+++ /dev/null
-/*
- * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
- * Copyright © 2009 Intel Corporation
- *
- * 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, sublicense,
- * 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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:
- * Eric Anholt <eric@anholt.net>
- *
- */
-
-#include "main/glheader.h"
-#include "main/enums.h"
-#include "main/image.h"
-#include "main/mtypes.h"
-#include "main/macros.h"
-#include "main/bufferobj.h"
-#include "main/teximage.h"
-#include "main/texenv.h"
-#include "main/texobj.h"
-#include "main/texstate.h"
-#include "main/texparam.h"
-#include "main/varray.h"
-#include "main/attrib.h"
-#include "main/enable.h"
-#include "main/buffers.h"
-#include "main/fbobject.h"
-#include "main/framebuffer.h"
-#include "main/renderbuffer.h"
-#include "main/depth.h"
-#include "main/hash.h"
-#include "main/mipmap.h"
-#include "main/blend.h"
-#include "glapi/dispatch.h"
-#include "swrast/swrast.h"
-
-#include "intel_screen.h"
-#include "intel_context.h"
-#include "intel_batchbuffer.h"
-#include "intel_pixel.h"
-#include "intel_tex.h"
-#include "intel_mipmap_tree.h"
-
-static const char *intel_fp_tex2d =
- "!!ARBfp1.0\n"
- "TEX result.color, fragment.texcoord[0], texture[0], 2D;\n"
- "END\n";
-
-static GLboolean
-intel_generate_mipmap_level(GLcontext *ctx, GLuint tex_name,
- int level, int width, int height)
-{
- struct intel_context *intel = intel_context(ctx);
- GLfloat vertices[4][2];
- GLint status;
-
- /* Set to source from the previous level */
- _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, level - 1);
- _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, level - 1);
-
- /* Set to draw into the current level */
- _mesa_FramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
- GL_COLOR_ATTACHMENT0_EXT,
- GL_TEXTURE_2D,
- tex_name,
- level);
- /* Choose to render to the color attachment. */
- _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
-
- status = _mesa_CheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
- if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
- return GL_FALSE;
-
- meta_set_passthrough_transform(&intel->meta);
-
- /* XXX: Doing it right would involve setting up the transformation to do
- * 0-1 mapping or something, and not changing the vertex data.
- */
- vertices[0][0] = 0;
- vertices[0][1] = 0;
- vertices[1][0] = width;
- vertices[1][1] = 0;
- vertices[2][0] = width;
- vertices[2][1] = height;
- vertices[3][0] = 0;
- vertices[3][1] = height;
-
- _mesa_VertexPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &vertices);
- _mesa_Enable(GL_VERTEX_ARRAY);
- meta_set_default_texrect(&intel->meta);
-
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
- meta_restore_texcoords(&intel->meta);
- meta_restore_transform(&intel->meta);
-
- return GL_TRUE;
-}
-
-static GLboolean
-intel_generate_mipmap_2d(GLcontext *ctx,
- GLenum target,
- struct gl_texture_object *texObj)
-{
- struct intel_context *intel = intel_context(ctx);
- GLint old_active_texture;
- int level, max_levels, start_level, end_level;
- GLuint fb_name;
- GLboolean success = GL_FALSE;
- struct gl_framebuffer *saved_fbo = NULL;
- struct gl_buffer_object *saved_array_buffer = NULL;
- struct gl_buffer_object *saved_element_buffer = NULL;
-
- _mesa_PushAttrib(GL_ENABLE_BIT | GL_TEXTURE_BIT |
- GL_CURRENT_BIT | GL_COLOR_BUFFER_BIT |
- GL_DEPTH_BUFFER_BIT);
- _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
- old_active_texture = ctx->Texture.CurrentUnit;
- _mesa_reference_framebuffer(&saved_fbo, ctx->DrawBuffer);
-
- /* use default array/index buffers */
- _mesa_reference_buffer_object(ctx, &saved_array_buffer,
- ctx->Array.ArrayBufferObj);
- _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
- ctx->Shared->NullBufferObj);
- _mesa_reference_buffer_object(ctx, &saved_element_buffer,
- ctx->Array.ElementArrayBufferObj);
- _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj,
- ctx->Shared->NullBufferObj);
-
- _mesa_Disable(GL_POLYGON_STIPPLE);
- _mesa_Disable(GL_DEPTH_TEST);
- _mesa_Disable(GL_STENCIL_TEST);
- _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- _mesa_DepthMask(GL_FALSE);
-
- /* Bind the given texture to GL_TEXTURE_2D with linear filtering for our
- * minification.
- */
- _mesa_ActiveTextureARB(GL_TEXTURE0_ARB);
- _mesa_Enable(GL_TEXTURE_2D);
- _mesa_BindTexture(GL_TEXTURE_2D, texObj->Name);
- _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
- GL_LINEAR_MIPMAP_NEAREST);
- _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
- /* Bind the new renderbuffer to the color attachment point. */
- _mesa_GenFramebuffersEXT(1, &fb_name);
- _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb_name);
-
- meta_set_fragment_program(&intel->meta, &intel->meta.tex2d_fp,
- intel_fp_tex2d);
- meta_set_passthrough_vertex_program(&intel->meta);
-
- max_levels = _mesa_max_texture_levels(ctx, texObj->Target);
- start_level = texObj->BaseLevel;
- end_level = texObj->MaxLevel;
-
- /* Loop generating level+1 from level. */
- for (level = start_level; level < end_level && level < max_levels - 1; level++) {
- const struct gl_texture_image *srcImage;
- int width, height;
-
- srcImage = _mesa_select_tex_image(ctx, texObj, target, level);
- if (srcImage->Border != 0)
- goto fail;
-
- width = srcImage->Width / 2;
- if (width < 1)
- width = 1;
- height = srcImage->Height / 2;
- if (height < 1)
- height = 1;
-
- if (width == srcImage->Width &&
- height == srcImage->Height) {
- /* Neither _mesa_max_texture_levels nor texObj->MaxLevel are the
- * maximum texture level for the object, so break out when we've gone
- * over the edge.
- */
- break;
- }
-
- /* Make sure that there's space allocated for the target level.
- * We could skip this if there's already space allocated and save some
- * time.
- */
- _mesa_TexImage2D(GL_TEXTURE_2D, level + 1, srcImage->InternalFormat,
- width, height, 0,
- GL_RGBA, GL_UNSIGNED_INT, NULL);
-
- if (!intel_generate_mipmap_level(ctx, texObj->Name, level + 1,
- width, height))
- goto fail;
- }
-
- success = GL_TRUE;
-
-fail:
- meta_restore_fragment_program(&intel->meta);
- meta_restore_vertex_program(&intel->meta);
-
- /* restore array/index buffers */
- _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
- saved_array_buffer);
- _mesa_reference_buffer_object(ctx, &saved_array_buffer, NULL);
- _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj,
- saved_element_buffer);
- _mesa_reference_buffer_object(ctx, &saved_element_buffer, NULL);
-
-
- _mesa_DeleteFramebuffersEXT(1, &fb_name);
- _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + old_active_texture);
- if (saved_fbo)
- _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, saved_fbo->Name);
- _mesa_reference_framebuffer(&saved_fbo, NULL);
- _mesa_PopClientAttrib();
- _mesa_PopAttrib();
-
- return success;
-}
-
-
-/**
- * Generate new mipmap data from BASE+1 to BASE+p (the minimally-sized mipmap
- * level).
- *
- * The texture object's miptree must be mapped.
- *
- * This function should also include an accelerated path.
- */
-void
-intel_generate_mipmap(GLcontext *ctx, GLenum target,
- struct gl_texture_object *texObj)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_texture_object *intelObj = intel_texture_object(texObj);
- GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
- int face, i;
-
- /* HW path */
- if (target == GL_TEXTURE_2D &&
- ctx->Extensions.EXT_framebuffer_object &&
- ctx->Extensions.ARB_fragment_program &&
- ctx->Extensions.ARB_vertex_program) {
- GLboolean success;
-
- /* We'll be accessing this texture using GL entrypoints, which should
- * be resilient against other access to this texture.
- */
- _mesa_unlock_texture(ctx, texObj);
- success = intel_generate_mipmap_2d(ctx, target, texObj);
- _mesa_lock_texture(ctx, texObj);
-
- if (success)
- return;
- }
-
- /* SW path */
- intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
- _mesa_generate_mipmap(ctx, target, texObj);
- intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
-
- /* Update the level information in our private data in the new images, since
- * it didn't get set as part of a normal TexImage path.
- */
- for (face = 0; face < nr_faces; face++) {
- for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
- struct intel_texture_image *intelImage;
-
- intelImage = intel_texture_image(texObj->Image[face][i]);
- if (intelImage == NULL)
- break;
-
- intelImage->level = i;
- intelImage->face = face;
- /* Unreference the miptree to signal that the new Data is a bare
- * pointer from mesa.
- */
- intel_miptree_release(intel, &intelImage->mt);
- }
- }
-}
projects / mesa.git / commitdiff