From 1d8fbef4f2b1bccb49b40375891b66caf5395b15 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 16 Sep 2009 20:09:05 -0600 Subject: [PATCH] mesa: meta driver functions for glCopyTex[Sub]Image() Implement in terms of glReadPixels + glTex[Sub]Image(). This will allow us to get rid of some swrast texture code. --- src/mesa/drivers/common/meta.c | 308 +++++++++++++++++++++++++++++++++ src/mesa/drivers/common/meta.h | 50 +++--- 2 files changed, 335 insertions(+), 23 deletions(-) diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 76358a481fc..aa7c73ba36a 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -67,6 +67,29 @@ #define OFFSET(FIELD) ((void *) offsetof(struct vertex, FIELD)) +/** + * Flags passed to _mesa_meta_begin(). + */ +/*@{*/ +#define META_ALL ~0x0 +#define META_ALPHA_TEST 0x1 +#define META_BLEND 0x2 /**< includes logicop */ +#define META_COLOR_MASK 0x4 +#define META_DEPTH_TEST 0x8 +#define META_FOG 0x10 +#define META_PIXEL_STORE 0x20 +#define META_PIXEL_TRANSFER 0x40 +#define META_RASTERIZATION 0x80 +#define META_SCISSOR 0x100 +#define META_SHADER 0x200 +#define META_STENCIL_TEST 0x400 +#define META_TRANSFORM 0x800 /**< modelview, projection, clip planes */ +#define META_TEXTURE 0x1000 +#define META_VERTEX 0x2000 +#define META_VIEWPORT 0x4000 +/*@}*/ + + /** * State which we may save/restore across meta ops. * XXX this may be incomplete... @@ -94,6 +117,17 @@ struct save_state /** META_PIXEL_STORE */ struct gl_pixelstore_attrib Pack, Unpack; + /** META_PIXEL_TRANSFER */ + GLfloat RedBias, RedScale; + GLfloat GreenBias, GreenScale; + GLfloat BlueBias, BlueScale; + GLfloat AlphaBias, AlphaScale; + GLfloat DepthBias, DepthScale; + GLboolean MapColorFlag; + GLboolean Convolution1DEnabled; + GLboolean Convolution2DEnabled; + GLboolean Separable2DEnabled; + /** META_RASTERIZATION */ GLenum FrontPolygonMode, BackPolygonMode; GLboolean PolygonOffset; @@ -363,6 +397,35 @@ _mesa_meta_begin(GLcontext *ctx, GLbitfield state) ctx->Unpack = ctx->DefaultPacking; } + if (state & META_PIXEL_TRANSFER) { + save->RedScale = ctx->Pixel.RedScale; + save->RedBias = ctx->Pixel.RedBias; + save->GreenScale = ctx->Pixel.GreenScale; + save->GreenBias = ctx->Pixel.GreenBias; + save->BlueScale = ctx->Pixel.BlueScale; + save->BlueBias = ctx->Pixel.BlueBias; + save->AlphaScale = ctx->Pixel.AlphaScale; + save->AlphaBias = ctx->Pixel.AlphaBias; + save->MapColorFlag = ctx->Pixel.MapColorFlag; + save->Convolution1DEnabled = ctx->Pixel.Convolution1DEnabled; + save->Convolution2DEnabled = ctx->Pixel.Convolution2DEnabled; + save->Separable2DEnabled = ctx->Pixel.Separable2DEnabled; + ctx->Pixel.RedScale = 1.0F; + ctx->Pixel.RedBias = 0.0F; + ctx->Pixel.GreenScale = 1.0F; + ctx->Pixel.GreenBias = 0.0F; + ctx->Pixel.BlueScale = 1.0F; + ctx->Pixel.BlueBias = 0.0F; + ctx->Pixel.AlphaScale = 1.0F; + ctx->Pixel.AlphaBias = 0.0F; + ctx->Pixel.MapColorFlag = GL_FALSE; + ctx->Pixel.Convolution1DEnabled = GL_FALSE; + ctx->Pixel.Convolution2DEnabled = GL_FALSE; + ctx->Pixel.Separable2DEnabled = GL_FALSE; + /* XXX more state */ + ctx->NewState |=_NEW_PIXEL; + } + if (state & META_RASTERIZATION) { save->FrontPolygonMode = ctx->Polygon.FrontMode; save->BackPolygonMode = ctx->Polygon.BackMode; @@ -558,6 +621,23 @@ _mesa_meta_end(GLcontext *ctx) ctx->Unpack = save->Unpack; } + if (state & META_PIXEL_TRANSFER) { + ctx->Pixel.RedScale = save->RedScale; + ctx->Pixel.RedBias = save->RedBias; + ctx->Pixel.GreenScale = save->GreenScale; + ctx->Pixel.GreenBias = save->GreenBias; + ctx->Pixel.BlueScale = save->BlueScale; + ctx->Pixel.BlueBias = save->BlueBias; + ctx->Pixel.AlphaScale = save->AlphaScale; + ctx->Pixel.AlphaBias = save->AlphaBias; + ctx->Pixel.MapColorFlag = save->MapColorFlag; + ctx->Pixel.Convolution1DEnabled = save->Convolution1DEnabled; + ctx->Pixel.Convolution2DEnabled = save->Convolution2DEnabled; + ctx->Pixel.Separable2DEnabled = save->Separable2DEnabled; + /* XXX more state */ + ctx->NewState |=_NEW_PIXEL; + } + if (state & META_RASTERIZATION) { _mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode); _mesa_PolygonMode(GL_BACK, save->BackPolygonMode); @@ -2031,3 +2111,231 @@ _mesa_meta_generate_mipmap(GLcontext *ctx, GLenum target, /* restore (XXX add to meta_begin/end()? */ _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboSave); } + + +/** + * Determine the GL data type to use for the temporary image read with + * ReadPixels() and passed to Tex[Sub]Image(). + */ +static GLenum +get_temp_image_type(GLcontext *ctx, GLenum baseFormat) +{ + switch (baseFormat) { + case GL_RGBA: + case GL_RGB: + case GL_ALPHA: + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_INTENSITY: + if (ctx->DrawBuffer->Visual.redBits <= 8) + return GL_UNSIGNED_BYTE; + else if (ctx->DrawBuffer->Visual.redBits <= 8) + return GL_UNSIGNED_SHORT; + else + return GL_FLOAT; + case GL_DEPTH_COMPONENT: + return GL_UNSIGNED_INT; + case GL_DEPTH_STENCIL: + return GL_UNSIGNED_INT_24_8; + default: + _mesa_problem(ctx, "Unexpected format in get_temp_image_type()"); + return 0; + } +} + + +/** + * Helper for _mesa_meta_CopyTexImage1/2D() functions. + * Have to be careful with locking and meta state for pixel transfer. + */ +static void +copy_tex_image(GLcontext *ctx, GLuint dims, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLsizei height, GLint border) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum format, type; + GLint bpp; + void *buf; + + texUnit = _mesa_get_current_tex_unit(ctx); + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_get_tex_image(ctx, texObj, target, level); + + format = _mesa_base_tex_format(ctx, internalFormat); + type = get_temp_image_type(ctx, format); + bpp = _mesa_bytes_per_pixel(format, type); + if (bpp <= 0) { + _mesa_problem(ctx, "Bad bpp in meta copy_tex_image()"); + return; + } + + /* + * Alloc image buffer (XXX could use a PBO) + */ + buf = _mesa_malloc(width * height * bpp); + if (!buf) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims); + return; + } + + _mesa_unlock_texture(ctx, texObj); /* need to unlock first */ + + /* + * Read image from framebuffer (disable pixel transfer ops) + */ + _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER); + ctx->Driver.ReadPixels(ctx, x, y, width, height, + format, type, &ctx->Pack, buf); + _mesa_meta_end(ctx); + + /* + * Store texture data (with pixel transfer ops) + */ + _mesa_meta_begin(ctx, META_PIXEL_STORE); + if (target == GL_TEXTURE_1D) { + ctx->Driver.TexImage1D(ctx, target, level, internalFormat, + width, border, format, type, + buf, &ctx->Unpack, texObj, texImage); + } + else { + ctx->Driver.TexImage2D(ctx, target, level, internalFormat, + width, height, border, format, type, + buf, &ctx->Unpack, texObj, texImage); + } + _mesa_meta_end(ctx); + + _mesa_lock_texture(ctx, texObj); /* re-lock */ + + _mesa_free(buf); +} + + +void +_mesa_meta_CopyTexImage1D(GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLint border) +{ + copy_tex_image(ctx, 1, target, level, internalFormat, x, y, + width, 1, border); +} + + +void +_mesa_meta_CopyTexImage2D(GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLsizei height, GLint border) +{ + copy_tex_image(ctx, 2, target, level, internalFormat, x, y, + width, height, border); +} + + + +/** + * Helper for _mesa_meta_CopyTexSubImage1/2/3D() functions. + * Have to be careful with locking and meta state for pixel transfer. + */ +static void +copy_tex_sub_image(GLcontext *ctx, GLuint dims, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, + GLsizei width, GLsizei height) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + struct gl_texture_image *texImage; + GLenum format, type; + GLint bpp; + void *buf; + + texUnit = _mesa_get_current_tex_unit(ctx); + texObj = _mesa_select_tex_object(ctx, texUnit, target); + texImage = _mesa_select_tex_image(ctx, texObj, target, level); + + format = texImage->TexFormat->BaseFormat; + type = get_temp_image_type(ctx, format); + bpp = _mesa_bytes_per_pixel(format, type); + if (bpp <= 0) { + _mesa_problem(ctx, "Bad bpp in meta copy_tex_sub_image()"); + return; + } + + /* + * Alloc image buffer (XXX could use a PBO) + */ + buf = _mesa_malloc(width * height * bpp); + if (!buf) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexSubImage%uD", dims); + return; + } + + _mesa_unlock_texture(ctx, texObj); /* need to unlock first */ + + /* + * Read image from framebuffer (disable pixel transfer ops) + */ + _mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER); + ctx->Driver.ReadPixels(ctx, x, y, width, height, + format, type, &ctx->Pack, buf); + _mesa_meta_end(ctx); + + /* + * Store texture data (with pixel transfer ops) + */ + _mesa_meta_begin(ctx, META_PIXEL_STORE); + if (target == GL_TEXTURE_1D) { + ctx->Driver.TexSubImage1D(ctx, target, level, xoffset, + width, format, type, buf, + &ctx->Unpack, texObj, texImage); + } + else if (target == GL_TEXTURE_3D) { + ctx->Driver.TexSubImage3D(ctx, target, level, xoffset, yoffset, zoffset, + width, height, 1, format, type, buf, + &ctx->Unpack, texObj, texImage); + } + else { + ctx->Driver.TexSubImage2D(ctx, target, level, xoffset, yoffset, + width, height, format, type, buf, + &ctx->Unpack, texObj, texImage); + } + _mesa_meta_end(ctx); + + _mesa_lock_texture(ctx, texObj); /* re-lock */ + + _mesa_free(buf); +} + + +void +_mesa_meta_CopyTexSubImage1D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, + GLint x, GLint y, GLsizei width) +{ + copy_tex_sub_image(ctx, 1, target, level, xoffset, 0, 0, + x, y, width, 1); +} + + +void +_mesa_meta_CopyTexSubImage2D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint x, GLint y, + GLsizei width, GLsizei height) +{ + copy_tex_sub_image(ctx, 2, target, level, xoffset, yoffset, 0, + x, y, width, height); +} + + +void +_mesa_meta_CopyTexSubImage3D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, + GLsizei width, GLsizei height) +{ + copy_tex_sub_image(ctx, 3, target, level, xoffset, yoffset, zoffset, + x, y, width, height); +} diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h index 171ad27f265..9f7100f09c1 100644 --- a/src/mesa/drivers/common/meta.h +++ b/src/mesa/drivers/common/meta.h @@ -27,29 +27,6 @@ #define META_H -/** - * Flags passed to _mesa_meta_begin(). - * XXX these flags may evolve... - */ -/*@{*/ -#define META_ALPHA_TEST 0x1 -#define META_BLEND 0x2 /**< includes logicop */ -#define META_COLOR_MASK 0x4 -#define META_DEPTH_TEST 0x8 -#define META_FOG 0x10 -#define META_RASTERIZATION 0x20 -#define META_SCISSOR 0x40 -#define META_SHADER 0x80 -#define META_STENCIL_TEST 0x100 -#define META_TRANSFORM 0x200 /**< modelview, projection */ -#define META_TEXTURE 0x400 -#define META_VERTEX 0x800 -#define META_VIEWPORT 0x1000 -#define META_PIXEL_STORE 0x2000 -#define META_ALL ~0x0 -/*@}*/ - - extern void _mesa_meta_init(GLcontext *ctx); @@ -87,5 +64,32 @@ extern void _mesa_meta_generate_mipmap(GLcontext *ctx, GLenum target, struct gl_texture_object *texObj); +extern void +_mesa_meta_CopyTexImage1D(GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLint border); + +extern void +_mesa_meta_CopyTexImage2D(GLcontext *ctx, GLenum target, GLint level, + GLenum internalFormat, GLint x, GLint y, + GLsizei width, GLsizei height, GLint border); + +extern void +_mesa_meta_CopyTexSubImage1D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, + GLint x, GLint y, GLsizei width); + +extern void +_mesa_meta_CopyTexSubImage2D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, + GLint x, GLint y, + GLsizei width, GLsizei height); + +extern void +_mesa_meta_CopyTexSubImage3D(GLcontext *ctx, GLenum target, GLint level, + GLint xoffset, GLint yoffset, GLint zoffset, + GLint x, GLint y, + GLsizei width, GLsizei height); + #endif /* META_H */ -- 2.30.2