diff options
| -rw-r--r-- | src/mesa/drivers/common/meta.c | 56 |
1 files changed, 35 insertions, 21 deletions
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 1010d6a683..8d60f69634 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -200,6 +200,7 @@ struct temp_texture { GLuint TexObj; GLenum Target; /**< GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE */ + GLsizei MinSize; /**< Min texture size to allocate */ GLsizei MaxSize; /**< Max possible texture size */ GLboolean NPOT; /**< Non-power of two size OK? */ GLsizei Width, Height; /**< Current texture size */ @@ -719,6 +720,33 @@ _mesa_meta_end(GLcontext *ctx) /** + * One-time init for a temp_texture object. + * Choose tex target, compute max tex size, etc. + */ +static void +init_temp_texture(GLcontext *ctx, struct temp_texture *tex) +{ + /* prefer texture rectangle */ + if (ctx->Extensions.NV_texture_rectangle) { + tex->Target = GL_TEXTURE_RECTANGLE; + tex->MaxSize = ctx->Const.MaxTextureRectSize; + tex->NPOT = GL_TRUE; + } + else { + /* use 2D texture, NPOT if possible */ + tex->Target = GL_TEXTURE_2D; + tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1); + tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two; + } + tex->MinSize = 16; /* 16 x 16 at least */ + assert(tex->MaxSize > 0); + + _mesa_GenTextures(1, &tex->TexObj); + _mesa_BindTexture(tex->Target, tex->TexObj); +} + + +/** * Return pointer to temp_texture info. This does some one-time init * if needed. */ @@ -728,24 +756,7 @@ get_temp_texture(GLcontext *ctx) struct temp_texture *tex = &ctx->Meta->TempTex; if (!tex->TexObj) { - /* do one-time init */ - - /* prefer texture rectangle */ - if (ctx->Extensions.NV_texture_rectangle) { - tex->Target = GL_TEXTURE_RECTANGLE; - tex->MaxSize = ctx->Const.MaxTextureRectSize; - tex->NPOT = GL_TRUE; - } - else { - /* use 2D texture, NPOT if possible */ - tex->Target = GL_TEXTURE_2D; - tex->MaxSize = 1 << (ctx->Const.MaxTextureLevels - 1); - tex->NPOT = ctx->Extensions.ARB_texture_non_power_of_two; - } - assert(tex->MaxSize > 0); - - _mesa_GenTextures(1, &tex->TexObj); - _mesa_BindTexture(tex->Target, tex->TexObj); + init_temp_texture(ctx, tex); } return tex; @@ -767,6 +778,9 @@ alloc_texture(struct temp_texture *tex, { GLboolean newTex = GL_FALSE; + ASSERT(width <= tex->MaxSize); + ASSERT(height <= tex->MaxSize); + if (width > tex->Width || height > tex->Height || intFormat != tex->IntFormat) { @@ -774,13 +788,13 @@ alloc_texture(struct temp_texture *tex, if (tex->NPOT) { /* use non-power of two size */ - tex->Width = MIN2(64, width); - tex->Height = MIN2(64, height); + tex->Width = MAX2(tex->MinSize, width); + tex->Height = MAX2(tex->MinSize, height); } else { /* find power of two size */ GLsizei w, h; - w = h = 16; + w = h = tex->MinSize; while (w < width) w *= 2; while (h < height) |