D3DTEXTUREOP

Defines per-stage texture-blending operations.

typedef enum D3DTEXTUREOP
{
    D3DTOP_DISABLE = 1,
    D3DTOP_SELECTARG1 = 2,
    D3DTOP_SELECTARG2 = 3,
    D3DTOP_MODULATE = 4,
    D3DTOP_MODULATE2X = 5,
    D3DTOP_MODULATE4X = 6,
    D3DTOP_ADD = 7,
    D3DTOP_ADDSIGNED = 8,
    D3DTOP_ADDSIGNED2X = 9,
    D3DTOP_SUBTRACT = 10,
    D3DTOP_ADDSMOOTH = 11,
    D3DTOP_BLENDDIFFUSEALPHA = 12,
    D3DTOP_BLENDTEXTUREALPHA = 13,
    D3DTOP_BLENDFACTORALPHA = 14,
    D3DTOP_BLENDTEXTUREALPHAPM = 15,
    D3DTOP_BLENDCURRENTALPHA = 16,
    D3DTOP_PREMODULATE = 17,
    D3DTOP_MODULATEALPHA_ADDCOLOR = 18,
    D3DTOP_MODULATECOLOR_ADDALPHA = 19,
    D3DTOP_MODULATEINVALPHA_ADDCOLOR = 20,
    D3DTOP_MODULATEINVCOLOR_ADDALPHA = 21,
    D3DTOP_BUMPENVMAP = 22,
    D3DTOP_BUMPENVMAPLUMINANCE = 23,
    D3DTOP_DOTPRODUCT3 = 24,
    D3DTOP_MULTIPLYADD = 25,
    D3DTOP_LERP = 26,
    D3DTOP_FORCE_DWORD = 0x7fffffff,
} D3DTEXTUREOP, *LPD3DTEXTUREOP;

Constants

D3DTOP_DISABLE: Disables output from this texture stage and all stages with a higher index. To disable texture mapping, set this as the color operation for the first texture stage (stage 0). Alpha operations cannot be disabled when color operations are enabled. Setting the alpha operation to D3DTOP_DISABLE when color blending is enabled causes undefined behavior.
D3DTOP_SELECTARG1: Use this texture stage's first color or alpha argument, unmodified, as the output. This operation affects the color argument when used with the D3DTSS_COLOROP texture-stage state, and the alpha argument when used with D3DTSS_ALPHAOP.
D3DTOP_SELECTARG2: Use this texture stage's second color or alpha argument, unmodified, as the output. This operation affects the color argument when used with the D3DTSS_COLOROP texture stage state, and the alpha argument when used with D3DTSS_ALPHAOP.
D3DTOP_MODULATE: Multiply the components of the arguments.
D3DTOP_MODULATE2X: Multiply the components of the arguments, and shift the products to the left 1 bit (effectively multiplying them by 2) for brightening.
D3DTOP_MODULATE4X: Multiply the components of the arguments, and shift the products to the left 2 bits (effectively multiplying them by 4) for brightening.
D3DTOP_ADD: Add the components of the arguments.
D3DTOP_ADDSIGNED: Add the components of the arguments with a - 0.5 bias, making the effective range of values from - 0.5 through 0.5.
D3DTOP_ADDSIGNED2X: Add the components of the arguments with a - 0.5 bias, and shift the products to the left 1 bit.
D3DTOP_SUBTRACT: Subtract the components of the second argument from those of the first argument.
D3DTOP_ADDSMOOTH: Add the first and second arguments; then subtract their product from the sum.
D3DTOP_BLENDDIFFUSEALPHA: Linearly blend this texture stage, using the interpolated alpha from each vertex.
D3DTOP_BLENDTEXTUREALPHA: Linearly blend this texture stage, using the alpha from this stage's texture.
D3DTOP_BLENDFACTORALPHA: Linearly blend this texture stage, using a scalar alpha set with the D3DRS_TEXTUREFACTOR render state.
D3DTOP_BLENDTEXTUREALPHAPM: Linearly blend a texture stage that uses a premultiplied alpha.
D3DTOP_BLENDCURRENTALPHA: Linearly blend this texture stage, using the alpha taken from the previous texture stage.
D3DTOP_PREMODULATE: D3DTOP_PREMODULATE is set in stage n. The output of stage n is arg1. Additionally, if there is a texture in stage n + 1, any D3DTA_CURRENT in stage n + 1 is premultiplied by texture in stage n + 1.
D3DTOP_MODULATEALPHA_ADDCOLOR: Modulate the color of the second argument, using the alpha of the first argument; then add the result to argument one. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_MODULATECOLOR_ADDALPHA: Modulate the arguments; then add the alpha of the first argument. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_MODULATEINVALPHA_ADDCOLOR: Similar to D3DTOP_MODULATEALPHA_ADDCOLOR, but use the inverse of the alpha of the first argument. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_MODULATEINVCOLOR_ADDALPHA: Similar to D3DTOP_MODULATECOLOR_ADDALPHA, but use the inverse of the color of the first argument. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_BUMPENVMAP: Perform per-pixel bump mapping, using the environment map in the next texture stage, without luminance. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_BUMPENVMAPLUMINANCE: Perform per-pixel bump mapping, using the environment map in the next texture stage, with luminance. This operation is supported only for color operations (D3DTSS_COLOROP).
D3DTOP_DOTPRODUCT3: Modulate the components of each argument as signed components, add their products; then replicate the sum to all color channels, including alpha. This operation is supported for color and alpha operations.
D3DTOP_MULTIPLYADD: Performs a multiply-accumulate operation. It takes the last two arguments, multiplies them together, and adds them to the remaining input/source argument, and places that into the result.
D3DTOP_LERP: Linearly interpolates between the second and third source arguments by a proportion specified in the first source argument.
D3DTOP_FORCE_DWORD: Forces this enumeration to compile to 32 bits in size. Without this value, some compilers would allow this enumeration to compile to a size other than 32 bits. This value is not used.

Remarks

The members of this type are used when setting color or alpha operations by using the D3DTSS_COLOROP or D3DTSS_ALPHAOP values with the IDirect3DDevice9::SetTextureStageState method.

In the above formulas, S_RGBA is the RGBA color produced by a texture operation, and Arg1, Arg2, and Arg3 represent the complete RGBA color of the texture arguments. Individual components of an argument are shown with subscripts. For example, the alpha component for argument 1 would be shown as Arg1_A.

D3DTEXTUREOP

Constants

Remarks

See Also