diff options
Diffstat (limited to 'src/mesa')
-rw-r--r-- | src/mesa/main/convolve.c | 786 | ||||
-rw-r--r-- | src/mesa/main/convolve.h | 54 |
2 files changed, 838 insertions, 2 deletions
diff --git a/src/mesa/main/convolve.c b/src/mesa/main/convolve.c index 3471220dc7..6e52706e52 100644 --- a/src/mesa/main/convolve.c +++ b/src/mesa/main/convolve.c @@ -1,4 +1,4 @@ -/* $Id: convolve.c,v 1.3 2000/08/22 18:54:25 brianp Exp $ */ +/* $Id: convolve.c,v 1.4 2000/08/23 14:31:25 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -39,10 +39,794 @@ #include "glheader.h" #include "convolve.h" #include "context.h" +#include "image.h" +#include "span.h" #include "types.h" #endif +/* + * Given an internalFormat token passed to glConvolutionFilter + * or glSeparableFilter, return the corresponding base format. + * Return -1 if invalid token. + */ +static GLint +base_filter_format( GLenum format ) +{ + switch (format) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return GL_ALPHA; + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return GL_LUMINANCE_ALPHA; + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + return GL_INTENSITY; + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return GL_RGB; + case 4: + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return GL_RGBA; + default: + return -1; /* error */ + } +} + + +void +_mesa_ConvolutionFilter1D(GLenum target, GLenum internalFormat, GLsizei width, GLenum format, GLenum type, const GLvoid *image) +{ + GLenum baseFormat; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionFilter1D"); + + if (target != GL_CONVOLUTION_1D) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(target)"); + return; + } + + baseFormat = base_filter_format(internalFormat); + if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(internalFormat)"); + return; + } + + if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { + gl_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter1D(width)"); + return; + } + + if (!_mesa_is_legal_format_and_type(format, type) || + format == GL_COLOR_INDEX || + format == GL_STENCIL_INDEX || + format == GL_DEPTH_COMPONENT || + format == GL_INTENSITY || + type == GL_BITMAP) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(format or type)"); + return; + } + + ctx->Convolution1D.Format = format; + ctx->Convolution1D.InternalFormat = internalFormat; + ctx->Convolution1D.Width = width; + ctx->Convolution1D.Height = 1; + + /* unpack filter image */ + _mesa_unpack_float_color_span(ctx, width, GL_RGBA, + ctx->Convolution1D.Filter, + format, type, image, &ctx->Unpack, + 0, GL_FALSE); + + /* apply scale and bias */ + { + const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[0]; + const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[0]; + GLint i; + for (i = 0; i < width; i++) { + GLfloat r = ctx->Convolution1D.Filter[i * 4 + 0]; + GLfloat g = ctx->Convolution1D.Filter[i * 4 + 1]; + GLfloat b = ctx->Convolution1D.Filter[i * 4 + 2]; + GLfloat a = ctx->Convolution1D.Filter[i * 4 + 3]; + r = r * scale[0] + bias[0]; + g = g * scale[1] + bias[1]; + b = b * scale[2] + bias[2]; + a = a * scale[3] + bias[3]; + ctx->Convolution1D.Filter[i * 4 + 0] = r; + ctx->Convolution1D.Filter[i * 4 + 1] = g; + ctx->Convolution1D.Filter[i * 4 + 2] = b; + ctx->Convolution1D.Filter[i * 4 + 3] = a; + } + } +} + + +void +_mesa_ConvolutionFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *image) +{ + GLenum baseFormat; + GLint i, components; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionFilter2D"); + + if (target != GL_CONVOLUTION_2D) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(target)"); + return; + } + + baseFormat = base_filter_format(internalFormat); + if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(internalFormat)"); + return; + } + + if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { + gl_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(width)"); + return; + } + if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { + gl_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(height)"); + return; + } + + if (!_mesa_is_legal_format_and_type(format, type) || + format == GL_COLOR_INDEX || + format == GL_STENCIL_INDEX || + format == GL_DEPTH_COMPONENT || + format == GL_INTENSITY || + type == GL_BITMAP) { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(format or type)"); + return; + } + + components = _mesa_components_in_format(format); + assert(components > 0); /* this should have been caught earlier */ + + ctx->Convolution2D.Format = format; + ctx->Convolution2D.InternalFormat = internalFormat; + ctx->Convolution2D.Width = width; + ctx->Convolution2D.Height = height; + + /* Unpack filter image. We always store filters in RGBA format. */ + for (i = 0; i < height; i++) { + const GLvoid *src = _mesa_image_address(&ctx->Unpack, image, width, + height, format, type, 0, i, 0); + GLfloat *dst = ctx->Convolution2D.Filter + i * width * 4; + _mesa_unpack_float_color_span(ctx, width, GL_RGBA, dst, + format, type, src, &ctx->Unpack, + 0, GL_FALSE); + } + + /* apply scale and bias */ + { + const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[1]; + const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[1]; + for (i = 0; i < width * height * 4; i++) { + GLfloat r = ctx->Convolution2D.Filter[i * 4 + 0]; + GLfloat g = ctx->Convolution2D.Filter[i * 4 + 1]; + GLfloat b = ctx->Convolution2D.Filter[i * 4 + 2]; + GLfloat a = ctx->Convolution2D.Filter[i * 4 + 3]; + r = r * scale[0] + bias[0]; + g = g * scale[1] + bias[1]; + b = b * scale[2] + bias[2]; + a = a * scale[3] + bias[3]; + ctx->Convolution2D.Filter[i * 4 + 0] = r; + ctx->Convolution2D.Filter[i * 4 + 1] = g; + ctx->Convolution2D.Filter[i * 4 + 2] = b; + ctx->Convolution2D.Filter[i * 4 + 3] = a; + } + } +} + + +void +_mesa_ConvolutionParameterf(GLenum target, GLenum pname, GLfloat param) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionParameterf"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + break; + case GL_CONVOLUTION_2D: + c = 1; + break; + case GL_SEPARABLE_2D: + c = 2; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_MODE: + if (param == (GLfloat) GL_REDUCE || + param == (GLfloat) GL_CONSTANT_BORDER || + param == (GLfloat) GL_REPLICATE_BORDER) { + ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) param; + } + else { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(params)"); + return; + } + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(pname)"); + return; + } +} + + +void +_mesa_ConvolutionParameterfv(GLenum target, GLenum pname, const GLfloat *params) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_convolution_attrib *conv; + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionParameterfv"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + conv = &ctx->Convolution1D; + break; + case GL_CONVOLUTION_2D: + c = 1; + conv = &ctx->Convolution2D; + break; + case GL_SEPARABLE_2D: + c = 2; + conv = &ctx->Separable2D; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_COLOR: + COPY_4V(ctx->Pixel.ConvolutionBorderColor[c], params); + break; + case GL_CONVOLUTION_BORDER_MODE: + if (params[0] == (GLfloat) GL_REDUCE || + params[0] == (GLfloat) GL_CONSTANT_BORDER || + params[0] == (GLfloat) GL_REPLICATE_BORDER) { + ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) params[0]; + } + else { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(params)"); + return; + } + break; + case GL_CONVOLUTION_FILTER_SCALE: + COPY_4V(ctx->Pixel.ConvolutionFilterScale[c], params); + break; + case GL_CONVOLUTION_FILTER_BIAS: + COPY_4V(ctx->Pixel.ConvolutionFilterBias[c], params); + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(pname)"); + return; + } +} + + +void +_mesa_ConvolutionParameteri(GLenum target, GLenum pname, GLint param) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionParameteri"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + break; + case GL_CONVOLUTION_2D: + c = 1; + break; + case GL_SEPARABLE_2D: + c = 2; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_MODE: + if (param == (GLint) GL_REDUCE || + param == (GLint) GL_CONSTANT_BORDER || + param == (GLint) GL_REPLICATE_BORDER) { + ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) param; + } + else { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(params)"); + return; + } + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(pname)"); + return; + } +} + + +void +_mesa_ConvolutionParameteriv(GLenum target, GLenum pname, const GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_convolution_attrib *conv; + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glConvolutionParameteriv"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + conv = &ctx->Convolution1D; + break; + case GL_CONVOLUTION_2D: + c = 1; + conv = &ctx->Convolution2D; + break; + case GL_SEPARABLE_2D: + c = 2; + conv = &ctx->Separable2D; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_COLOR: + ctx->Pixel.ConvolutionBorderColor[c][0] = INT_TO_FLOAT(params[0]); + ctx->Pixel.ConvolutionBorderColor[c][1] = INT_TO_FLOAT(params[1]); + ctx->Pixel.ConvolutionBorderColor[c][2] = INT_TO_FLOAT(params[2]); + ctx->Pixel.ConvolutionBorderColor[c][3] = INT_TO_FLOAT(params[3]); + break; + case GL_CONVOLUTION_BORDER_MODE: + if (params[0] == (GLint) GL_REDUCE || + params[0] == (GLint) GL_CONSTANT_BORDER || + params[0] == (GLint) GL_REPLICATE_BORDER) { + ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) params[0]; + } + else { + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(params)"); + return; + } + break; + case GL_CONVOLUTION_FILTER_SCALE: + COPY_4V(ctx->Pixel.ConvolutionFilterScale[c], params); + break; + case GL_CONVOLUTION_FILTER_BIAS: + COPY_4V(ctx->Pixel.ConvolutionFilterBias[c], params); + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(pname)"); + return; + } +} + + +void +_mesa_CopyConvolutionFilter1D(GLenum target, GLenum internalFormat, GLint x, GLint y, GLsizei width) +{ + GLenum baseFormat; + GLfloat rgba[MAX_CONVOLUTION_WIDTH][4]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyConvolutionFilter1D"); + + if (target != GL_CONVOLUTION_1D) { + gl_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter1D(target)"); + return; + } + + baseFormat = base_filter_format(internalFormat); + if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { + gl_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter1D(internalFormat)"); + return; + } + + if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { + gl_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter1D(width)"); + return; + } + + /* read pixels from framebuffer */ + gl_read_rgba_span(ctx, ctx->ReadBuffer, width, x, y, (GLubyte (*)[4]) rgba); + + /* store as convolution filter */ + _mesa_ConvolutionFilter1D(target, internalFormat, width, + GL_RGBA, GL_UNSIGNED_BYTE, rgba); +} + + +void +_mesa_CopyConvolutionFilter2D(GLenum target, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLsizei height) +{ + GLenum baseFormat; + GLint i; + struct gl_pixelstore_attrib packSave; + GLfloat rgba[MAX_CONVOLUTION_HEIGHT][MAX_CONVOLUTION_WIDTH][4]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCopyConvolutionFilter2D"); + + if (target != GL_CONVOLUTION_2D) { + gl_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter2D(target)"); + return; + } + + baseFormat = base_filter_format(internalFormat); + if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { + gl_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter2D(internalFormat)"); + return; + } + + if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { + gl_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter2D(width)"); + return; + } + if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { + gl_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter2D(height)"); + return; + } + + /* read pixels from framebuffer */ + for (i = 0; i < height; i++) { + gl_read_rgba_span(ctx, ctx->ReadBuffer, width, x, y + i, + (GLubyte (*)[4]) rgba[i]); + } + + /* + * store as convolution filter + */ + packSave = ctx->Unpack; /* save pixel packing params */ + + ctx->Unpack.Alignment = 1; + ctx->Unpack.RowLength = MAX_CONVOLUTION_WIDTH; + ctx->Unpack.SkipPixels = 0; + ctx->Unpack.SkipRows = 0; + ctx->Unpack.ImageHeight = 0; + ctx->Unpack.SkipImages = 0; + ctx->Unpack.SwapBytes = GL_FALSE; + ctx->Unpack.LsbFirst = GL_FALSE; + + _mesa_ConvolutionFilter2D(target, internalFormat, width, height, + GL_RGBA, GL_UNSIGNED_BYTE, rgba); + + ctx->Unpack = packSave; /* restore pixel packing params */ +} + + +void +_mesa_GetConvolutionFilter(GLenum target, GLenum format, GLenum type, GLvoid *image) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetConvolutionFilter"); + + if (target != GL_CONVOLUTION_1D && target != GL_CONVOLUTION_2D) { + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(target)"); + return; + } + + if (!_mesa_is_legal_format_and_type(format, type) || + format == GL_COLOR_INDEX || + format == GL_STENCIL_INDEX || + format == GL_DEPTH_COMPONENT || + format == GL_INTENSITY || + type == GL_BITMAP) { + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)"); + return; + } + + (void) image; + /* XXX store image */ +} + + +void +_mesa_GetConvolutionParameterfv(GLenum target, GLenum pname, GLfloat *params) +{ + GET_CURRENT_CONTEXT(ctx); + const struct gl_convolution_attrib *conv; + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetConvolutionParameterfv"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + conv = &ctx->Convolution1D; + break; + case GL_CONVOLUTION_2D: + c = 1; + conv = &ctx->Convolution2D; + break; + case GL_SEPARABLE_2D: + c = 2; + conv = &ctx->Separable2D; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameterfv(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_COLOR: + COPY_4V(params, ctx->Pixel.ConvolutionBorderColor[c]); + break; + case GL_CONVOLUTION_BORDER_MODE: + *params = (GLfloat) ctx->Pixel.ConvolutionBorderMode[c]; + break; + case GL_CONVOLUTION_FILTER_SCALE: + COPY_4V(params, ctx->Pixel.ConvolutionFilterScale[c]); + break; + case GL_CONVOLUTION_FILTER_BIAS: + COPY_4V(params, ctx->Pixel.ConvolutionFilterBias[c]); + break; + case GL_CONVOLUTION_FORMAT: + *params = (GLfloat) conv->Format; + break; + case GL_CONVOLUTION_WIDTH: + *params = (GLfloat) conv->Width; + break; + case GL_CONVOLUTION_HEIGHT: + *params = (GLfloat) conv->Height; + break; + case GL_MAX_CONVOLUTION_WIDTH: + *params = (GLfloat) ctx->Const.MaxConvolutionWidth; + break; + case GL_MAX_CONVOLUTION_HEIGHT: + *params = (GLfloat) ctx->Const.MaxConvolutionHeight; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameterfv(pname)"); + return; + } +} + + +void +_mesa_GetConvolutionParameteriv(GLenum target, GLenum pname, GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + const struct gl_convolution_attrib *conv; + GLuint c; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetConvolutionParameteriv"); + + switch (target) { + case GL_CONVOLUTION_1D: + c = 0; + conv = &ctx->Convolution1D; + break; + case GL_CONVOLUTION_2D: + c = 1; + conv = &ctx->Convolution2D; + break; + case GL_SEPARABLE_2D: + c = 2; + conv = &ctx->Separable2D; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameteriv(target)"); + return; + } + + switch (pname) { + case GL_CONVOLUTION_BORDER_COLOR: + params[0] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][0]); + params[1] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][1]); + params[2] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][2]); + params[3] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][3]); + break; + case GL_CONVOLUTION_BORDER_MODE: + *params = (GLint) ctx->Pixel.ConvolutionBorderMode[c]; + break; + case GL_CONVOLUTION_FILTER_SCALE: + params[0] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][0]; + params[1] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][1]; + params[2] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][2]; + params[3] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][3]; + break; + case GL_CONVOLUTION_FILTER_BIAS: + params[0] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][0]; + params[1] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][1]; + params[2] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][2]; + params[3] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][3]; + break; + case GL_CONVOLUTION_FORMAT: + *params = (GLint) conv->Format; + break; + case GL_CONVOLUTION_WIDTH: + *params = (GLint) conv->Width; + break; + case GL_CONVOLUTION_HEIGHT: + *params = (GLint) conv->Height; + break; + case GL_MAX_CONVOLUTION_WIDTH: + *params = (GLint) ctx->Const.MaxConvolutionWidth; + break; + case GL_MAX_CONVOLUTION_HEIGHT: + *params = (GLint) ctx->Const.MaxConvolutionHeight; + break; + default: + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameteriv(pname)"); + return; + } +} + + +void +_mesa_GetSeparableFilter(GLenum target, GLenum format, GLenum type, GLvoid *row, GLvoid *column, GLvoid *span) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glGetSeparableFilter"); + + if (target != GL_SEPARABLE_2D) { + gl_error(ctx, GL_INVALID_ENUM, "glGetSeparableFilter(target)"); + return; + } + + if (!_mesa_is_legal_format_and_type(format, type) || + format == GL_COLOR_INDEX || + format == GL_STENCIL_INDEX || + format == GL_DEPTH_COMPONENT || + format == GL_INTENSITY || + type == GL_BITMAP) { + gl_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)"); + return; + } + + /* XXX to do */ + (void) row; + (void) column; + (void) span; +} + + +void +_mesa_SeparableFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *row, const GLvoid *column) +{ + const GLint colStart = MAX_CONVOLUTION_WIDTH * 4; + GLenum baseFormat; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glSeparableFilter2D"); + + if (target != GL_SEPARABLE_2D) { + gl_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(target)"); + return; + } + + baseFormat = base_filter_format(internalFormat); + if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { + gl_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(internalFormat)"); + return; + } + + if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { + gl_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(width)"); + return; + } + if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { + gl_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(height)"); + return; + } + + if (!_mesa_is_legal_format_and_type(format, type) || + format == GL_COLOR_INDEX || + format == GL_STENCIL_INDEX || + format == GL_DEPTH_COMPONENT || + format == GL_INTENSITY || + type == GL_BITMAP) { + gl_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(format or type)"); + return; + } + + ctx->Separable2D.Format = format; + ctx->Separable2D.InternalFormat = internalFormat; + ctx->Separable2D.Width = width; + ctx->Separable2D.Height = height; + + /* unpack row filter */ + _mesa_unpack_float_color_span(ctx, width, GL_RGBA, + ctx->Separable2D.Filter, + format, type, row, &ctx->Unpack, + 0, GL_FALSE); + + /* apply scale and bias */ + { + const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[2]; + const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[2]; + GLint i; + for (i = 0; i < width; i++) { + GLfloat r = ctx->Separable2D.Filter[i * 4 + 0]; + GLfloat g = ctx->Separable2D.Filter[i * 4 + 1]; + GLfloat b = ctx->Separable2D.Filter[i * 4 + 2]; + GLfloat a = ctx->Separable2D.Filter[i * 4 + 3]; + r = r * scale[0] + bias[0]; + g = g * scale[1] + bias[1]; + b = b * scale[2] + bias[2]; + a = a * scale[3] + bias[3]; + ctx->Separable2D.Filter[i * 4 + 0] = r; + ctx->Separable2D.Filter[i * 4 + 1] = g; + ctx->Separable2D.Filter[i * 4 + 2] = b; + ctx->Separable2D.Filter[i * 4 + 3] = a; + } + } + + /* unpack column filter */ + _mesa_unpack_float_color_span(ctx, width, GL_RGBA, + &ctx->Separable2D.Filter[colStart], + format, type, column, &ctx->Unpack, + 0, GL_FALSE); + + /* apply scale and bias */ + { + const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[2]; + const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[2]; + GLint i; + for (i = 0; i < width; i++) { + GLfloat r = ctx->Separable2D.Filter[i * 4 + 0 + colStart]; + GLfloat g = ctx->Separable2D.Filter[i * 4 + 1 + colStart]; + GLfloat b = ctx->Separable2D.Filter[i * 4 + 2 + colStart]; + GLfloat a = ctx->Separable2D.Filter[i * 4 + 3 + colStart]; + r = r * scale[0] + bias[0]; + g = g * scale[1] + bias[1]; + b = b * scale[2] + bias[2]; + a = a * scale[3] + bias[3]; + ctx->Separable2D.Filter[i * 4 + 0 + colStart] = r; + ctx->Separable2D.Filter[i * 4 + 1 + colStart] = g; + ctx->Separable2D.Filter[i * 4 + 2 + colStart] = b; + ctx->Separable2D.Filter[i * 4 + 3 + colStart] = a; + } + } +} + + +/**********************************************************************/ +/*** image convolution functions ***/ +/**********************************************************************/ + static void convolve_1d_reduce(GLint srcWidth, const GLfloat src[][4], GLint filterWidth, const GLfloat filter[][4], diff --git a/src/mesa/main/convolve.h b/src/mesa/main/convolve.h index 9d5e0eee43..99c1584fa8 100644 --- a/src/mesa/main/convolve.h +++ b/src/mesa/main/convolve.h @@ -1,4 +1,4 @@ -/* $Id: convolve.h,v 1.1 2000/08/21 14:24:31 brianp Exp $ */ +/* $Id: convolve.h,v 1.2 2000/08/23 14:31:25 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -33,6 +33,58 @@ extern void +_mesa_ConvolutionFilter1D(GLenum target, GLenum internalformat, GLsizei width, + GLenum format, GLenum type, const GLvoid *image); + +extern void +_mesa_ConvolutionFilter2D(GLenum target, GLenum internalformat, GLsizei width, + GLsizei height, GLenum format, GLenum type, + const GLvoid *image); + +extern void +_mesa_ConvolutionParameterf(GLenum target, GLenum pname, GLfloat params); + +extern void +_mesa_ConvolutionParameterfv(GLenum target, GLenum pname, + const GLfloat *params); + +extern void +_mesa_ConvolutionParameteri(GLenum target, GLenum pname, GLint params); + +extern void +_mesa_ConvolutionParameteriv(GLenum target, GLenum pname, const GLint *params); + +extern void +_mesa_CopyConvolutionFilter1D(GLenum target, GLenum internalformat, + GLint x, GLint y, GLsizei width); + +extern void +_mesa_CopyConvolutionFilter2D(GLenum target, GLenum internalformat, + GLint x, GLint y, GLsizei width, GLsizei height); + +extern void +_mesa_GetConvolutionFilter(GLenum target, GLenum format, GLenum type, + GLvoid *image); + +extern void +_mesa_GetConvolutionParameterfv(GLenum target, GLenum pname, GLfloat *params); + +extern void +_mesa_GetConvolutionParameteriv(GLenum target, GLenum pname, GLint *params); + +extern void +_mesa_GetSeparableFilter(GLenum target, GLenum format, GLenum type, + GLvoid *row, GLvoid *column, GLvoid *span); + +extern void +_mesa_SeparableFilter2D(GLenum target, GLenum internalformat, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + const GLvoid *row, const GLvoid *column); + + + +extern void _mesa_convolve_1d_image(const GLcontext *ctx, GLsizei *width, const GLfloat *srcImage, GLfloat *dstImage); |