From 68da4b50e9b6aa72a9b155f650952620063e1b94 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Sun, 23 Oct 2011 10:44:47 -0600 Subject: mesa: add swrast_texture_image::Buffer In the past, swrast_texture_image::Data has been overloaded. It could either point to malloc'd memory storing texture data, or it could point to a current mapping of GPU memory. Now, Buffer always points to malloc'd memory (if we're not using GPU memory) and Data always points to mapped memory. The next step would be to rename Data -> Map. This change also involves adding swrast functions for mapping textures and renderbuffers prior to rendering to setup the Data pointer. Plus, corresponding functions to unmap texures and renderbuffers. This is very much like similar code in the dri drivers. --- src/mesa/swrast/s_texture.c | 151 +++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 143 insertions(+), 8 deletions(-) (limited to 'src/mesa/swrast/s_texture.c') diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c index df371c30e3c..80c3070c941 100644 --- a/src/mesa/swrast/s_texture.c +++ b/src/mesa/swrast/s_texture.c @@ -76,9 +76,9 @@ _swrast_alloc_texture_image_buffer(struct gl_context *ctx, assert(texImage->Height == height); assert(texImage->Depth == depth); - assert(!swImg->Data); - swImg->Data = _mesa_align_malloc(bytes, 512); - if (!swImg->Data) + assert(!swImg->Buffer); + swImg->Buffer = _mesa_align_malloc(bytes, 512); + if (!swImg->Buffer) return GL_FALSE; /* RowStride and ImageOffsets[] describe how to address texels in 'Data' */ @@ -128,9 +128,9 @@ _swrast_free_texture_image_buffer(struct gl_context *ctx, struct gl_texture_image *texImage) { struct swrast_texture_image *swImage = swrast_texture_image(texImage); - if (swImage->Data) { - _mesa_align_free(swImage->Data); - swImage->Data = NULL; + if (swImage->Buffer) { + _mesa_align_free(swImage->Buffer); + swImage->Buffer = NULL; } if (swImage->ImageOffsets) { @@ -189,9 +189,9 @@ _swrast_map_teximage(struct gl_context *ctx, stride = _mesa_format_row_stride(texImage->TexFormat, texImage->Width); _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh); - assert(swImage->Data); + assert(swImage->Buffer); - map = swImage->Data; + map = swImage->Buffer; if (texImage->TexObject->Target == GL_TEXTURE_3D || texImage->TexObject->Target == GL_TEXTURE_2D_ARRAY) { @@ -224,3 +224,138 @@ _swrast_unmap_teximage(struct gl_context *ctx, { /* nop */ } + + +void +_swrast_map_texture(struct gl_context *ctx, struct gl_texture_object *texObj) +{ + const GLuint faces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1; + GLuint face, level; + + for (face = 0; face < faces; face++) { + for (level = texObj->BaseLevel; level < MAX_TEXTURE_LEVELS; level++) { + struct gl_texture_image *texImage = texObj->Image[face][level]; + if (texImage) { + struct swrast_texture_image *swImage = + swrast_texture_image(texImage); + + /* XXX we'll eventually call _swrast_map_teximage() here */ + swImage->Data = swImage->Buffer; + assert(swImage->Buffer); + } + } + } +} + + +void +_swrast_unmap_texture(struct gl_context *ctx, struct gl_texture_object *texObj) +{ + const GLuint faces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1; + GLuint face, level; + + for (face = 0; face < faces; face++) { + for (level = texObj->BaseLevel; level < MAX_TEXTURE_LEVELS; level++) { + struct gl_texture_image *texImage = texObj->Image[face][level]; + if (texImage) { + struct swrast_texture_image *swImage + = swrast_texture_image(texImage); + + /* XXX we'll eventually call _swrast_unmap_teximage() here */ + swImage->Data = NULL; + } + } + } +} + + +/** + * Map all textures for reading prior to software rendering. + */ +void +_swrast_map_textures(struct gl_context *ctx) +{ + GLbitfield enabledUnits = ctx->Texture._EnabledUnits; + + /* loop over enabled texture units */ + while (enabledUnits) { + GLuint unit = ffs(enabledUnits) - 1; + struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; + + _swrast_map_texture(ctx, texObj); + + enabledUnits &= ~(1 << unit); + } +} + + +/** + * Unmap all textures for reading prior to software rendering. + */ +void +_swrast_unmap_textures(struct gl_context *ctx) +{ + GLbitfield enabledUnits = ctx->Texture._EnabledUnits; + + /* loop over enabled texture units */ + while (enabledUnits) { + GLuint unit = ffs(enabledUnits) - 1; + struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current; + + _swrast_unmap_texture(ctx, texObj); + + enabledUnits &= ~(1 << unit); + } +} + + +/** + * Map or unmap any textures that we may be rendering to as renderbuffers. + */ +static void +map_unmap_renderbuffers(struct gl_context *ctx, + struct gl_framebuffer *fb, + GLboolean map) +{ + GLuint i; + + for (i = 0; i < Elements(fb->Attachment); i++) { + struct gl_texture_object *texObj = fb->Attachment[i].Texture; + if (texObj) { + const GLuint level = fb->Attachment[i].TextureLevel; + const GLuint face = fb->Attachment[i].CubeMapFace; + struct gl_texture_image *texImage = texObj->Image[face][level]; + if (texImage) { + struct swrast_texture_image *swImage + = swrast_texture_image(texImage); + + if (map) { + /* XXX we'll eventually call _swrast_map_teximage() here */ + swImage->Data = swImage->Buffer; + } + else { + /* XXX we'll eventually call _swrast_unmap_teximage() here */ + swImage->Data = NULL; + } + } + } + } +} + + +void +_swrast_map_renderbuffers(struct gl_context *ctx) +{ + map_unmap_renderbuffers(ctx, ctx->DrawBuffer, GL_TRUE); + if (ctx->ReadBuffer != ctx->DrawBuffer) + map_unmap_renderbuffers(ctx, ctx->ReadBuffer, GL_TRUE); +} + + +void +_swrast_unmap_renderbuffers(struct gl_context *ctx) +{ + map_unmap_renderbuffers(ctx, ctx->DrawBuffer, GL_FALSE); + if (ctx->ReadBuffer != ctx->DrawBuffer) + map_unmap_renderbuffers(ctx, ctx->ReadBuffer, GL_FALSE); +} -- cgit v1.2.3