SUBTRACT; - break; - case GL_DOT3_RGB_EXT: - case GL_DOT3_RGBA_EXT: - /* The EXT version of the DOT3 extension does not support the - * scale factor, but the ARB version (and the version in OpenGL - * 1.3) does. - */ - rgb_shift = 0; - alpha_shift = 0; - /* FALLTHROUGH */ - - case GL_DOT3_RGB: - case GL_DOT3_RGBA: - blendop = TEXBLENDOP_DOT3; - break; - default: - return; - } - - blendop |= (rgb_shift << TEXOP_SCALE_SHIFT); - - switch(texUnit->_CurrentCombine->ModeA) { - case GL_REPLACE: - ablendop = TEXBLENDOP_ARG1; - break; - case GL_MODULATE: - ablendop = TEXBLENDOP_MODULATE; - break; - case GL_ADD: - ablendop = TEXBLENDOP_ADD; - break; - case GL_ADD_SIGNED: - ablendop = TEXBLENDOP_ADDSIGNED; - break; - case GL_INTERPOLATE: - ablendop = TEXBLENDOP_BLEND; - break; - case GL_SUBTRACT: - ablendop = TEXBLENDOP_SUBTRACT; - break; - default: - return; - } - - if ( (texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA_EXT) - || (texUnit->_CurrentCombine->ModeRGB == GL_DOT3_RGBA) ) { - ablendop = TEXBLENDOP_DOT3; - } - - ablendop |= (alpha_shift << TEXOP_SCALE_SHIFT); - - /* Handle RGB args */ - for( i = 0 ; i < numColorArgs ; i++ ) { - const int op = texUnit->_CurrentCombine->OperandRGB[i] - GL_SRC_COLOR; - - assert( (op >= 0) && (op <= 3) ); - switch(texUnit->_CurrentCombine->SourceRGB[i]) { - case GL_TEXTURE: - args_RGB[i] = TEXBLENDARG_TEXEL0 + unit; - break; - case GL_TEXTURE0: - case GL_TEXTURE1: - case GL_TEXTURE2: - case GL_TEXTURE3: - args_RGB[i] = TEXBLENDARG_TEXEL0 - + (texUnit->_CurrentCombine->SourceRGB[i] & 0x03); - break; - case GL_CONSTANT: - args_RGB[i] = TEXBLENDARG_FACTOR_N; - need_constant_color = GL_TRUE; - break; - case GL_PRIMARY_COLOR: - args_RGB[i] = TEXBLENDARG_DIFFUSE; - break; - case GL_PREVIOUS: - args_RGB[i] = TEXBLENDARG_CURRENT; - break; - case GL_ONE: - args_RGB[i] = TEXBLENDARG_ONE; - break; - case GL_ZERO: - args_RGB[i] = TEXBLENDARG_ONE | TEXBLENDARG_INV_ARG; - break; - default: - return; - } - - /* Xor is used so that GL_ONE_MINUS_SRC_COLOR with GL_ZERO - * works correctly. - */ - args_RGB[i] ^= op_rgb[op]; - } - - /* Handle A args */ - for( i = 0 ; i < numAlphaArgs ; i++ ) { - const int op = texUnit->_CurrentCombine->OperandA[i] - GL_SRC_ALPHA; - - assert( (op >= 0) && (op <= 1) ); - switch(texUnit->_CurrentCombine->SourceA[i]) { - case GL_TEXTURE: - args_A[i] = TEXBLENDARG_TEXEL0 + unit; - break; - case GL_TEXTURE0: - case GL_TEXTURE1: - case GL_TEXTURE2: - case GL_TEXTURE3: - args_A[i] = TEXBLENDARG_TEXEL0 - + (texUnit->_CurrentCombine->SourceA[i] & 0x03); - break; - case GL_CONSTANT: - args_A[i] = TEXBLENDARG_FACTOR_N; - need_constant_color = GL_TRUE; - break; - case GL_PRIMARY_COLOR: - args_A[i] = TEXBLENDARG_DIFFUSE; - break; - case GL_PREVIOUS: - args_A[i] = TEXBLENDARG_CURRENT; - break; - case GL_ONE: - args_A[i] = TEXBLENDARG_ONE; - break; - case GL_ZERO: - args_A[i] = TEXBLENDARG_ONE | TEXBLENDARG_INV_ARG; - break; - default: - return; - } - - /* We cheat. :) The register values for this are the same as for - * RGB. Xor is used so that GL_ONE_MINUS_SRC_ALPHA with GL_ZERO - * works correctly. - */ - args_A[i] ^= op_rgb[op]; - } - - /* Native Arg1 == Arg0 in GL_EXT_texture_env_combine spec */ - /* Native Arg2 == Arg1 in GL_EXT_texture_env_combine spec */ - /* Native Arg0 == Arg2 in GL_EXT_texture_env_combine spec */ - - /* Build color pipeline */ - - used = 0; - imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_OP_CMD(unit) | - TEXPIPE_COLOR | - ENABLE_TEXOUTPUT_WRT_SEL | - TEXOP_OUTPUT_CURRENT | - DISABLE_TEX_CNTRL_STAGE | - TEXOP_MODIFY_PARMS | - blendop); - - imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_OP_CMD(unit) | - TEXPIPE_ALPHA | - ENABLE_TEXOUTPUT_WRT_SEL | - TEXOP_OUTPUT_CURRENT | - TEXOP_MODIFY_PARMS | - ablendop); - - for ( i = 0 ; i < numColorArgs ; i++ ) { - imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_ARG_CMD(unit) | - tex_blend_rgb[i] | - args_RGB[i]); - } - - for ( i = 0 ; i < numAlphaArgs ; i++ ) { - imesa->TexBlend[unit][used++] = (STATE3D_MAP_BLEND_ARG_CMD(unit) | - tex_blend_a[i] | - args_A[i]); - } - - - if ( need_constant_color ) { - GLubyte r, g, b, a; - const GLfloat * const fc = texUnit->EnvColor; - - FLOAT_COLOR_TO_UBYTE_COLOR(r, fc[RCOMP]); - FLOAT_COLOR_TO_UBYTE_COLOR(g, fc[GCOMP]); - FLOAT_COLOR_TO_UBYTE_COLOR(b, fc[BCOMP]); - FLOAT_COLOR_TO_UBYTE_COLOR(a, fc[ACOMP]); - - imesa->TexBlend[unit][used++] = STATE3D_COLOR_FACTOR_CMD(unit); - imesa->TexBlend[unit][used++] = ((a << 24) | (r << 16) | (g << 8) | b); - } - - imesa->TexBlendWordsUsed[unit] = used; - } - - I830_STATECHANGE( imesa, I830_UPLOAD_TEXBLEND_N(unit) ); -} - - -/* This is bogus -- can't load the same texture object on two units. - */ -static void i830TexSetUnit( i830TextureObjectPtr t, GLuint unit ) -{ - if(I830_DEBUG&DEBUG_TEXTURE) - fprintf(stderr, "%s unit(%d)\n", __FUNCTION__, unit); - - t->Setup[I830_TEXREG_TM0LI] = (STATE3D_LOAD_STATE_IMMEDIATE_2 | - (LOAD_TEXTURE_MAP0 << unit) | 4); - - I830_SET_FIELD(t->Setup[I830_TEXREG_MCS], MAP_UNIT_MASK, MAP_UNIT(unit)); - - t->current_unit = unit; - t->base.bound |= (1U << unit); -} - -#define TEXCOORDTYPE_MASK (~((1<<13)|(1<<12)|(1<<11))) - - -static GLboolean enable_tex_common( GLcontext *ctx, GLuint unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - struct gl_texture_object *tObj = texUnit->_Current; - i830TextureObjectPtr t = (i830TextureObjectPtr)tObj->DriverData; - - /* Fallback if there's a texture border */ - if ( tObj->Image[0][tObj->BaseLevel]->Border > 0 ) { - return GL_FALSE; - } - - /* Upload teximages (not pipelined) - */ - if (t->base.dirty_images[0]) { - i830SetTexImages( imesa, tObj ); - if (!t->base.memBlock) { - return GL_FALSE; - } - } - - /* Update state if this is a different texture object to last - * time. - */ - if (imesa->CurrentTexObj[unit] != t) { - - if ( imesa->CurrentTexObj[unit] != NULL ) { - /* The old texture is no longer bound to this texture unit. - * Mark it as such. - */ - - imesa->CurrentTexObj[unit]->base.bound &= ~(1U << unit); - } - - I830_STATECHANGE( imesa, I830_UPLOAD_TEX_N(unit) ); - imesa->CurrentTexObj[unit] = t; - i830TexSetUnit(t, unit); - } - - /* Update texture environment if texture object image format or - * texture environment state has changed. - * - * KW: doesn't work -- change from tex0 only to tex0+tex1 gets - * missed (need to update last stage flag?). Call - * i830UpdateTexEnv always. - */ - if (tObj->Image[0][tObj->BaseLevel]->Format != - imesa->TexEnvImageFmt[unit]) { - imesa->TexEnvImageFmt[unit] = tObj->Image[0][tObj->BaseLevel]->Format; - } - i830UpdateTexEnv( ctx, unit ); - imesa->TexEnabledMask |= I830_TEX_UNIT_ENABLED(unit); - - return GL_TRUE; -} - -static GLboolean enable_tex_rect( GLcontext *ctx, GLuint unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - struct gl_texture_object *tObj = texUnit->_Current; - i830TextureObjectPtr t = (i830TextureObjectPtr)tObj->DriverData; - GLuint mcs = t->Setup[I830_TEXREG_MCS]; - - mcs &= ~TEXCOORDS_ARE_NORMAL; - mcs |= TEXCOORDS_ARE_IN_TEXELUNITS; - - if (mcs != t->Setup[I830_TEXREG_MCS]) { - I830_STATECHANGE( imesa, I830_UPLOAD_TEX_N(unit) ); - t->Setup[I830_TEXREG_MCS] = mcs; - } - - return GL_TRUE; -} - - -static GLboolean enable_tex_2d( GLcontext *ctx, GLuint unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - struct gl_texture_object *tObj = texUnit->_Current; - i830TextureObjectPtr t = (i830TextureObjectPtr)tObj->DriverData; - GLuint mcs = t->Setup[I830_TEXREG_MCS]; - - mcs &= ~TEXCOORDS_ARE_IN_TEXELUNITS; - mcs |= TEXCOORDS_ARE_NORMAL; - - if (mcs != t->Setup[I830_TEXREG_MCS]) { - I830_STATECHANGE( imesa, I830_UPLOAD_TEX_N(unit) ); - t->Setup[I830_TEXREG_MCS] = mcs; - } - - return GL_TRUE; -} - - -static GLboolean disable_tex( GLcontext *ctx, int unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - - /* This is happening too often. I need to conditionally send diffuse - * state to the card. Perhaps a diffuse dirty flag of some kind. - * Will need to change this logic if more than 2 texture units are - * used. We need to only do this up to the last unit enabled, or unit - * one if nothing is enabled. - */ - - if ( imesa->CurrentTexObj[unit] != NULL ) { - /* The old texture is no longer bound to this texture unit. - * Mark it as such. - */ - - imesa->CurrentTexObj[unit]->base.bound &= ~(1U << unit); - imesa->CurrentTexObj[unit] = NULL; - } - - imesa->TexEnvImageFmt[unit] = 0; - imesa->dirty &= ~(I830_UPLOAD_TEX_N(unit)); - - i830UpdateTexEnv( ctx, unit ); - - return GL_TRUE; -} - -static GLboolean i830UpdateTexUnit( GLcontext *ctx, GLuint unit ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; - - imesa->TexEnabledMask &= ~(I830_TEX_UNIT_ENABLED(unit)); - - if (texUnit->_ReallyEnabled == TEXTURE_2D_BIT) { - return (enable_tex_common( ctx, unit ) && - enable_tex_2d( ctx, unit )); - } - else if (texUnit->_ReallyEnabled == TEXTURE_RECT_BIT) { - return (enable_tex_common( ctx, unit ) && - enable_tex_rect( ctx, unit )); - } - else if (texUnit->_ReallyEnabled) { - return GL_FALSE; - } - else { - return disable_tex( ctx, unit ); - } -} - - - -void i830UpdateTextureState( GLcontext *ctx ) -{ - i830ContextPtr imesa = I830_CONTEXT(ctx); - int i; - int last_stage = 0; - GLboolean ok; - - for ( i = 0 ; i < ctx->Const.MaxTextureUnits ; i++ ) { - if ( (ctx->Texture.Unit[i]._ReallyEnabled == TEXTURE_2D_BIT) - || (ctx->Texture.Unit[i]._ReallyEnabled == TEXTURE_RECT_BIT) ) { - last_stage = i; - } - } - - ok = GL_TRUE; - for ( i = 0 ; i <= last_stage ; i++ ) { - ok = ok && i830UpdateTexUnit( ctx, i ); - } - - FALLBACK( imesa, I830_FALLBACK_TEXTURE, !ok ); - - - /* Make sure last stage is set correctly */ - imesa->TexBlend[last_stage][0] |= TEXOP_LAST_STAGE; -} |