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Set the texture scale and address mode when creating a texture

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Fixes https://github.com/libsdl-org/sdl2-compat/issues/506
This commit is contained in:
Sam Lantinga
2025-09-02 17:48:02 -07:00
parent d14cbd7b50
commit ef19c72015
2 changed files with 68 additions and 44 deletions
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93
src/render/opengl/SDL_render_gl.c
View File

@@ -442,6 +442,43 @@ static bool convert_format(Uint32 pixel_format, GLint *internalFormat, GLenum *f
return true;
}
static bool SetTextureScaleMode(GL_RenderData *data, GLenum textype, SDL_ScaleMode scaleMode)
{
switch (scaleMode) {
case SDL_SCALEMODE_NEAREST:
data->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
data->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
break;
case SDL_SCALEMODE_PIXELART: // Uses linear sampling
case SDL_SCALEMODE_LINEAR:
data->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
data->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
break;
default:
return SDL_SetError("Unknown texture scale mode: %d", scaleMode);
}
return true;
}
static GLint TranslateAddressMode(SDL_TextureAddressMode addressMode)
{
switch (addressMode) {
case SDL_TEXTURE_ADDRESS_CLAMP:
return GL_CLAMP_TO_EDGE;
case SDL_TEXTURE_ADDRESS_WRAP:
return GL_REPEAT;
default:
SDL_assert(!"Unknown texture address mode");
return GL_CLAMP_TO_EDGE;
}
}
static void SetTextureAddressMode(GL_RenderData *data, GLenum textype, SDL_TextureAddressMode addressModeU, SDL_TextureAddressMode addressModeV)
{
data->glTexParameteri(textype, GL_TEXTURE_WRAP_S, TranslateAddressMode(addressModeU));
data->glTexParameteri(textype, GL_TEXTURE_WRAP_T, TranslateAddressMode(addressModeV));
}
static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_PropertiesID create_props)
{
GL_RenderData *renderdata = (GL_RenderData *)renderer->internal;
@@ -538,11 +575,13 @@ static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
data->format = format;
data->formattype = type;
data->texture_scale_mode = SDL_SCALEMODE_INVALID;
data->texture_address_mode_u = SDL_TEXTURE_ADDRESS_INVALID;
data->texture_address_mode_v = SDL_TEXTURE_ADDRESS_INVALID;
data->texture_scale_mode = texture->scaleMode;
data->texture_address_mode_u = SDL_TEXTURE_ADDRESS_CLAMP;
data->texture_address_mode_v = SDL_TEXTURE_ADDRESS_CLAMP;
renderdata->glEnable(textype);
renderdata->glBindTexture(textype, data->texture);
SetTextureScaleMode(renderdata, textype, data->texture_scale_mode);
SetTextureAddressMode(renderdata, textype, data->texture_address_mode_u, data->texture_address_mode_v);
#ifdef SDL_PLATFORM_MACOS
#ifndef GL_TEXTURE_STORAGE_HINT_APPLE
#define GL_TEXTURE_STORAGE_HINT_APPLE 0x85BC
@@ -574,10 +613,11 @@ static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
renderdata->glTexImage2D(textype, 0, internalFormat, texture_w,
texture_h, 0, format, type, NULL);
}
renderdata->glDisable(textype);
if (!GL_CheckError("glTexImage2D()", renderer)) {
return false;
}
SetTextureScaleMode(renderdata, textype, data->texture_scale_mode);
SetTextureAddressMode(renderdata, textype, data->texture_address_mode_u, data->texture_address_mode_v);
#ifdef SDL_HAVE_YUV
if (texture->format == SDL_PIXELFORMAT_YV12 ||
@@ -600,11 +640,15 @@ static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
renderdata->glBindTexture(textype, data->utexture);
renderdata->glTexImage2D(textype, 0, internalFormat, (texture_w + 1) / 2,
(texture_h + 1) / 2, 0, format, type, NULL);
SetTextureScaleMode(renderdata, textype, data->texture_scale_mode);
SetTextureAddressMode(renderdata, textype, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_OPENGL_TEXTURE_U_NUMBER, data->utexture);
renderdata->glBindTexture(textype, data->vtexture);
renderdata->glTexImage2D(textype, 0, internalFormat, (texture_w + 1) / 2,
(texture_h + 1) / 2, 0, format, type, NULL);
SetTextureScaleMode(renderdata, textype, data->texture_scale_mode);
SetTextureAddressMode(renderdata, textype, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_OPENGL_TEXTURE_V_NUMBER, data->vtexture);
}
@@ -621,6 +665,8 @@ static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
renderdata->glBindTexture(textype, data->utexture);
renderdata->glTexImage2D(textype, 0, GL_LUMINANCE_ALPHA, (texture_w + 1) / 2,
(texture_h + 1) / 2, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, NULL);
SetTextureScaleMode(renderdata, textype, data->texture_scale_mode);
SetTextureAddressMode(renderdata, textype, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(props, SDL_PROP_TEXTURE_OPENGL_TEXTURE_UV_NUMBER, data->utexture);
}
#endif
@@ -660,6 +706,8 @@ static bool GL_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
}
#endif // SDL_HAVE_YUV
renderdata->glDisable(textype);
return GL_CheckError("", renderer);
}
@@ -1083,43 +1131,6 @@ static bool SetDrawState(GL_RenderData *data, const SDL_RenderCommand *cmd, cons
return true;
}
static bool SetTextureScaleMode(GL_RenderData *data, GLenum textype, SDL_ScaleMode scaleMode)
{
switch (scaleMode) {
case SDL_SCALEMODE_NEAREST:
data->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
data->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
break;
case SDL_SCALEMODE_PIXELART: // Uses linear sampling
case SDL_SCALEMODE_LINEAR:
data->glTexParameteri(textype, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
data->glTexParameteri(textype, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
break;
default:
return SDL_SetError("Unknown texture scale mode: %d", scaleMode);
}
return true;
}
static GLint TranslateAddressMode(SDL_TextureAddressMode addressMode)
{
switch (addressMode) {
case SDL_TEXTURE_ADDRESS_CLAMP:
return GL_CLAMP_TO_EDGE;
case SDL_TEXTURE_ADDRESS_WRAP:
return GL_REPEAT;
default:
SDL_assert(!"Unknown texture address mode");
return GL_CLAMP_TO_EDGE;
}
}
static void SetTextureAddressMode(GL_RenderData *data, GLenum textype, SDL_TextureAddressMode addressModeU, SDL_TextureAddressMode addressModeV)
{
data->glTexParameteri(textype, GL_TEXTURE_WRAP_S, TranslateAddressMode(addressModeU));
data->glTexParameteri(textype, GL_TEXTURE_WRAP_T, TranslateAddressMode(addressModeV));
}
static bool SetCopyState(GL_RenderData *data, const SDL_RenderCommand *cmd)
{
SDL_Texture *texture = cmd->data.draw.texture;

19
src/render/opengles2/SDL_render_gles2.c
View File

@@ -1658,9 +1658,9 @@ static bool GLES2_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SD
data->texture_u = 0;
data->texture_v = 0;
#endif
data->texture_scale_mode = SDL_SCALEMODE_INVALID;
data->texture_address_mode_u = SDL_TEXTURE_ADDRESS_INVALID;
data->texture_address_mode_v = SDL_TEXTURE_ADDRESS_INVALID;
data->texture_scale_mode = texture->scaleMode;
data->texture_address_mode_u = SDL_TEXTURE_ADDRESS_CLAMP;
data->texture_address_mode_v = SDL_TEXTURE_ADDRESS_CLAMP;
// Allocate a blob for image renderdata
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
@@ -1707,6 +1707,13 @@ static bool GLES2_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SD
renderdata->glActiveTexture(GL_TEXTURE2);
renderdata->glBindTexture(data->texture_type, data->texture_v);
renderdata->glTexImage2D(data->texture_type, 0, format, (texture->w + 1) / 2, (texture->h + 1) / 2, 0, format, type, NULL);
if (!GL_CheckError("glTexImage2D()", renderer)) {
SDL_free(data->pixel_data);
SDL_free(data);
return false;
}
SetTextureScaleMode(renderdata, data->texture_type, data->texture_scale_mode);
SetTextureAddressMode(renderdata, data->texture_type, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(SDL_GetTextureProperties(texture), SDL_PROP_TEXTURE_OPENGLES2_TEXTURE_V_NUMBER, data->texture_v);
data->texture_u = (GLuint)SDL_GetNumberProperty(create_props, SDL_PROP_TEXTURE_CREATE_OPENGLES2_TEXTURE_U_NUMBER, 0);
@@ -1728,6 +1735,8 @@ static bool GLES2_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SD
SDL_free(data);
return false;
}
SetTextureScaleMode(renderdata, data->texture_type, data->texture_scale_mode);
SetTextureAddressMode(renderdata, data->texture_type, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(SDL_GetTextureProperties(texture), SDL_PROP_TEXTURE_OPENGLES2_TEXTURE_U_NUMBER, data->texture_u);
if (!SDL_GetYCbCRtoRGBConversionMatrix(texture->colorspace, texture->w, texture->h, 8)) {
@@ -1755,6 +1764,8 @@ static bool GLES2_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SD
SDL_free(data);
return false;
}
SetTextureScaleMode(renderdata, data->texture_type, data->texture_scale_mode);
SetTextureAddressMode(renderdata, data->texture_type, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(SDL_GetTextureProperties(texture), SDL_PROP_TEXTURE_OPENGLES2_TEXTURE_UV_NUMBER, data->texture_u);
if (!SDL_GetYCbCRtoRGBConversionMatrix(texture->colorspace, texture->w, texture->h, 8)) {
@@ -1785,6 +1796,8 @@ static bool GLES2_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SD
return false;
}
}
SetTextureScaleMode(renderdata, data->texture_type, data->texture_scale_mode);
SetTextureAddressMode(renderdata, data->texture_type, data->texture_address_mode_u, data->texture_address_mode_v);
SDL_SetNumberProperty(SDL_GetTextureProperties(texture), SDL_PROP_TEXTURE_OPENGLES2_TEXTURE_NUMBER, data->texture);
SDL_SetNumberProperty(SDL_GetTextureProperties(texture), SDL_PROP_TEXTURE_OPENGLES2_TEXTURE_TARGET_NUMBER, data->texture_type);