142 lines
4.7 KiB
Go
142 lines
4.7 KiB
Go
package rl
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const (
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// Texture parameters (equivalent to OpenGL defines)
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TextureWrapS = 0x2802 // GL_TEXTURE_WRAP_S
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TextureWrapT = 0x2803 // GL_TEXTURE_WRAP_T
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TextureMagFilter = 0x2800 // GL_TEXTURE_MAG_FILTER
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TextureMinFilter = 0x2801 // GL_TEXTURE_MIN_FILTER
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TextureFilterNearest = 0x2600 // GL_NEAREST
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TextureFilterLinear = 0x2601 // GL_LINEAR
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TextureFilterMipNearest = 0x2700 // GL_NEAREST_MIPMAP_NEAREST
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TextureFilterNearestMipLinear = 0x2702 // GL_NEAREST_MIPMAP_LINEAR
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TextureFilterLinearMipNearest = 0x2701 // GL_LINEAR_MIPMAP_NEAREST
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TextureFilterMipLinear = 0x2703 // GL_LINEAR_MIPMAP_LINEAR
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TextureFilterAnisotropic = 0x3000 // Anisotropic filter (custom identifier)
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TextureMipmapBiasRatio = 0x4000 // Texture mipmap bias, percentage ratio (custom identifier)
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TextureWrapRepeat = 0x2901 // GL_REPEAT
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TextureWrapClamp = 0x812F // GL_CLAMP_TO_EDGE
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TextureWrapMirrorRepeat = 0x8370 // GL_MIRRORED_REPEAT
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TextureWrapMirrorClamp = 0x8742 // GL_MIRROR_CLAMP_EXT
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// Matrix modes (equivalent to OpenGL)
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Modelview = 0x1700 // GL_MODELVIEW
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Projection = 0x1701 // GL_PROJECTION
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Texture = 0x1702 // GL_TEXTURE
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// Primitive assembly draw modes
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Lines = 0x0001 // GL_LINES
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Triangles = 0x0004 // GL_TRIANGLES
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Quads = 0x0007 // GL_QUADS
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// GL equivalent data types
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UnsignedByte = 0x1401 // GL_UNSIGNED_BYTE
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Float = 0x1406 // GL_FLOAT
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// Buffer usage hint
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StreamDraw = 0x88E0 // GL_STREAM_DRAW
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StreamRead = 0x88E1 // GL_STREAM_READ
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StreamCopy = 0x88E2 // GL_STREAM_COPY
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StaticDraw = 0x88E4 // GL_STATIC_DRAW
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StaticRead = 0x88E5 // GL_STATIC_READ
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StaticCopy = 0x88E6 // GL_STATIC_COPY
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DynamicDraw = 0x88E8 // GL_DYNAMIC_DRAW
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DynamicRead = 0x88E9 // GL_DYNAMIC_READ
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DynamicCopy = 0x88EA // GL_DYNAMIC_COPY
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// GL Shader type
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FragmentShader = 0x8B30 // GL_FRAGMENT_SHADER
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VertexShader = 0x8B31 // GL_VERTEX_SHADER
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ComputeShader = 0x91B9 // GL_COMPUTE_SHADER
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)
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// VertexBuffer - Dynamic vertex buffers (position + texcoords + colors + indices arrays)
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type VertexBuffer struct {
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ElementCount int32 // Number of elements in the buffer (QUADS)
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Vertices *float32 // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
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Texcoords *float32 // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
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Normals *float32 // Vertex normal (XYZ - 3 components per vertex) (shader-location = 2)
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Colors *uint8 // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
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Indices *uint32 // Vertex indices (in case vertex data comes indexed) (6 indices per quad)
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VaoId uint32 // OpenGL Vertex Array Object id
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VboId [5]uint32 // OpenGL Vertex Buffer Objects id (5 types of vertex data)
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}
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// DrawCall - Draw call type
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// NOTE: Only texture changes register a new draw, other state-change-related elements are not
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// used at this moment (vaoId, shaderId, matrices), raylib just forces a batch draw call if any
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// of those state-change happens (this is done in core module)
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type DrawCall struct {
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Mode int32
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VertexCount int32
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VertexAlignment int32
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TextureId uint32
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}
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// RenderBatch type
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type RenderBatch struct {
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BufferCount int32
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CurrentBuffer int32
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VertexBuffer *VertexBuffer
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Draws *DrawCall
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DrawCounter int32
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DurrentDepth float32
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}
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// OpenGL version
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const (
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Opengl11 int32 = 1
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Opengl21 int32 = 2
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Opengl33 int32 = 3
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Opengl43 int32 = 4
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OpenglEs20 int32 = 5
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)
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// GlVersion type
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type GlVersion = int32
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// Shader attribute data types
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const (
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ShaderAttribFloat int32 = 0
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ShaderAttribVec2 int32 = 1
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ShaderAttribVec3 int32 = 2
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ShaderAttribVec4 int32 = 3
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)
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// ShaderAttributeDataType type
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type ShaderAttributeDataType = int32
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// Framebuffer attachment type
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// NOTE: By default up to 8 color channels defined but it can be more
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const (
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AttachmentColorChannel0 int32 = 0
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AttachmentColorChannel1 int32 = 1
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AttachmentColorChannel2 int32 = 2
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AttachmentColorChannel3 int32 = 3
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AttachmentColorChannel4 int32 = 4
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AttachmentColorChannel5 int32 = 5
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AttachmentColorChannel6 int32 = 6
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AttachmentColorChannel7 int32 = 7
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AttachmentDepth int32 = 100
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AttachmentStencil int32 = 200
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)
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// FramebufferAttachType type
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type FramebufferAttachType = int32
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// Framebuffer texture attachment type
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const (
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AttachmentCubemapPositiveX int32 = 0
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AttachmentCubemapNegativeX int32 = 1
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AttachmentCubemapPositiveY int32 = 2
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AttachmentCubemapNegativeY int32 = 3
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AttachmentCubemapPositiveZ int32 = 4
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AttachmentCubemapNegativeZ int32 = 5
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AttachmentTexture2d int32 = 100
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AttachmentRenderbuffer int32 = 200
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)
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// FramebufferAttachTextureType type
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type FramebufferAttachTextureType = int32
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