diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/gamma/gamma_texstate.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/dri/gamma/gamma_texstate.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/gamma/gamma_texstate.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/gamma/gamma_texstate.c new file mode 100644 index 000000000..a8d1b253c --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/gamma/gamma_texstate.c @@ -0,0 +1,216 @@ +/* $XFree86: xc/lib/GL/mesa/src/drv/gamma/gamma_texstate.c,v 1.5 2002/11/05 17:46:07 tsi Exp $ */ + +#include <stdlib.h> +#include <stdio.h> + +#include "glheader.h" +#include "macros.h" +#include "mtypes.h" +#include "simple_list.h" +#include "enums.h" + +#include "mm.h" +#include "gamma_context.h" + +static void gammaSetTexImages( gammaContextPtr gmesa, + struct gl_texture_object *tObj ) +{ + GLuint height, width, pitch, i, log_pitch; + gammaTextureObjectPtr t = (gammaTextureObjectPtr) tObj->DriverData; + const struct gl_texture_image *baseImage = tObj->Image[0][tObj->BaseLevel]; + GLint firstLevel, lastLevel, numLevels; + GLint log2Width, log2Height; + + /* fprintf(stderr, "%s\n", __FUNCTION__); */ + + t->texelBytes = 2; + + /* Compute which mipmap levels we really want to send to the hardware. + * This depends on the base image size, GL_TEXTURE_MIN_LOD, + * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL. + * Yes, this looks overly complicated, but it's all needed. + */ + if (tObj->MinFilter == GL_LINEAR || tObj->MinFilter == GL_NEAREST) { + firstLevel = lastLevel = tObj->BaseLevel; + } + else { + firstLevel = tObj->BaseLevel + (GLint) (tObj->MinLod + 0.5); + firstLevel = MAX2(firstLevel, tObj->BaseLevel); + lastLevel = tObj->BaseLevel + (GLint) (tObj->MaxLod + 0.5); + lastLevel = MAX2(lastLevel, tObj->BaseLevel); + lastLevel = MIN2(lastLevel, tObj->BaseLevel + baseImage->MaxLog2); + lastLevel = MIN2(lastLevel, tObj->MaxLevel); + lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */ + } + + /* save these values */ + t->firstLevel = firstLevel; + t->lastLevel = lastLevel; + + numLevels = lastLevel - firstLevel + 1; + + log2Width = tObj->Image[0][firstLevel]->WidthLog2; + log2Height = tObj->Image[0][firstLevel]->HeightLog2; + + + /* Figure out the amount of memory required to hold all the mipmap + * levels. Choose the smallest pitch to accomodate the largest + * mipmap: + */ + width = tObj->Image[0][firstLevel]->Width * t->texelBytes; + for (pitch = 32, log_pitch=2 ; pitch < width ; pitch *= 2 ) + log_pitch++; + + /* All images must be loaded at this pitch. Count the number of + * lines required: + */ + for ( height = i = 0 ; i < numLevels ; i++ ) { + t->image[i].image = tObj->Image[0][firstLevel + i]; + t->image[i].offset = height * pitch; + t->image[i].internalFormat = baseImage->Format; + height += t->image[i].image->Height; + t->TextureBaseAddr[i] = /* ??? */ + (unsigned long)(t->image[i].offset + t->BufAddr) << 5; + + } + + t->Pitch = pitch; + t->totalSize = height*pitch; + t->max_level = i-1; + gmesa->dirty |= GAMMA_UPLOAD_TEX0 /* | GAMMA_UPLOAD_TEX1*/; + + gammaUploadTexImages( gmesa, t ); +} + +static void gammaUpdateTexEnv( GLcontext *ctx, GLuint unit ) +{ + const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; + const struct gl_texture_object *tObj = texUnit->_Current; + const GLuint format = tObj->Image[0][tObj->BaseLevel]->Format; + gammaTextureObjectPtr t = (gammaTextureObjectPtr)tObj->DriverData; + GLuint tc; + + /* fprintf(stderr, "%s\n", __FUNCTION__); */ + + tc = t->TextureColorMode & ~(TCM_BaseFormatMask | TCM_ApplicationMask); + + switch (format) { + case GL_RGB: + tc |= TCM_BaseFormat_RGB; + break; + case GL_LUMINANCE: + tc |= TCM_BaseFormat_Lum; + break; + case GL_ALPHA: + tc |= TCM_BaseFormat_Alpha; + break; + case GL_LUMINANCE_ALPHA: + tc |= TCM_BaseFormat_LumAlpha; + break; + case GL_INTENSITY: + tc |= TCM_BaseFormat_Intensity; + break; + case GL_RGBA: + tc |= TCM_BaseFormat_RGBA; + break; + case GL_COLOR_INDEX: + break; + } + + switch (texUnit->EnvMode) { + case GL_REPLACE: + tc |= TCM_Replace; + break; + case GL_MODULATE: + tc |= TCM_Modulate; + break; + case GL_ADD: + /* do nothing ???*/ + break; + case GL_DECAL: + tc |= TCM_Decal; + break; + case GL_BLEND: + tc |= TCM_Blend; + break; + default: + fprintf(stderr, "unknown tex env mode"); + return; + } + + t->TextureColorMode = tc; +} + + + + +static void gammaUpdateTexUnit( GLcontext *ctx, GLuint unit ) +{ + gammaContextPtr gmesa = GAMMA_CONTEXT(ctx); + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; + + /* fprintf(stderr, "%s\n", __FUNCTION__); */ + + if (texUnit->_ReallyEnabled == TEXTURE_2D_BIT) + { + struct gl_texture_object *tObj = texUnit->_Current; + gammaTextureObjectPtr t = (gammaTextureObjectPtr)tObj->DriverData; + + /* Upload teximages (not pipelined) + */ + if (t->dirty_images) { + gammaSetTexImages( gmesa, tObj ); + if (!t->MemBlock) { + FALLBACK( gmesa, GAMMA_FALLBACK_TEXTURE, GL_TRUE ); + return; + } + } + +#if 0 + if (tObj->Image[0][tObj->BaseLevel]->Border > 0) { + FALLBACK( gmesa, GAMMA_FALLBACK_TEXTURE, GL_TRUE ); + return; + } +#endif + + /* Update state if this is a different texture object to last + * time. + */ + if (gmesa->CurrentTexObj[unit] != t) { + gmesa->dirty |= GAMMA_UPLOAD_TEX0 /* << unit */; + gmesa->CurrentTexObj[unit] = t; + gammaUpdateTexLRU( gmesa, t ); /* done too often */ + } + + /* Update texture environment if texture object image format or + * texture environment state has changed. + */ + if (tObj->Image[0][tObj->BaseLevel]->Format != gmesa->TexEnvImageFmt[unit]) { + gmesa->TexEnvImageFmt[unit] = tObj->Image[0][tObj->BaseLevel]->Format; + gammaUpdateTexEnv( ctx, unit ); + } + } + else if (texUnit->_ReallyEnabled) { + FALLBACK( gmesa, GAMMA_FALLBACK_TEXTURE, GL_TRUE ); + } + else /*if (gmesa->CurrentTexObj[unit])*/ { + gmesa->CurrentTexObj[unit] = 0; + gmesa->TexEnvImageFmt[unit] = 0; + gmesa->dirty &= ~(GAMMA_UPLOAD_TEX0<<unit); + } +} + + +void gammaUpdateTextureState( GLcontext *ctx ) +{ + gammaContextPtr gmesa = GAMMA_CONTEXT(ctx); + /* fprintf(stderr, "%s\n", __FUNCTION__); */ + FALLBACK( gmesa, GAMMA_FALLBACK_TEXTURE, GL_FALSE ); + gammaUpdateTexUnit( ctx, 0 ); +#if 0 + gammaUpdateTexUnit( ctx, 1 ); +#endif +} + + + |