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| trs:miscellany [2020/05/19 12:10] – [Object Texture Structure (TR4-5)] zdimension | trs:miscellany [2020/12/11 18:26] (current) – [Object Textures] typo stohrendorf |
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| ===== Palette ===== | ===== Palette ===== |
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| This consists of 256 [[trs:fundamentals#tr_colour|[tr_colour]]] structs, one for each palette entry. However, the individual colour values range from 0 to 63; they must be multiplied by 4 (or bitshifted by 2 to the left) to get the correct values. | This consists of 256 [[trs:fundamentals#tr_colour|[tr_colour]]] structs, one for each palette entry. However, the individual colour values range from 0 to 63; they must be multiplied by 4 (or bitshifted by 2 to the left) to get the correct values. Palette is used for all 8-bit colour, such as 8-bit textures. |
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| This used for all 8-bit colour, such as 8-bit textures. | {{:icons:tr1.png?nolink|TR1 only}} First entry in palette is treated as //transparent colour// used for textures with alpha testing. In later games, transparent colour was replaced by so-called "magenta transparency", meaning that any pixel with red and blue values at maximum and green value at zero, is treated as completely transparent. |
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| ===== Object Textures ===== | ===== Object Textures ===== |
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| An object texture (or //texture details// in TRLE terms) keeps detailed information about each texture independently used in the game. While it’s not a texture image itself (these are kept inside //texture atlases//), it’s rather a reference to a particular texture in an atlas atlas, kept with all other necessary information to display this texture. | An object texture (or //texture details// in TRLE terms) keeps detailed information about each texture independently used in the game. While it’s not a texture image itself (these are kept inside //texture atlases//), it’s rather a reference to a particular texture in an atlas, kept with all other necessary information to display this texture. |
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| ==== Object Texture Vertex Structure ==== | ==== Object Texture Vertex Structure ==== |
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| * //Bits 0..14// specify the //texture atlas// to use. On PC, the value should be between 0 and 63 (inclusive). | * //Bits 0..14// specify the //texture atlas// to use. On PC, the value should be between 0 and 63 (inclusive). |
| * //Bit 15//: {{:icons:tr3.png?nolink|TR3 only}}{{:icons:tr4.png?nolink|TR4 only}}{{:icons:tr5.png?nolink|TR5 only}} if set, it indicates that the texture is used on a triangle face. | * //Bit 15//: {{:icons:tr4.png?nolink|TR4 only}}{{:icons:tr5.png?nolink|TR5 only}} if set, it indicates that the texture is used on a triangle face. |
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| ''%%Attribute%%'' specifies transparency mode (i.e. //blending mode//) used for face with this texture applied. There are several ones available: | ''%%Attribute%%'' specifies transparency mode (i.e. //blending mode//) used for face with this texture applied. There are several ones available: |
| * ''%%EXPLOSION_FX%%'' — Plays //global// explosion sound (ID #105) and produce full-screen flash graphical FX (TR3-5) or camera shake effect (TR1-2). | * ''%%EXPLOSION_FX%%'' — Plays //global// explosion sound (ID #105) and produce full-screen flash graphical FX (TR3-5) or camera shake effect (TR1-2). |
| * ''%%FLOOD_FX%%'' — Plays //global// flooding sound (TR1 — ID #81, TR2 — ID #79, TR3 — ID #163, TR4 — ID #238). Implementation differs from version to version — in TR1 and TR2 looped waterfall sound is used (which is then stopped by an engine after 1 second), while in TR3 and TR4 one-shot sound is engaged. | * ''%%FLOOD_FX%%'' — Plays //global// flooding sound (TR1 — ID #81, TR2 — ID #79, TR3 — ID #163, TR4 — ID #238). Implementation differs from version to version — in TR1 and TR2 looped waterfall sound is used (which is then stopped by an engine after 1 second), while in TR3 and TR4 one-shot sound is engaged. |
| | * ''%%FOOTPRINT_FX%%'' — Plays random footprint sound effect, taking current block's **material index** into consideration. On PlayStation, also applies footprint sprite under left or right Lara foot (target foot is selected based on packed flag which is stored in animcommand argument — [[trs:mesh_construction_animation#animcommand-structure|look here]] for details). |
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