Unit CastleRenderContext
Description
Rendering context state.
Uses
- SysUtils
- Generics.Collections
- Classes
- CastleGL
- CastleUtils
- CastleVectors
- CastleRectangles
- CastleGLShaders
- CastleColors
- CastleRenderOptions
- CastleGLUtils
Overview
Classes, Interfaces, Objects and Records
| Name | Description |
|---|---|
Class TScissor |
Scissor to clip displayed things, in addition to the global scissor affected by TRenderContext.ScissorEnable / TRenderContext.ScissorDisable. |
Record TPolygonOffset |
|
Class TRenderContext |
The OpenGL / OpenGLES context state. |
Functions and Procedures
function PerspectiveProjection(const fovy, aspect, ZNear, ZFar: Single): TMatrix4; |
function OrthoProjection(const Dimensions: TFloatRectangle; const ZNear: Single = -1; const ZFar: Single = 1): TMatrix4; |
function FrustumProjection(const Dimensions: TFloatRectangle; const ZNear, ZFar: Single): TMatrix4; |
Types
TClearBuffer = (...); |
TClearBuffers = set of TClearBuffer; |
TDepthFunction = (...); |
TBufferTarget = (...); |
Constants
BufferTargetGL: array [TBufferTarget] of TGLenum = (
GL_ARRAY_BUFFER,
GL_ELEMENT_ARRAY_BUFFER
); |
Variables
RenderContext: TRenderContext; |
Description
Functions and Procedures
function PerspectiveProjection(const fovy, aspect, ZNear, ZFar: Single): TMatrix4; |
|
Calculate projection matrix, and set RenderContext.ProjectionMatrix to given value. For |
function OrthoProjection(const Dimensions: TFloatRectangle; const ZNear: Single = -1; const ZFar: Single = 1): TMatrix4; |
|
This item has no description. |
function FrustumProjection(const Dimensions: TFloatRectangle; const ZNear, ZFar: Single): TMatrix4; |
|
This item has no description. |
Types
TClearBuffer = (...); |
|
This item has no description. Values
|
TClearBuffers = set of TClearBuffer; |
|
This item has no description. |
TDepthFunction = (...); |
|
Possible values of TRenderContext.DepthFunc. Note: For now, the values of this enum correspond to OpenGL(ES) constants, but do not depend on this outside (and it may change in the future). Treat it like opaque enum. Values
|
TBufferTarget = (...); |
|
Target of bound buffer, see https://registry.khronos.org/OpenGL-Refpages/gl4/html/glBindBuffer.xhtml . Values
|
Constants
BufferTargetGL: array [TBufferTarget] of TGLenum = (
GL_ARRAY_BUFFER,
GL_ELEMENT_ARRAY_BUFFER
); |
|
This item has no description. |
Variables
RenderContext: TRenderContext; |
|
Current OpenGL / OpenGLES context state. Only access it during the rendering, i.e. in TCastleUserInterface.Render. TODO: In the future, this global singleton may be removed, and this may be accessible instead through a new TCastleUserInterface.Render parameter. |
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