/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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
+ * IN NO EVENT SHALL VMWARE 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.
/*
* Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
* Brian Paul
*/
#include "main/macros.h"
+#include "main/mtypes.h"
+#include "main/glformats.h"
+#include "main/samplerobj.h"
+#include "main/teximage.h"
+#include "main/texobj.h"
#include "st_context.h"
#include "st_cb_texture.h"
+#include "st_format.h"
#include "st_atom.h"
+#include "st_texture.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "cso_cache/cso_context.h"
+#include "util/u_format.h"
+
/**
* Convert GLenum texcoord wrap tokens to pipe tokens.
}
-static void
-xlate_border_color(const GLfloat *colorIn, GLenum baseFormat, GLfloat *colorOut)
+/**
+ * Convert a gl_sampler_object to a pipe_sampler_state object.
+ */
+void
+st_convert_sampler(const struct st_context *st,
+ const struct gl_texture_object *texobj,
+ const struct gl_sampler_object *msamp,
+ struct pipe_sampler_state *sampler)
{
- switch (baseFormat) {
- case GL_RGB:
- colorOut[0] = colorIn[0];
- colorOut[1] = colorIn[1];
- colorOut[2] = colorIn[2];
- colorOut[3] = 1.0F;
- break;
- case GL_ALPHA:
- colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
- colorOut[3] = colorIn[3];
- break;
- case GL_LUMINANCE:
- colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
- colorOut[3] = 1.0;
- break;
- case GL_LUMINANCE_ALPHA:
- colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
- colorOut[3] = colorIn[3];
- break;
- case GL_INTENSITY:
- colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
- break;
- default:
- COPY_4V(colorOut, colorIn);
+ GLenum texBaseFormat;
+
+ texBaseFormat = _mesa_texture_base_format(texobj);
+
+ memset(sampler, 0, sizeof(*sampler));
+ sampler->wrap_s = gl_wrap_xlate(msamp->WrapS);
+ sampler->wrap_t = gl_wrap_xlate(msamp->WrapT);
+ sampler->wrap_r = gl_wrap_xlate(msamp->WrapR);
+
+ sampler->min_img_filter = gl_filter_to_img_filter(msamp->MinFilter);
+ sampler->min_mip_filter = gl_filter_to_mip_filter(msamp->MinFilter);
+ sampler->mag_img_filter = gl_filter_to_img_filter(msamp->MagFilter);
+
+ if (texobj->Target != GL_TEXTURE_RECTANGLE_ARB)
+ sampler->normalized_coords = 1;
+
+ sampler->lod_bias = msamp->LodBias;
+ /* Reduce the number of states by allowing only the values that AMD GCN
+ * can represent. Apps use lod_bias for smooth transitions to bigger mipmap
+ * levels.
+ */
+ sampler->lod_bias = CLAMP(sampler->lod_bias, -16, 16);
+ sampler->lod_bias = floorf(sampler->lod_bias * 256) / 256;
+
+ sampler->min_lod = MAX2(msamp->MinLod, 0.0f);
+ sampler->max_lod = msamp->MaxLod;
+ if (sampler->max_lod < sampler->min_lod) {
+ /* The GL spec doesn't seem to specify what to do in this case.
+ * Swap the values.
+ */
+ float tmp = sampler->max_lod;
+ sampler->max_lod = sampler->min_lod;
+ sampler->min_lod = tmp;
+ assert(sampler->min_lod <= sampler->max_lod);
}
-}
+ /* For non-black borders... */
+ if (msamp->BorderColor.ui[0] ||
+ msamp->BorderColor.ui[1] ||
+ msamp->BorderColor.ui[2] ||
+ msamp->BorderColor.ui[3]) {
+ const struct st_texture_object *stobj = st_texture_object_const(texobj);
+ const GLboolean is_integer = texobj->_IsIntegerFormat;
+ const struct pipe_sampler_view *sv = NULL;
+ union pipe_color_union border_color;
+ GLuint i;
+
+ /* Just search for the first used view. We can do this because the
+ swizzle is per-texture, not per context. */
+ /* XXX: clean that up to not use the sampler view at all */
+ for (i = 0; i < stobj->num_sampler_views; ++i) {
+ if (stobj->sampler_views[i]) {
+ sv = stobj->sampler_views[i];
+ break;
+ }
+ }
-static void
-update_samplers(struct st_context *st)
-{
- struct gl_vertex_program *vprog = st->ctx->VertexProgram._Current;
- struct gl_fragment_program *fprog = st->ctx->FragmentProgram._Current;
- const GLbitfield samplersUsed = (vprog->Base.SamplersUsed |
- fprog->Base.SamplersUsed);
- GLuint su;
+ if (st->apply_texture_swizzle_to_border_color && sv) {
+ const unsigned char swz[4] =
+ {
+ sv->swizzle_r,
+ sv->swizzle_g,
+ sv->swizzle_b,
+ sv->swizzle_a,
+ };
+
+ st_translate_color(&msamp->BorderColor,
+ &border_color,
+ texBaseFormat, is_integer);
+
+ util_format_apply_color_swizzle(&sampler->border_color,
+ &border_color, swz, is_integer);
+ } else {
+ st_translate_color(&msamp->BorderColor,
+ &sampler->border_color,
+ texBaseFormat, is_integer);
+ }
+ }
- st->state.num_samplers = 0;
+ sampler->max_anisotropy = (msamp->MaxAnisotropy == 1.0 ?
+ 0 : (GLuint) msamp->MaxAnisotropy);
- /* loop over sampler units (aka tex image units) */
- for (su = 0; su < st->ctx->Const.MaxTextureImageUnits; su++) {
- struct pipe_sampler_state *sampler = st->state.samplers + su;
+ /* If sampling a depth texture and using shadow comparison */
+ if ((texBaseFormat == GL_DEPTH_COMPONENT ||
+ (texBaseFormat == GL_DEPTH_STENCIL && !texobj->StencilSampling)) &&
+ msamp->CompareMode == GL_COMPARE_R_TO_TEXTURE) {
+ sampler->compare_mode = PIPE_TEX_COMPARE_R_TO_TEXTURE;
+ sampler->compare_func = st_compare_func_to_pipe(msamp->CompareFunc);
+ }
- memset(sampler, 0, sizeof(*sampler));
+ /* Only set the seamless cube map texture parameter because the per-context
+ * enable should be ignored and treated as disabled when using texture
+ * handles, as specified by ARB_bindless_texture.
+ */
+ sampler->seamless_cube_map = msamp->CubeMapSeamless;
+}
- if (samplersUsed & (1 << su)) {
- struct gl_texture_object *texobj;
- struct gl_texture_image *teximg;
- GLuint texUnit;
+/**
+ * Get a pipe_sampler_state object from a texture unit.
+ */
+void
+st_convert_sampler_from_unit(const struct st_context *st,
+ struct pipe_sampler_state *sampler,
+ GLuint texUnit)
+{
+ const struct gl_texture_object *texobj;
+ struct gl_context *ctx = st->ctx;
+ const struct gl_sampler_object *msamp;
- if (fprog->Base.SamplersUsed & (1 << su))
- texUnit = fprog->Base.SamplerUnits[su];
- else
- texUnit = vprog->Base.SamplerUnits[su];
+ texobj = ctx->Texture.Unit[texUnit]._Current;
+ assert(texobj);
- texobj = st->ctx->Texture.Unit[texUnit]._Current;
- if (!texobj) {
- texobj = st_get_default_texture(st);
- }
+ msamp = _mesa_get_samplerobj(ctx, texUnit);
- teximg = texobj->Image[0][texobj->BaseLevel];
-
- sampler->wrap_s = gl_wrap_xlate(texobj->WrapS);
- sampler->wrap_t = gl_wrap_xlate(texobj->WrapT);
- sampler->wrap_r = gl_wrap_xlate(texobj->WrapR);
-
- sampler->min_img_filter = gl_filter_to_img_filter(texobj->MinFilter);
- sampler->min_mip_filter = gl_filter_to_mip_filter(texobj->MinFilter);
- sampler->mag_img_filter = gl_filter_to_img_filter(texobj->MagFilter);
-
- if (texobj->Target != GL_TEXTURE_RECTANGLE_ARB)
- sampler->normalized_coords = 1;
-
- sampler->lod_bias = st->ctx->Texture.Unit[su].LodBias;
- sampler->min_lod = MAX2(0.0f, texobj->MinLod);
- sampler->max_lod = MIN2(texobj->MaxLevel - texobj->BaseLevel,
- texobj->MaxLod);
- if (sampler->max_lod < sampler->min_lod) {
- /* The GL spec doesn't seem to specify what to do in this case.
- * Swap the values.
- */
- float tmp = sampler->max_lod;
- sampler->max_lod = sampler->min_lod;
- sampler->min_lod = tmp;
- assert(sampler->min_lod <= sampler->max_lod);
- }
+ st_convert_sampler(st, texobj, msamp, sampler);
- xlate_border_color(texobj->BorderColor.f,
- teximg ? teximg->_BaseFormat : GL_RGBA,
- sampler->border_color);
+ sampler->lod_bias += ctx->Texture.Unit[texUnit].LodBias;
+ sampler->seamless_cube_map |= ctx->Texture.CubeMapSeamless;
+}
- sampler->max_anisotropy = texobj->MaxAnisotropy;
- /* only care about ARB_shadow, not SGI shadow */
- if (texobj->CompareMode == GL_COMPARE_R_TO_TEXTURE) {
- sampler->compare_mode = PIPE_TEX_COMPARE_R_TO_TEXTURE;
- sampler->compare_func
- = st_compare_func_to_pipe(texobj->CompareFunc);
- }
+/**
+ * Update the gallium driver's sampler state for fragment, vertex or
+ * geometry shader stage.
+ */
+static void
+update_shader_samplers(struct st_context *st,
+ enum pipe_shader_type shader_stage,
+ const struct gl_program *prog,
+ unsigned max_units,
+ struct pipe_sampler_state *samplers,
+ unsigned *num_samplers)
+{
+ GLbitfield samplers_used = prog->SamplersUsed;
+ GLbitfield free_slots = ~prog->SamplersUsed;
+ GLbitfield external_samplers_used = prog->ExternalSamplersUsed;
+ GLuint unit;
+ const GLuint old_max = *num_samplers;
+ const struct pipe_sampler_state *states[PIPE_MAX_SAMPLERS];
- st->state.num_samplers = su + 1;
+ if (samplers_used == 0x0)
+ return;
- /*printf("%s su=%u non-null\n", __FUNCTION__, su);*/
- cso_single_sampler(st->cso_context, su, sampler);
- if (su < st->ctx->Const.MaxVertexTextureImageUnits) {
- cso_single_vertex_sampler(st->cso_context, su, sampler);
- }
+ *num_samplers = 0;
+
+ /* loop over sampler units (aka tex image units) */
+ for (unit = 0; unit < max_units; unit++, samplers_used >>= 1) {
+ struct pipe_sampler_state *sampler = samplers + unit;
+
+ if (samplers_used & 1) {
+ const GLuint texUnit = prog->SamplerUnits[unit];
+
+ st_convert_sampler_from_unit(st, sampler, texUnit);
+ states[unit] = sampler;
+ *num_samplers = unit + 1;
+ }
+ else if (samplers_used != 0 || unit < old_max) {
+ states[unit] = NULL;
}
else {
- /*printf("%s su=%u null\n", __FUNCTION__, su);*/
- cso_single_sampler(st->cso_context, su, NULL);
- if (su < st->ctx->Const.MaxVertexTextureImageUnits) {
- cso_single_vertex_sampler(st->cso_context, su, NULL);
- }
+ /* if we've reset all the old samplers and we have no more new ones */
+ break;
+ }
+ }
+
+ /* For any external samplers with multiplaner YUV, stuff the additional
+ * sampler states we need at the end.
+ *
+ * Just re-use the existing sampler-state from the primary slot.
+ */
+ while (unlikely(external_samplers_used)) {
+ GLuint unit = u_bit_scan(&external_samplers_used);
+ GLuint extra = 0;
+ struct st_texture_object *stObj =
+ st_get_texture_object(st->ctx, prog, unit);
+ struct pipe_sampler_state *sampler = samplers + unit;
+
+ if (!stObj)
+ continue;
+
+ switch (st_get_view_format(stObj)) {
+ case PIPE_FORMAT_NV12:
+ /* we need one additional sampler: */
+ extra = u_bit_scan(&free_slots);
+ states[extra] = sampler;
+ break;
+ case PIPE_FORMAT_IYUV:
+ /* we need two additional samplers: */
+ extra = u_bit_scan(&free_slots);
+ states[extra] = sampler;
+ extra = u_bit_scan(&free_slots);
+ states[extra] = sampler;
+ break;
+ default:
+ break;
}
+
+ *num_samplers = MAX2(*num_samplers, extra + 1);
+ }
+
+ cso_set_samplers(st->cso_context, shader_stage, *num_samplers, states);
+}
+
+
+void
+st_update_vertex_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ update_shader_samplers(st,
+ PIPE_SHADER_VERTEX,
+ ctx->VertexProgram._Current,
+ ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_VERTEX],
+ &st->state.num_samplers[PIPE_SHADER_VERTEX]);
+}
+
+
+void
+st_update_tessctrl_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->TessCtrlProgram._Current) {
+ update_shader_samplers(st,
+ PIPE_SHADER_TESS_CTRL,
+ ctx->TessCtrlProgram._Current,
+ ctx->Const.Program[MESA_SHADER_TESS_CTRL].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_TESS_CTRL],
+ &st->state.num_samplers[PIPE_SHADER_TESS_CTRL]);
}
+}
+
+
+void
+st_update_tesseval_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->TessEvalProgram._Current) {
+ update_shader_samplers(st,
+ PIPE_SHADER_TESS_EVAL,
+ ctx->TessEvalProgram._Current,
+ ctx->Const.Program[MESA_SHADER_TESS_EVAL].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_TESS_EVAL],
+ &st->state.num_samplers[PIPE_SHADER_TESS_EVAL]);
+ }
+}
- cso_single_sampler_done(st->cso_context);
- if (st->ctx->Const.MaxVertexTextureImageUnits > 0) {
- cso_single_vertex_sampler_done(st->cso_context);
+
+void
+st_update_geometry_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->GeometryProgram._Current) {
+ update_shader_samplers(st,
+ PIPE_SHADER_GEOMETRY,
+ ctx->GeometryProgram._Current,
+ ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_GEOMETRY],
+ &st->state.num_samplers[PIPE_SHADER_GEOMETRY]);
}
}
-const struct st_tracked_state st_update_sampler = {
- "st_update_sampler", /* name */
- { /* dirty */
- _NEW_TEXTURE, /* mesa */
- 0, /* st */
- },
- update_samplers /* update */
-};
+void
+st_update_fragment_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ update_shader_samplers(st,
+ PIPE_SHADER_FRAGMENT,
+ ctx->FragmentProgram._Current,
+ ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_FRAGMENT],
+ &st->state.num_samplers[PIPE_SHADER_FRAGMENT]);
+}
+
+
+void
+st_update_compute_samplers(struct st_context *st)
+{
+ const struct gl_context *ctx = st->ctx;
+
+ if (ctx->ComputeProgram._Current) {
+ update_shader_samplers(st,
+ PIPE_SHADER_COMPUTE,
+ ctx->ComputeProgram._Current,
+ ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits,
+ st->state.samplers[PIPE_SHADER_COMPUTE],
+ &st->state.num_samplers[PIPE_SHADER_COMPUTE]);
+ }
+}
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